CN103493827A

CN103493827A - Chemical herbicide for crops

Info

Publication number: CN103493827A
Application number: CN201310453425.3A
Authority: CN
Inventors: 李长敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-29
Filing date: 2013-09-29
Publication date: 2014-01-08

Abstract

The invention relates to a chemical herbicide for crops. The chemical herbicide comprises effective components including oxadiazon and pendimethalin, wherein the weight ratio of the oxadiazon to the pendimethalin is 25 to 30. The chemical herbicide has an obvious synergistic effect and the pesticide effect is improved greatly; the pesticide effect is improved and the use amount of effective components in a field is reduced; the production cost and the use cost are reduced and herbicide residues are reduced and environmental pollution is alleviated; the compound herbicide is composed of effective components of different function mechanisms and the number of the acting sites is increased, so that the generation of the drug resistance of weeds is overcome and delayed; the chemical herbicide for the crops is an important manner for comprehensively preventing the weeds in the field.

Description

The crops chemical herbicide

Technical field

The present invention relates to the crops chemical herbicide of a kind of Han oxadiazon and pendimethalin.

Background technology

Often there is defect in various degree in the weed killer herbicide kind that contains the single-activity component on the Agriculture Field control of weeds, and as weeds after continuous administration easily develop immunity to drugs, the herbicide spectrum is narrow, and application times is understood the weighting ring environment pollution more.For the upper weeds that produce resistance of control agricultural, a kind of way is to release new and the new component of existing kind without cross resistance.But the development cost of new active ingredient is high, the construction cycle is long, and does not all catch up with the speed that weeds produce resistance forever.Other way, such as crop allocation adjustment, different agricultural chemicals rotations etc., in the process of practical operation, is difficult to really play obvious effect.The different cultivars composition carries out composite, is the modal method of control resistant weed.

Summary of the invention

For the problems referred to above, the present invention aims to provide that a kind of resistance risk is little, cost is low, good drug efficacy, the lasting period is long, environmental pollution is little crops chemical herbicide, its active ingredient Wei Evil humulone and pendimethalin.Another object of the present invention is by the complex composition of Han oxadiazon and pendimethalin, be equipped with suitable auxiliary agent and make the weed killer herbicide of multiple formulation, make it to multiple annual unifacial leaf and broadleaf weed, field grassy weed, part broad leaved weed and nutgrass flatsedge, preventive effect preferably all be arranged, enlarged the herbicide spectrum.

Crops chemical herbicide of the present invention, its active ingredient Wei Evil humulone and pendimethalin, the weight ratio of Suo Shu Evil humulone and pendimethalin is 25:30.

Except above-mentioned You is imitated into Fen Evil humulone and pendimethalin, also comprise carrier and auxiliary agent in described crops chemical herbicide, to be mixed with wetting powder, water dispersible granules, missible oil or aqueous suspension agent.

Described carrier is one or more in water, solvent or filler.

Described auxiliary agent at least comprises a kind of surfactant.Surfactant can be one or more in emulsifier, dispersant, wetting agent or bleeding agent, can be nonionic or anionic, can be also two types of compound uses.

Material described above is all to well known to a person skilled in the art material, can buy by market.

Zhong Evil humulone of the present invention for preventing and kill off multiple annual unifacial leaf and broadleaf weed, is mainly used in paddy field weed-killer, also effective to the peanut of dry land, cotton, sugarcane etc.; Before tagging property bud, post-emergence herbicide.Do soil treatment, the use of floods and droughts field.Mainly by weeds young shoot and cauline leaf, absorb and work, can bring into play good removing activity having under the condition of light.To the budding period weeds particularly responsive, when weeds one germinate, the growth of bud scale is just suppressed, its tissue is rotten rapidly, weeds death; Along with weeds growth drug effect descends, substantially invalid to the weeds that grown up.For preventing and kill off barnyard grass, moleplant seed, ditch millet, difformed galingale herb, Monochoria vaginalis, mexicana, globe daisy alkali grass, Sagittaria pygmaea etc. in rice field.Also can be used for preventing and kill off crop annual gramineous weed and the broad leaved weeds such as cotton, soybean, sunflower, peanut, potato, sugarcane, celery, fruit tree.Amaranthaceae, Chenopodiaceae, Euphorbiaceae, cuckooflower section, optically-active section weeds are had to good preventive effect.

Pendimethalin in the present invention is that before the selectivity bud, after bud, upland field soil is processed weed killer herbicide.Weeds absorb medicament by the young shoot of sprouting, and enter medicament and tubulin binding in plant corpus, suppress the mitosis of plant cell, thereby cause weeds death.Be widely used in the various crop field weedings such as corn, soybean, peanut, cotton, direct-seeding dry rice, potato, tobacco, vegetables, prevent and kill off annual gramineous weed, part broad leaved weed and nutgrass flatsedge.As barnyard grass, lady's-grass, green foxtail, moleplant seed, eleusine indica, kitchen garden, amaranth, lamb's-quarters, piemarker, black nightshade, cyperus iria, difformed galingale herb etc.Preventive effect to grassy weed is better than broad leaved weed.

Crops chemical herbicide provided by the invention is prevented and kill off multiple annual unifacial leaf and broadleaf weed, field grassy weed, part broad leaved weed and nutgrass flatsedge for various crop fields such as corn, paddy rice, soybean, and can reduce the application dosage of each active ingredient, reduce costs, reduce pollution.

Beneficial effect of the present invention is: the synergistic effect of a kind of crops chemical herbicide is obvious, and drug effect significantly improves; Drug effect improves, and the field consumption of active ingredient descends, and has reduced production and use cost, reduces residue of pesticide and environmental pollution; Compound herbicide is comprised of the active ingredient of different mechanism of action, and action site increases, and is conducive to overcome and delay the generation of herbicide resistance, is the important means of integrated control weeds in field.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

Embodiment 1

Take that to prepare 1 ton of 55% Evil humulone pendimethalin wetting powder be example.

Formula: Evil humulone 250kg: pendimethalin 300kg, wetting agent lauryl sodium sulfate 20kg, dispersant calcium lignosulfonate 80kg, filler white carbon 180kg, filler kaolin 170kg.

Preparation method: add in white carbon and kaolin by above formula rate ， Evil humulone and pendimethalin, and add therein wetting agent lauryl sodium sulfate and dispersant calcium lignosulfonate to mix, after air-flow crushing, mix and make wetting powder again.Capital equipment has mixer, airslide disintegrating mill.

Embodiment 2

The preparation double centner 55% Evil humulone pendimethalin water dispersible granules of take is example.

Formula: Evil humulone 25kg, pendimethalin 30kg, wetting agent dodecylbenzene sodium sulfonate 10kg, dispersant alkylnaphthalene sulfonate formaldehyde condensation products 15kg, filler attapulgite 20kg.

Preparation method: Evil humulone and pendimethalin are added in attapulgite by above formula rate, and add therein wetting agent dodecylbenzene sodium sulfonate and dispersant alkylnaphthalene sulfonate formaldehyde condensation products to mix, add 10～25% water after air-flow crushing, then through kneading, granulation, drying, screening, make the water dispersible granules product; The powder that maybe will pulverize is water spray, granulation, drying in boiling granulator, and screening afterwards makes product.Capital equipment has mixer, airslide disintegrating mill, kneader, Squeezinggranulator, drying room or fluid-bed drying, or boiling granulator, screening machine.

Embodiment 3

Take that to prepare 1 ton of 55% Evil humulone pendimethalin missible oil be example.

Formula: Evil humulone 250kg, pendimethalin 300kg, emulsifier is selected agriculture breast 500# and agriculture breast 600#, and consumption is respectively 40kg and 50kg, and solvent is selected N, N-dimethyl formamide 110kg, dimethylbenzene 250kg.

Preparation method: by above formula rate ，, Evil humulone and pendimethalin are added in dimethylbenzene, and add therein emulsifier agriculture breast 500# and agriculture breast 600#, solvent to select N, N-dimethyl formamide, in being uniformly mixed still, being uniformly mixed and getting final product.Be uniformly mixed still and can select enamel reaction still, stainless steel stirred tank etc.

Actual farming experiment show by Bi Evil humulone and pendimethalin composite after, overcome the shortcoming that both use separately, have significant synergies.Duration of test is observed, and crop is without symptom of chemical damage, and test medicine is to crop safety.

Claims

1. a crops chemical herbicide, is characterized in that, its active ingredient is Evil humulone and pendimethalin, and the weight ratio of Evil humulone and the pendimethalin stated is 25:30.

2. a kind of crops chemical herbicide according to claim 1, is characterized in that, also comprises carrier and auxiliary agent in this chemical herbicide, to be mixed with wetting powder, water dispersible granules, missible oil or aqueous suspension agent.

3. a kind of crops chemical herbicide according to claim 1, is characterized in that, described carrier is one or more in water, solvent or filler.

4. a kind of crops chemical herbicide according to claim 1, is characterized in that, described auxiliary agent at least comprises a kind of surfactant; Surfactant can be one or more in emulsifier, dispersant, wetting agent or bleeding agent.

5. according to the described a kind of crops chemical herbicide of any one claim in claim 1～5, it is characterized in that, the formulation of described chemical herbicide is missible oil, wetting powder, aqueous suspension agent or water dispersible granules.