CN102217624A

CN102217624A - Metamifop compound herbicide

Info

Publication number: CN102217624A
Application number: CN201110099367XA
Authority: CN
Inventors: 苏建坤; 陆玉荣; 吉春明; 张春梅; 朱锦磊; 刘怀阿; 刘建凤
Original assignee: Jiangsu Lixiahe Prefecture Institute Of Agricultural Science
Current assignee: Jiangsu Lixiahe Prefecture Institute Of Agricultural Science
Priority date: 2011-04-20
Filing date: 2011-04-20
Publication date: 2011-10-19

Abstract

The invention which provides a metamifop compound herbicide relates to the technical field of agricultural production, and specially relates to the technical field of paddy field compound herbicide production. Metamifop and bensulfuron methyl are treated as effective components with a mass ratio of 3 to 8:1. The metamifop compound herbicide, which is prepared through conventional methods and is a novel, high efficient and special herbicide for the paddy field, allows various weeds to be controlled once and effectively, can be used in paddy direct-seeding fields, dry direct-seeding fields, seedling fields, transplantation fields, throwing-transplanted fields or machine-transplanted fields, and has special efficacy on weeds such as barnyard grass, Chinese sprangletop, digitaria sanguinalis and the like which are difficult to control in the direct-seeding fields. The herbicide allows paddy to be safe, usage to be convenient, labor and time to be saved and production and income to be increased.

Description

The metamifop complex weedicide

Technical field

The present invention relates to field of agricultural production technologies, particularly the built herbicide for rice field production technical field.

Background technology

Old products such as dichloro quinolinic acid are lower to the grass of the barnyard grass in paddy field control efficiency, still do not have excellent barnyard grass agent extremely at present.In addition, when using dichloro quinolinic acid, poisoning easily takes place in factors such as weather, temperature, seedling quality and improper use.

Though its activity of fourth benzyl composition weed killer herbicide is high, safety is good, cost is low, is the govern-house-variety in the southern seedling throwing field weed killer herbicide, this class weed killer herbicide is poor slightly to the preventive effect of barnyard grass grass, and preventive effect is only 65%～76%.Therefore, almost there is not to cut weeds, can removes again the weed killer herbicide of barnyard grass grass on the market.

Metamifop (Metamifop) is the fragrant phenoxy propionic acid ester weed killer herbicide by the exploitation of Korea S chemical industry Institute for Research and Technology, can be fabulous prevent and kill off most of annual gramineous weeds, different with this type of weed killer herbicide of great majority is, metamifop is to rice safety, can effectively prevent and kill off the paddy field main weeds, as barnyard grass grass, moleplant seed, lady's-grass and eleusine indica, be mainly used in and transplant and the direct sowing rice field weeding.The Metamifop low toxicity, environmentally safe, miscibilty is widely arranged, and be expected to be used for other crops and lawn weeding, be a very promising weed killer herbicide.

In recent years, along with the continuous expansion of province direct sowing rice field areas such as Jiangsu, Anhui, Hunan, Hubei, Zhejiang, Jiangxi, the harm in rice field is more and more heavier during barnyard grass grass, moleplant seed and lady's-grass grassy weeds such as (direct-sowing dries).Because direct sowing rice field rice shoot layout is irregular, the control of weeds difficulty increases, and the underproduction obviously and can't carry out mechanical harvesting when weeds were serious.

At present the weed killer herbicide commonly used of direct sowing rice field mainly contain dichloro quinolinic acid, penoxsuam, cyhalofop-butyl etc. a few, this several herbicides to kill the grass spectrum narrower.Can prevent the barnyard grass grass as dichloro quinolinic acid and penoxsuam, but not anti-moleplant seed, cyhalofop-butyl can be prevented moleplant seed, not anti-barnyard grass grass.And the metamifop broad weed-killing spectrum has special efficacy to barnyard grass grass, moleplant seed, lady's-grass, and a drug can be prevented and kill off all main grassy weeds in the direct sowing rice field, both savings of labor, laborsaving, can reduce the agricultural chemicals access times again, thereby save use cost, reduce environmental risk.But this medicament is relatively poor to the broad leaved weed preventive effect.

Bensulfuron-methyl is a kind of sulfonylurea herbicide, for selectivity inner sucting conduction type weed killer herbicide, mainly is absorbed by root system, shifts rapidly in weeds plant body, suppresses growth, and weeds are dead gradually.Can prevent and kill off annual and perennial broadleaf weed and sedge weed, as different in nature nutgrass flatsedge, Herba Cyperi Glomerati, firefly Lin, Monochoria vaginalis, Chinese celery, mexicana, angustifolia arrowhead herb, pondweed, blue or green duckweed, Eclipta prostrata.The barnyard grass grass there is certain preventive effect, invalid to moleplant seed.Paddy rice can be decomposed this medicament, to almost not influence of paddy growth, and efficacy stability, safe, the lasting period is long, generally uses in 1 ~ 3 leaf phase of paddy rice, and every mu of usefulness 10% wetting powder 15 ~ 30 grams are mixed pesticide-clay mixture and are spread fertilizer over the fields, and also can convert water spray.Kept water layer 3 ~ 5 days behind the medicine.Transplant field is being inserted back medication in 3 ~ 20 days, and water conservation is 5 ~ 7 days behind the medicine.But late rice kind (round-grained rice, glutinous rice) is responsive relatively, should avoid using in the late rice bud phase as far as possible, otherwise easily produce poisoning.

Summary of the invention

The object of the invention is to propose a kind of metamifop complex weedicide that can cut weeds, can remove the barnyard grass grass again.

Active ingredient of the present invention is metamifop and bensulfuron-methyl, and the mass ratio of described metamifop and bensulfuron-methyl is 3～8: 1.

The present invention can the conventional method compatibility forms the metamifop complex weedicide, is a kind of novel, paddy field herbicides special efficiently, can disposablely effectively prevent and kill off multiple weeds, and water direct seeding, direct-sowing dry, rice seedling bed, transplanting, seedling throwing field or machine transplanting of rice seedling all can use.Especially weeds such as the difficult anti-barnyard grass grass of direct sowing rice field, moleplant seed, lady's-grass there is special efficacy.The present invention is to rice safety, and is easy to use, saves labor increasing both production and income.

Embodiment

One, the processing step of preparation metamifop complex weedicide of the present invention:

1, weighing: take by weighing metamifop 3～8kg, bensulfuron-methyl 1kg, auxiliary agent NN0(benzene sulfonic acid sodium salt formaldehyde condensation products respectively) 1.5kg, BX (sodium butylnaphthalenesulfonate) 1.5 kg, kaolin 38～43kg.

2, above each raw material is mixed after,, mix packing again through comminution by gas stream.

Two, metamifop complex weedicide of the present invention use example:

Carry out in the metamifop complex weedicide field experiment regional institute of agricultural sciences bayhead base of going to river in Jiangsu.Weeds have barnyard grass grass, moleplant seed, convexutricle sedge herb, Procumbent Falsepimpernel, mexicana, Monochoria vaginalis, false loosestrife etc.Paddy rice was sowed on June 5th, 2009, and rice varieties is for raising the spoke round-grained rice No. 8.Dispenser in after planting 18 days, paddy rice 1 heart stage～3 leaf phase of 2 leaves during dispenser, 1 heart stage of grassy weed 2 leaves～2 leaves.Dose 1800g/hm ², with workers and peasants' one 16 type sprayers spray mist, amount of liquid medicine is 450 L/hm ², 35 days " Invest, Then Investigate " drug effects.The result shows, the grassy weed preventive effect is reached 95. 6%, the preventive effect of broad leaved weed is reached 91.3%, and paddy rice is not produced poisoning, and be the outstanding pharmacopoeia of paddy field weeding.

Three, the application effect contrast table of metamifop complex weedicide of the present invention and other weed killer herbicide:

Metamifop complex weedicide and other weed killer herbicides are tested the regional institute of agricultural sciences bayhead base of going to river and are carried out in Jiangsu.Weeds have barnyard grass grass, moleplant seed, convexutricle sedge herb, Procumbent Falsepimpernel, mexicana, Monochoria vaginalis, false loosestrife etc.Paddy rice was sowed on June 3rd, 2008, and rice varieties is for raising the spoke round-grained rice No. 8.Dispenser in after planting 18 days, paddy rice 1 heart stage～3 leaf phase of 2 leaves during dispenser, 1 heart stage of grassy weed 2 leaves～2 leaves.With workers and peasants' one 16 type sprayers spray mist, amount of liquid medicine is 450 L/hm ², 35 days " Invest, Then Investigate " drug effects.The results are shown in following table:

The medicament title	Preventive effect (%) to grassy weed	Preventive effect (%) to broad leaved weed
			Metamifop complex weedicide WP 1800g/hm ²	96.7aA	92.5aA
35% fourth benzyl WP 2250g/hm ²	87.4cB	90.4bB
			50% dichloro quinolinic acid WP 450g/hm ²	90.5bB	15.5cC
10% cyhalofop-butyl EC 900ml/hm ²	91.2bB	10.2cc

Annotate: lowercase is a significant difference, and capitalization is that difference is extremely remarkable.

The result shows that metamifop complex weedicide of the present invention reaches 96. 7% to the grassy weed preventive effect, and the preventive effect of broad leaved weed is reached 92.5%, have utmost point significant difference with weed killer herbicide contrast commonly used, and paddy rice is not produced poisoning, and be the desirable medicament of paddy field weeding.

Claims

1. metamifop complex weedicide, active ingredient is metamifop and bensulfuron-methyl, the mass ratio of described metamifop and bensulfuron-methyl is 3～8: 1.