CN102939963A - Weeding microcapsule - Google Patents
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- CN102939963A CN102939963A CN2012104782827A CN201210478282A CN102939963A CN 102939963 A CN102939963 A CN 102939963A CN 2012104782827 A CN2012104782827 A CN 2012104782827A CN 201210478282 A CN201210478282 A CN 201210478282A CN 102939963 A CN102939963 A CN 102939963A
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Abstract
The invention relates to the pesticide field, in particular to a pesticide weeding microcapsule and a preparing method thereof, and aims at improving use efficiency of bispyribac-sodium pesticides and prolonging pesticide effect durability of bispyribac-sodium pesticides by using the slow-release release technology of the microcapsule. The technical scheme is that a bispyribac-sodium microcapsule suspending agent contains components according to weight percent: 10-30% of bispyribac-sodium, 0.1-2% of wetting agents, 1-8% of dispersing agents, 0.1-5% of capsule wall materials, 0.1-4% of binding agents, 1-5% of antifreezing agents and the balance being water. The bispyribac-sodium water suspension concentrate is good in weeding effect and long in lasting period in the use process and is small in environment pollution, simple to package, convenient to store and transport and safe to field crops.
Description
Technical field
The present invention relates to pesticide field, particularly a kind of agricultural chemicals weeding microcapsule formulations and preparation method thereof.
Background technology
Two careless ethers are a kind of herbicides for use in paddy, and barnyard grass and Paspalum distichum (red mix root grass, Entada phaseoloides) are had special efficacy, the barnyard grass that can be used for preventing and kill off above the average age for marriage barnyard grass and other weed killer herbicide is produced resistance.The former medicine outward appearance of two careless ethers is white powder, 223 ~ 224 ℃ of fusing points, vapour pressure 5.05*10^ (9) Pa (25), unit weight 0.0737 (20 ℃), solvability: water 73.3g/L (25 ℃), methyl alcohol 26.3g/L, acetone 0.043g/L (25 ℃).Two careless ethers are effectively prevented and kill off barnyard grass in paddy field and other grassy weeds, the double barnyard grass of controlling most of broad leaved weeds, some sedge weeds and other weed killer herbicide being produced resistance.As: barnyard grass, Paspalum distichum, rice Li Shi standing grain, lady's-grass, agrostis stolonifera, amur foxtail, northeast Tian Mao, wolf tail grass, special-shaped nutgrass flatsedge, sunshine wooden dipper stroke the common most weeds of paddy field such as grass, cyperus iria, firefly Lin, Japanese grass, flat stalk grass, Monochoria vaginalis, Monochoria korsakowii, wild arrowhead, rhizoma alismatis, pondweed, pipewort, needle spikesedge herb, mexicana, Procumbent Falsepimpernel, triquetrousc murdannia herb, alternanthera philoxeroides, flower Lin.Two careless ethers all can use before heading after direct seading rice is emerged, and in barnyard grass 3-5 leaf phase dispenser, effect is best.
At present mainly take wetting powder and aqueous suspension agent as main, the registration of wetting powder and aqueous suspension agent is take 10%, 40% aqueous suspension agent, 20% wetting powder as main for the formulation used as weed killer herbicide of two careless ethers.Two kinds of preparation types all can't prolong the drug effect phase, may cause the secondary dispenser of paddy field, cause unnecessary dispenser cost and the increase of cost of labor to the peasant.
Summary of the invention
In view of this, the invention provides a kind of weeding microcapsule formulations.Two careless ethers in this weeding microcapsule formulations, 10%～30%; Wetting agent, 0.1%～2%; Dispersant, 1%～8%; Capsule ability 0.1%～5%; Binding agent, 0.1%～4%, antifreezing agent 1%～5%, water complements to 100%.Compare with two careless ether wetting powders, aqueous suspension agent, have that herbicidal effect is good, the lasting period is long, environmental pollution is little, packing is simple, and accumulating is convenient, to field crops safety.
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
A kind of weeding microcapsule formulations, two careless ethers, 10%～30%; Wetting agent, 0.1%～2%; Dispersant, 1%～8%; Capsule, 0.1%～5%; Binding agent, 0.1%～4%, antifreezing agent 1%～5%, water complements to 100%.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention, the mass ratio of two careless ethers, wetting agent, dispersant, capsule material and water is 1～20:0.1～2:1～8:0.1～5:20～85.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention, the mass ratio of two careless ethers, wetting agent, dispersant, capsule material and water is 1～30:0.1～2:1～8:0.1～5:20～85.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention also comprises antifreezing agent.
Preferably, a kind of Herbicidal suspoemulsion provided by the invention in mass fraction, also comprises 5% antifreezing agent.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention also comprises thickener.
Preferably, a kind of Herbicidal suspoemulsion provided by the invention in mass fraction, also comprises 0.1% thickener.
The invention provides a kind of weeding microcapsule formulations.Two careless ethers in this weeding microcapsule formulations, 10%～30%; Wetting agent, 0.1%～2%; Dispersant, 1%～8%; Capsule ability 0.1%～5%; Binding agent, 0.1%～4%, antifreezing agent 1%～5%, water complements to 100%.
Result of the test shows, behind the dispenser 15d, containing 10% pair of careless ether microcapsule formulations is 63.1% to the preventive effect of barnyard grass, compares with wetting powder, has improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 20% pair of careless ether microcapsule formulations is 66.1% to the preventive effect of barnyard grass, compares with wetting powder, has improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 30% pair of careless ether microcapsule formulations is 70.1% to the preventive effect of barnyard grass, compares with wetting powder, missible oil, has improved the preventive effect to weeds, all has utmost point significant difference (P＜0.01).
Behind the dispenser 15d, containing 10% pair of careless ether microcapsule formulations is 65.6% to the preventive effect of mexicana, compares with wetting powder, has improved the preventive effect to weeds, and significant difference (P＜0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 20% pair of careless ether microcapsule formulations is 71.5% to the preventive effect of mexicana, compares with wetting powder, has improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 30% pair of careless ether microcapsule formulations is 75.5% to the preventive effect of mexicana, compares with wetting powder, and significant difference (P＜0.05) is compared with aqueous suspension agent, has improved the preventive effect to weeds, has utmost point significant difference (P＜0.01)
Behind the dispenser 30d, contain respectively 10%, 20%, 25%, 30% pair of careless ether microcapsule formulations the preventive effect of barnyard grass, mexicana is 100%, compare with aqueous suspension agent with wetting powder, preventive effect, fresh weight preventive effect, comprehensive fresh weight preventive effect to weeds have all been improved, have utmost point significant difference (P＜0.01), the lasting period obviously is longer than the contrast medicament.
Comprehensive above-mentioned result of the test, two careless ether microcapsule formulations provided by the invention, compare with aqueous suspension agent with two careless ether wetting powders, preventive effect, fresh weight preventive effect, comprehensive fresh weight preventive effect to weeds in field have all been improved, to field crops safety, lasting period is long, and a drug paddy rice endangers without weeds whole breeding time.
Embodiment
The invention discloses a kind of Herbicidal suspoemulsion, those skilled in the art can use for reference this paper content, suitably improve technological parameter and realize.Special needs to be pointed out is that all similarly replace and change apparent to those skilled in the art, they all are deemed to be included in the present invention.Method of the present invention and application are described by preferred embodiment, the related personnel obviously can change or suitably change and combination methods and applications as herein described within not breaking away from content of the present invention, spirit and scope, realizes and use the technology of the present invention.
The invention provides a kind of weeding microcapsule formulations.Two careless ethers in this weeding microcapsule formulations, 10%～30%; Wetting agent, 0.1%～2%; Dispersant, 1%～8%; Capsule ability 0.1%～5%; Binding agent, 0.1%～4%, water complements to 100%.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention, the mass ratio of two careless ethers, wetting agent, dispersant, capsule material and water is 1～20:0.1～2:1～8:0.1-5:20～85.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention, the mass ratio of two careless ethers, wetting agent, dispersant, capsule material and water is 1～30:0.1～2:1～8:0.1-5:20～85.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention also comprises antifreezing agent.
Preferably, a kind of Herbicidal suspoemulsion provided by the invention in mass fraction, also comprises 5% antifreezing agent.
As preferably, a kind of Herbicidal suspoemulsion provided by the invention also comprises thickener.
Preferably, a kind of Herbicidal suspoemulsion provided by the invention in mass fraction, also comprises 0.1% thickener.
A kind of weeding microcapsule formulations, two careless ethers in this weeding microcapsule formulations, 10%～30%; Wetting agent, 0.1%～2%; Dispersant, 1%～8%; Capsule ability 0.1%～5%; Binding agent, 0.1%～4%, antifreezing agent 1%～5%, water complements to 100%.
Result of the test shows, behind the dispenser 15d, containing 10% pair of careless ether microcapsule formulations is 63.1% to the preventive effect of barnyard grass, compares with wetting powder, has improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 20% pair of careless ether microcapsule formulations is 66.1% to the preventive effect of barnyard grass, compares with wetting powder, has improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 30% pair of careless ether microcapsule formulations is 70.1% to the preventive effect of barnyard grass, compares with wetting powder, missible oil, has improved the preventive effect to weeds, all has utmost point significant difference (P＜0.01).
Behind the dispenser 15d, containing 10% pair of careless ether microcapsule formulations is 65.6% to the preventive effect of mexicana, compares with wetting powder, has improved the preventive effect to weeds, and significant difference (P＜0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 20% pair of careless ether microcapsule formulations is 71.5% to the preventive effect of mexicana, compares with wetting powder, has improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); Containing 30% pair of careless ether microcapsule formulations is 75.5% to the preventive effect of mexicana, compares with wetting powder, and significant difference (P＜0.05) is compared with aqueous suspension agent, has improved the preventive effect to weeds, has utmost point significant difference (P＜0.01)
Behind the dispenser 30d, contain respectively 10%, 20%, 30% pair of careless ether microcapsule formulations the preventive effect of barnyard grass, mexicana is 100%, compare with missible oil with wetting powder, preventive effect, fresh weight preventive effect, comprehensive fresh weight preventive effect to weeds have all been improved, have utmost point significant difference (P＜0.01), the lasting period obviously is longer than the contrast medicament.
Comprehensive above-mentioned result of the test, two careless ether microcapsule formulations provided by the invention, compare with aqueous suspension agent with two careless ether wetting powders, preventive effect, fresh weight preventive effect, comprehensive fresh weight preventive effect to weeds in field have all been improved, to field crops safety, lasting period is long, and a drug paddy rice endangers without weeds whole breeding time.
Below in conjunction with embodiment, further set forth the present invention:
Embodiment 1 preparation weeding microcapsule formulations provided by the invention
Weigh two careless ether 10 kg, wetting agent polyoxyethylene nonylphenol ether 1 kg, dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, water 70.9L, after mixing sand milling, add capsule material Lauxite 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 2 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 20 kg, wetting agent polyoxyethylene nonylphenol ether 1 kg, dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, water 60.9L, after mixing sand milling, add capsule material Lauxite 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 3 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 30 kg, wetting agent polyoxyethylene nonylphenol ether 1 kg, dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, water 50.9L, after mixing sand milling, add capsule material Lauxite 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 4 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 10 kg, wetting agent polyoxyethylene nonylphenol ether 1 kg, dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, water 70.9L, after mixing sand milling, add capsule material melamino-formaldehyde 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 5 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 20 kg, wetting agent polyoxyethylene nonylphenol ether 1 kg, dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, water 60.9L, after mixing sand milling, add capsule material melamino-formaldehyde 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 6 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 30 kg, wetting agent polyoxyethylene nonylphenol ether 1 kg, dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, water 50.9L, after mixing sand milling, add capsule material melamino-formaldehyde 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant naphthalenesulfonate formaldehyde condensation compound 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 7 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 10 kg, wetting agent lauryl sodium sulfate 1 kg, dispersant alkylphenol-polyethenoxy base ether 4 kg, water 70.9L, after mixing sand milling, add capsule material Lauxite 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant alkylphenol-polyethenoxy base ether 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 8 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 20 kg, wetting agent lauryl sodium sulfate 1 kg, dispersant alkylphenol-polyethenoxy base ether 4 kg, water 60.9L, after mixing sand milling, add capsule material Lauxite 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant alkylphenol-polyethenoxy base ether 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
Embodiment 9 preparations weeding microcapsule formulations provided by the invention
Weigh two careless ether 25kg, wetting agent lauryl sodium sulfate 1 kg, dispersant alkylphenol-polyethenoxy base ether 4 kg, water 55.9L, after mixing sand milling, add capsule material Lauxite 5 kg, regulate pH value and behind 3-4, add hot reflux after 1 hour, regulate pH value and to 6-7, add dispersant alkylphenol-polyethenoxy base ether 4 kg, binding agent 0.1kg, antifreezing agent 5kg makes the weeding microcapsule formulations after continuing to stir half an hour.
The two careless ether microcapsule formulations of the embodiment 10 bolts provided by the invention field trial of cutting weeds
The dispenser place: rice test field, Baojing village, Shucheng County, Anhui Province Hang Bu town, front stubble is wheat paddock.Fertility uniformity experimental field, physical features is smooth.The inclined to one side grittiness of soil, middle fertility, humidity is moderate.Sowing no-tillage and direct-seeding paddy rice (Taihu Lake is glutinous), the paddy field annual weed is mainly barnyard grass and mexicana, 3～5 leaf phases, is evenly distributed.
Spraying time: in 3～4 leaf phases of paddy rice, the concrete time is dispenser in afternoon on July 4 in 2012.
The dispenser condition: dispenser was fine the same day, 27 ℃～34 ℃ of temperature.
Dispenser dosage and mode: spraying volume 20ml/667m
2, liquid adopts the dilution method preparation of two steps.Medical instruments adopt workers and peasants-16 knapsack sprayer, dress fan type shower nozzle, artificial even spraying.
Experimental group: be divided into microcapsule formulations experimental group, wetting powder experimental group and aqueous suspension agent experimental group; Wherein, in the microcapsule formulations experimental group according to 20ml/667m
2Dosage spray the 20% pair of careless ether microcapsule formulations that contains that makes in the embodiment of the invention 2, the wetting powder experimental group is according to 20g/667m
2Dosage spray and to contain 20% pair of careless ether wetting powder (commercially available), the aqueous suspension agent experimental group is according to 10ml/667m
2Dosage spray and to contain 40% pair of careless ether aqueous suspension agent (commercially available).
Blank group: according to 20ml/667m
2Dosage spray clear water.
Test method: each experimental group and blank group all repeat 4 times, and each experimental group and blank group take respectively residential quarter, experimental field area 35m
2, the residential quarter randomized arrangement.Before the dispenser, in the residential quarter of each experimental group and blank group, get at random 4 points, weeds radix (strain/m before the record dispenser
2); Behind dispenser 15d, the 30d, record respectively according to the method described above weeds survival strain number (strain/m in each experimental group and the blank group residential quarter
2), calculate weeds preventive effects (%); Behind the dispenser 30d, extract weeds and take by weighing fresh weight (g/m
2), calculate fresh weight preventive effect (%).
Weeds strain number * 100 before preventive effect (%)=(weeds strain number behind weeds strain number before the treatment region medicine-treatment region medicine)/treatment region medicine.
Fresh weight preventive effect (%)=(check plot weeds fresh weight-treatment region weeds fresh weight)/check plot weeds fresh weight * 100.
The herbicidal effect of each experimental group sees Table 1.
As shown in Table 1, behind the dispenser 15d, containing 20% pair of careless ether wetting powder is 62.0% to the preventive effect of barnyard grass, containing 40% pair of careless ether aqueous suspension agent is 50.0% to the preventive effect of barnyard grass, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 66.1% to the preventive effect of barnyard grass, compare with wetting powder, improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with missible oil, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01).
Behind the dispenser 30d, containing 20% pair of careless ether wetting powder is 92.0% to the preventive effect of barnyard grass, containing 20% pair of careless ether aqueous suspension agent is 91.4% to the preventive effect of barnyard grass, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 100% to the preventive effect of barnyard grass, compare with aqueous suspension agent with wetting powder, improve the preventive effect to weeds, had utmost point significant difference (P＜0.01).
Dispenser 30d extracts weighing fresh weight behind the weeds, containing 20% pair of careless ether wetting powder is 93.4% to the fresh weight preventive effect of barnyard grass, containing 20% pair of careless ether aqueous suspension agent is 93.8% to the fresh weight preventive effect of barnyard grass, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 100% to the fresh weight preventive effect of barnyard grass, compare with aqueous suspension agent with wetting powder, improve the fresh weight preventive effect to weeds, had utmost point significant difference (P＜0.01).
Behind the dispenser 15d, containing 20% pair of careless ether wetting powder is 65.4% to the preventive effect of mexicana, containing 20% pair of careless ether aqueous suspension agent is 57.9% to the preventive effect of mexicana, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 71.5% to the preventive effect of mexicana, compare with wetting powder, improved the preventive effect to weeds, and significant difference (P＜0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01).
Behind the dispenser 30d, containing 20% pair of careless ether wetting powder is 96.2% to the preventive effect of mexicana, containing 20% pair of careless ether aqueous suspension agent is 94.7% to the preventive effect of mexicana, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 100% to the preventive effect of mexicana, compare with aqueous suspension agent with wetting powder, improve the preventive effect to weeds, had utmost point significant difference (P＜0.01).
Dispenser 30d extracts weighing fresh weight behind the weeds, containing 20% pair of careless ether wetting powder is 92.6% to the fresh weight preventive effect of mexicana, containing 20% pair of careless ether aqueous suspension agent is 91.8% to the fresh weight preventive effect of mexicana, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 100% to the fresh weight preventive effect of mexicana, compare with aqueous suspension agent with wetting powder, improve the fresh weight preventive effect to weeds, had utmost point significant difference (P＜0.01).
Dispenser 30d extracts weighing fresh weight behind the weeds, and containing 20% pair of careless ether wetting powder is 93.0% to the comprehensive fresh weight preventive effect of barnyard grass and mexicana, and containing 20% pair of careless ether aqueous suspension agent is 92.8% to the comprehensive fresh weight preventive effect of barnyard grass and mexicana; The embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 100% to the comprehensive fresh weight preventive effect of barnyard grass and mexicana, compares with aqueous suspension agent with wetting powder, improved the comprehensive fresh weight preventive effect to weeds, has utmost point significant difference (P＜0.01).
Behind the dispenser 30d, each experimental group all has no adverse effects to the heading of paddy rice early growth and later stage, and with the difference of blank group not significantly (P＞0.05), therefore, what the embodiment of the invention 2 made contains 20% pair of careless ether microcapsule formulations to rice safety.
Comprehensive above-mentioned result of the test shows that two careless ether microcapsule formulations are compared with two careless ether wetting powders, aqueous suspension agent, and the preventive effect of weeds in field, fresh weight preventive effect, comprehensive fresh weight preventive effect are improved, and to field crops safety, and the lasting period is long.
The dispenser place: direct seading rice field, Feixi County Feng Le town, front stubble is Rapeseed Field.Fertility uniformity experimental field, physical features is smooth.The inclined to one side grittiness of soil, middle fertility, humidity is moderate.Sowing direct seading rice (military fortune round-grained rice 23), wheat paddock is given birth to broadleaf weed one year, is mainly clearvers and chickweed, 3～5 leaf phases, is evenly distributed.
Spraying time: in 3～4 leaf phases of wheat, the concrete time is dispenser in afternoon on July 6 in 2010.
The dispenser condition: dispenser was fine the same day, 27 ℃～32 ℃ of temperature.
Dispenser dosage and mode: spraying volume 20ml/667m
2, liquid adopts the dilution method preparation of two steps.Medical instruments adopt workers and peasants-16 knapsack sprayer, dress fan type shower nozzle, artificial even spraying.
Experimental group: contain the two careless ether microcapsule formulations of variable concentrations, be 20ml/667 m so that be sprayed at the content of the final active ingredient in field
2
Blank group: according to 20ml/667 m
2Dosage spray clear water.
Test method: each experimental group and blank group all repeat 4 times, and each experimental group and blank group take respectively residential quarter, experimental field area 30m
2, the residential quarter randomized arrangement.Before the dispenser, in the residential quarter of each experimental group and blank group, get at random 4 points, weeds radix (strain/m before the record dispenser
2); Behind dispenser 15d, the 30d, record respectively according to the method described above weeds survival strain number (strain/m in each experimental group and the blank group residential quarter
2), calculate weeds preventive effects (%); Behind the dispenser 30d, extract weeds and take by weighing fresh weight (g/m
2), calculate fresh weight preventive effect (%).
Weeds strain number * 100 before preventive effect (%)=(weeds strain number behind weeds strain number before the treatment region medicine-treatment region medicine)/treatment region medicine.
Fresh weight preventive effect (%)=(check plot weeds fresh weight-treatment region weeds fresh weight)/check plot weeds * 100.
The two careless ether microcapsule formulations herbicidal effects of variable concentrations see Table 2.
Behind the dispenser 30d, the two careless ether microcapsule formulations that the embodiment of the invention 1,3,9 makes is 100% to the preventive effect of barnyard grass, compares with aqueous suspension agent with wetting powder, has all improved the preventive effect to weeds, has utmost point significant difference (P＜0.01).
Dispenser 30d extracts weighing fresh weight behind the weeds, the two careless ether microcapsule formulations that the embodiment of the invention 1,3,9 makes is 100% to the fresh weight preventive effect of barnyard grass, compare with aqueous suspension agent with wetting powder, improved the fresh weight preventive effect to weeds, have utmost point significant difference (P＜0.01).
Behind the dispenser 15d, the embodiment of the invention 2 makes, and to contain 20% pair of careless ether microcapsule formulations be 71.5% to the preventive effect of mexicana, compares with wetting powder, improved the preventive effect to weeds, significant difference (P＜0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); The embodiment of the invention 9 makes, and to contain 25% pair of careless ether microcapsule formulations be 65.2% to the preventive effect of mexicana, compares with wetting powder, improved the preventive effect to weeds, but difference not significantly (P＞0.05); Compare with aqueous suspension agent, improved the preventive effect to weeds, have utmost point significant difference (P＜0.01); The embodiment of the invention 3 makes, and to contain 30% pair of careless ether microcapsule formulations be 68.1% to the preventive effect of mexicana, compare with wetting powder, significant difference (P＜0.05) is compared with aqueous suspension agent, improve the preventive effect to weeds, had utmost point significant difference (P＜0.01); The embodiment of the invention 1 makes, and to contain 10% pair of careless ether microcapsule formulations be 66.7% to the preventive effect of mexicana, compares with wetting powder, aqueous suspension agent, improved the preventive effect to weeds, all has significant difference (P＜0.01).
Behind the dispenser 30d, the two careless ether microcapsule formulations that the embodiment of the invention 1,3,9 makes is 100% to the preventive effect of mexicana, compares with aqueous suspension agent with wetting powder, has all improved the preventive effect to weeds, has utmost point significant difference (P＜0.01).
Dispenser 30d extracts weighing fresh weight behind the weeds, the two careless ether microcapsule formulations that the embodiment of the invention 1,3,9 makes is 100% to the fresh weight preventive effect of mexicana, compare with aqueous suspension agent with wetting powder, all improved the fresh weight preventive effect to weeds, have utmost point significant difference (P＜0.01).
Dispenser 30d extracts weighing fresh weight behind the weeds, the two careless ether microcapsule formulations that the embodiment of the invention 1,2,3,9 makes is 100% to the comprehensive fresh weight preventive effect of barnyard grass and mexicana, compare with aqueous suspension agent with wetting powder, improve the comprehensive fresh weight preventive effect to weeds, had utmost point significant difference (P＜0.01).
Behind the dispenser 30d, each experimental group all has no adverse effects to the heading of paddy rice early growth and later stage, and with the difference of blank group not significantly (P＞0.05), therefore, the two careless ether microcapsule formulations that the embodiment of the invention 1,2,3,9 makes is to rice safety.
Embodiment 11 two careless ether microcapsule formulations provided by the invention field trial of cutting weeds
Method according to embodiment 2, the two careless ether microcapsule formulations that detection embodiment 1,2,3,4,5,6,7,8,9 makes is to the preventive effect of weeds in field, compare with aqueous suspension agent with wetting powder, behind the dispenser 30d, all improve preventive effect, fresh weight preventive effect and comprehensive fresh weight preventive effect to weeds, had significant difference (P＜0.05).Each experimental group all has no adverse effects to the heading of paddy rice early growth and later stage, and with the difference of blank group not significantly (P＞0.05), therefore, the two careless ether microcapsule formulations that the embodiment of the invention 1,2,3,4,5,6,7,8,9 makes is to rice safety.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a two careless ether micro-capsule suspension comprises following component: two careless ethers, 10%～30% by weight percentage; Wetting agent, 0.1%～2%; Dispersant, 1%～8%; Capsule material 0.1%～5%; Binding agent, 0.1%～4%, antifreezing agent 1%～5%, water complements to 100%.
2. two careless ether microcapsules SC as claimed in claim 1, it is characterized in that, described wetting agent be selected from that polyoxyethylene nonylphenol ether, OPEO, aliphatic alcohol sulfate, lauryl sodium sulfate, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, sodium alkyl sulfonate, alkyl benzene sulphonate are received, in the dialkyl succinylsuccinate sulfonate, monoalkyl phenyl APEO succinic acid sodium sulfonate, fatty alcohol ethylene oxide adduct sulfonate, alkylphenol formaldehyde condensation product ethylene oxide adduct sulfonate, alkyl amide sulfonate one or more.
3. two careless ether microcapsules suspoemulsion as claimed in claim 1, it is characterized in that described dispersant is to be selected from aliphatic alcohol polyethenoxy base ether, naphthalenesulfonate formaldehyde condensation compound, alkylphenol-polyethenoxy base ether, farming breast 602, farming breast 33, farming breast 34, the castor oil series one or more.
4. two careless ether microcapsules SC as claimed in claim 1 is characterized in that, described capsule is just for being selected from a kind of of Lauxite, melamine resin, ethyl cellulose.
5. two careless ether microcapsules SC as claimed in claim 1, it is characterized in that described binding agent is selected from one or more in xanthans, aluminium-magnesium silicate, sucrose, gelatin, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene glycol, starch, the sodium carboxymethylcellulose.
6. two careless ether microcapsules SC as claimed in claim 1 is characterized in that described antifreezing agent is selected from one or more in ethylene glycol, propane diols, urea, the sodium chloride.
7. such as the preparation method of each described two careless ether microcapsules SCs of claim 1-6, it is characterized in that, comprise step:
(1) by weight percentage, with the two careless ethers 10%～30% of component, wetting agent 0.1%～2%, dispersant 1%～4%, water is an amount of, enters horizontal sand mill after mixing and carries out sand milling, adds capsule in the material behind the sand milling and just mixes.
8.(2) step (1) gained suspending agent is formed the capsule skin through Lauxite, melamine resin, ethyl cellulose at particle surface, then add dispersant 1%～4%, binding agent 0.1%～4%, antifreezing agent 1%～5%, finally be processed into content 10%～30%, the microcapsules SC of particle diameter 1～10 nanometer.
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| CN106508966A (en) * | 2016-10-13 | 2017-03-22 | 常州亚环环保科技有限公司 | Method for preparing slow-release biomass algistat |
| CN109757475A (en) * | 2019-03-01 | 2019-05-17 | 杨卫东 | A kind of microcapsule formulation and preparation method thereof coating solid pesticide raw medicine |
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