CN104814016A - Corn field weed control composition - Google Patents

Abstract

The invention discloses a corn field weed control composition which comprises active ingredients A, B and C, wherein the active ingredient A is tembotrions; the active ingredient B is atrazine; and the active ingredient C can be metolachlor, s-metolachlor or isoxaflutole; the ratio of the active ingredient A to the active ingredient B to the active ingredient C in parts by weight is (1-5) to (1-15) to (1-10); and the total mass of the active ingredient A, the active ingredient B and the active ingredient C is 3%-85% of the mass of a pesticide composition. The weed control composition disclosed by the invention can be prepared into one of a suspending agent, an oil suspension agent, wettable powder or a water dispersible granule according to the application requirements, and is used for preventing and removing annual weeds of a corn field; the effect of the composition for preventing and removing the annual weeds of the corn field is obviously superior to that of a single dosage; the medicine dose is reduced; and the weed resistance is delayed.

Description

A kind of cornfield weeding composition

Technical field

The present invention relates to a kind of Herbicidal combinations of Ternary, for control of maize field annual weed.

Background technology

Chemical method weeding is agriculturally one of Main Means controlling weeds.In recent years, because some weed killer herbicide kind large area are used alone, a lot of weeds have been caused to develop immunity to drugs.Meanwhile, grass when weeds occur is mutually complicated, and multiple weeds are mixed raw, and single variety weed killer herbicide uses can not solve farmland weed, all can show defect in a certain respect and limitation.Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.

Ring sulphur ketone, English common name: tembotrione, chemical name: 2-(the chloro-4-mesyl of 2--3-[(2,2,2-trifluoro ethoxy) methyl] benzoyl) cyclohexane-1,3 diketone.Ring sulphur ketone belongs to three ketones weed killer herbicide, and after susceptible weeds absorbs this medicine, by suppressing HPPD enzyme and destroy chlorophyllous formation, the weeds chlorosis that causes being injured is withered, efficient to weeds such as corn field green foxtail, barnyard grass, lamb's-quarters, field bindweed, field thistles.

Atrazine, English common name: atrazine, the chloro-4-ethylamino-of chemical name: 2--6-isopropylamine base-s-triazine.Atrazine belongs to triazine herbicide, is before interior suction selectivity seedling, seedling rear enclosed weed killer herbicide.Absorb primarily of plant root and upwards conduct, suppressing the photosynthesis of weeds, make it withered.For corn field, multiple annual gramineae and broad leaved weed can be prevented and kill off, as weeds such as lady's-grass, barnyard grass, green foxtail, nutgrass flatsedge, amur foxtail, knotweed, lamb's-quarters, Cruciferae, pulse families.

Isopropyl methoxalamine, English common name: metolachlor, chemical name: 2-methyl-6-ethyl-N-(1-methyl-2-methoxyethyl)-N-ChloroacetYl aniline.Isopropyl methoxalamine belongs to acetamide-group herbicides, absorbs, upwards conduct mainly through weeds young shoot, suppresses the growth of young shoot and root.The protein synthesis of the main sprout inhibition seed of mechanism of action, secondly suppress choline to infiltrate phosphatide, interference lecithin is formed.Because grassy weed young shoot absorbs energy the force rate broad leaved weed of isopropyl methoxalamine by force, the effect that thus grassy weed prevented and kill off by this medicine is better than broad leaved weed far away.S-metolachlor is the smart body of isopropyl methoxalamine, and activity is higher.

Isoxazole humulone, English common name: isoxaflutole, chemical name: 5-cyclopropyl-1,2-oxazole-4-base (the fluoro-2-mesyl-p-methylphenyl of α, α, α-three) ketone.Isoxazole humulone belongs to organic heterocyclic class selectivity internal-suction type herbicide before seedling stage, mainly works via weeds young root Assimilation and conductivity.After susceptible weeds absorbs this medicine, by suppressing HPPD enzyme and destroy chlorophyllous formation, the weeds chlorosis that causes being injured is withered.

Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.Being screened by formulation of pesticide, can effectively improve actual control efficiency, reduce dosage, reduce costs, delay disease, worm, the drug-fast generation of crop smothering, is the important means that agricultural synthesis is administered.The present inventor conducts in-depth research ring sulphur ketone, atrazine and a kind of recipe determination be selected from isopropyl methoxalamine, S-metolachlor Huo isoxazole humulone, find that ring sulphur ketone, atrazine and the one be selected from isopropyl methoxalamine, S-metolachlor Huo isoxazole humulone carry out mixture, synergistic effect is had to corn field annual weed in certain mixed ratio scope, after further study, the present invention is completed.

Summary of the invention

The object of the invention is to solve in prior art to farmland weed develop immunity to drugs problem and actual control efficiency poor, provide a kind of efficient, low toxicity, quick-acting are good and the lasting period is long, are conducive to the composition pesticide of the farmland weed comprehensive regulation.

Another object of the present invention is to provide and is used for preventing and kill off farmland weed by this composition pesticide, is particularly useful for preventing and kill off corn field annual weed etc.

Technical scheme: for achieving the above object, the invention provides a kind of Herbicidal combinations, and its active ingredient is A, B and C; Wherein, A is ring sulphur ketone, and B is atrazine, and C is selected from the one in isopropyl methoxalamine, S-metolachlor Huo isoxazole humulone; The ratio of quality and the number of copies of effective constituents A, B and C is 1 ~ 5:1 ~ 15:1 ~ 10; The mass percent of quality summation in composition pesticide of effective constituents A, B and C is 3% ~ 85%, and all the other are allow in agricultural chemicals to use and acceptable auxiliary element.

Herbicidal combinations of the present invention can be prepared into the multiple application forms being applicable to agriculturally using, and reasonable formulation has suspending agent, oil-suspending agent, wetting powder or water dispersible granules.

The production technology of the various application forms of described Herbicidal combinations all belongs to existing known technology, does not repeat them here.

The auxiliary agent used in composition pesticide provided by the invention comprises solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, PH conditioning agent, defoamer, antifreezing agent, deionized water, filler etc., be all various auxiliary agents conventional in Pesticide formulation, concrete composition and consumption are crossed simple test according to recipe requirements and are determined.

The production technology of the various application forms of composition pesticide provided by the invention all belongs to existing known technology, does not repeat them here.

The frequency of administration of the present composition and amount of application change with crops, weeds, weather condition and have small variations, can by the object using suitable dosage reach effectively control.

Herbicidal combinations provided by the invention has following beneficial effect:

1, Herbicidal combinations provided by the invention, obvious synergistic effect is shown in certain ratio range, the control efficiency of composition is significantly improved than single dose, reduce the using dosage of agricultural chemicals, decrease times for spraying, reduce drug cost, decrease the adverse effect of agricultural chemicals to ecotope.

2, Herbicidal combinations provided by the invention, the combination of three kinds of active ingredients, expands herbicidal spectrum, and a drug can solve weed problem, compensate for defect when single dose uses and limitation.

3, Herbicidal combinations provided by the invention, three kinds of active ingredient mechanism of action are not quite identical, can overcome the shortcoming that long-term single use easily produces resistance, extend the service life of medicament, to the comprehensive regulation important in inhibiting of Weed Resistance.

4, Herbicidal combinations provided by the invention, drug effect plays rapidly, and the lasting period is long, and use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.

Embodiment

In order to understand essence of the present invention better, below in conjunction with embodiment, content of the present invention is described further, but can not limitation of the present invention be considered as.Be mass percent as follows.

Embodiment 1: described Herbicidal combinations is suspending agent, and each component percentages is respectively:

Concrete operation step is: first mixed by other auxiliary agent, and in clipper, shear-mixed is even, then adds effective constituents A, B and C, in ball crusher, grinds 2-3h, make a diameter all at below 5mm, can obtain herbicide composition suspending agent preparation of the present invention.

Embodiment 2: described Herbicidal combinations is wetting powder, and each component percentages is respectively:

Concrete operation step is: effective constituents A, B and C are mixed with other auxiliary agent and filler, fully stir in stirred tank, mixes, can obtain Herbicidal Compositions Wettable powder preparation of the present invention after airslide disintegrating mill is pulverized.

Embodiment 3: described Herbicidal combinations is water dispersible granules, and each component percentages is respectively:

Concrete operation step is: effective constituents A, B and C are mixed with other auxiliary agent and filler, pulverize with micro jet, add after mediating after carrying out granulation, drying, screening in fluidized-bed granulation dryer, Herbicidal combinations water-dispersible grain agent formulation of the present invention can be obtained.

In above formulation, auxiliary agent is selected from the following stated:

Solvent can be trimethylbenzene, durene, methyl naphthalene, methyl oleate, fatty acid methyl ester, loose base oil, soybean oil, biodiesel, 2-butyl acetate, dimethyl carbonate, diesel oil, white oil, machine oil, etc. in one or more.

Emulsifier can be calcium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether, triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer, dibenzyl xenyl APEO, phenethyl phenol polyethenoxy ether, castor oil polyoxyethylene ether, phenethyl fluosite APEO, phenethyl phenol polyoxyethylene polyoxypropylene ether, alkylaryl polyoxyethylene polyoxypropylene ether, phenethyl phenol formaldehyde resin APEO, Sorbitan fatty acid ester, sorbitan fatty acid ester APEO, natural fatty alcohol and ethylene oxide adduct, fatty acid and ethylene oxide condensate, one or more in polyoxyethylene fatty acid ester etc.

Wetting agent can be one or more in sodium butylnaphthalenesulfonate, lauryl sodium sulfate, aliphatic alcohol polyethenoxy (6-7) ether, aerosol-OT salt, Morwet EFW, alkylnaphthalene sulfonate etc.

Disintegrant can be one or more in sodium bicarbonate, magnesium chloride, aluminium chloride, sodium chloride, urea, ammonium sulfate, bentonite etc.

Dispersant can be the formaldehyde condensation products of methyl naphthalene sulfonic acid sodium, sodium lignin sulfonate, calcium lignosulfonate, to methoxyl group fatty acyl anilinesulfonic acid, desugar one or more in the sodium lignin sulfonate of classification, naphthalene sulfonic acid condensate sodium salt, alkyl naphthalene sulfonic acid condensation polymer sodium salt, alkylphenol polyoxyethylene formaldehyde condensation products sulfuric acid etc.

Thickener can be one or more in xanthans, aluminium-magnesium silicate, bentonite, white carbon etc.

PH adjusting agent can be one or more in ammonium hydroxide, potassium hydroxide, sodium hydroxide, hydrochloric acid, acetic acid, citric acid, phosphoric acid etc.

Stabilizing agent can be one or more in epoxidized soybean oil, epoxychloropropane, butylated hydroxy anisole, dibutyl hydroxy toluene, n-propyl gallate, ditert-butylhydro quinone etc.

Defoamer can be one or more in silicone compound, methyl alcohol, silicone oil etc.

Antifreezing agent can be one or more in glycerine, ethylene glycol, propane diols, sorbierite, polyethylene glycol etc.

Carrier can be one or more in kaolin, diatomite, bentonite, white carbon, precipitated calcium carbonate, attapulgite, clay, talcum powder, quartz sand, starch, APG etc.

Composition pesticide provided by the invention, usually adopts spray method to use, also can adopt other operation techniques agriculturally applied as required.

Composition pesticide provided by the invention, should use before seedling in use after corn field is broadcast.

For further sulphur ketone, atrazine and a kind of mixture that is selected from isopropyl methoxalamine, S-metolachlor or isoxazole humulone of unlinking is to the preventive effect of weeds, the present inventor has carried out formula test and corn field control effectiveness test to ring sulphur ketone, atrazine and a kind of mixture be selected from isopropyl methoxalamine, S-metolachlor or isoxazole humulone.

Embodiment 4: the corn field test of pesticide effectiveness

Test site: bamboo plantation village, Ren Shan town, Huizhou Huidong County.

Subjects and method:

Lady's-grass, green foxtail, kitchen garden, the rhizome of nutgrass flatsedge, lamb's-quarters, at corn seeding after 48 hours, be watered this Herbicidal combinations and carry out soil spraying.

Result of the test: in table 1, as can be seen from the test results: the average preventive effect of Herbicidal combinations of the present invention to corn field annual weed reaches more than 90%, significantly better than the single dose of contrast, synergistic effect is remarkable, and expanding herbicidal spectrum, quick-acting and lasting period are obviously better than single dose.Herbicidal combinations of the present invention is to corn safety, and unrestraint germination rate or the underproduction affect.

Table 1, control of maize field annual weed field control effectiveness test result (after medicine 20 days)

Upper table 1# is 10% ring sulphur ketone wetting powder, 2# is 50% atrazine missible oil, and 3# is 72% isopropyl methoxalamine missible oil, 4# is 96% S-metolachlor missible oil, 5# is 30% isoxazole humulone missible oil, 6# is 5% ring sulphur ketone 50% atrazine 5% isoxazole humulone water dispersible granules, 7# is 3% ring sulphur ketone 30% atrazine 27% isopropyl methoxalamine wetting powder, 8# is 4% ring sulphur ketone 40% atrazine 20% S-metolachlor wetting powder.

Claims (5)

1. a cornfield weeding composition, is characterized in that: active ingredient is A, B and C; Wherein, A is ring sulphur ketone, and B is atrazine, and C is selected from the one in isopropyl methoxalamine, S-metolachlor Huo isoxazole humulone.

2. a kind of cornfield weeding composition according to claim 1, is characterized in that: the ratio of quality and the number of copies of effective constituents A, B and C is 1 ~ 5:1 ~ 15:1 ~ 10.

3. a kind of cornfield weeding composition according to claim 1 and 2, is characterized in that: the mass percent of quality summation in composition pesticide of effective constituents A, B and C is 3% ~ 85%.

4. a kind of cornfield weeding composition according to claim 1, is characterized in that: its formulation is the one in suspending agent, oil-suspending agent, wetting powder or water dispersible granules.

5. a kind of cornfield weeding composition according to claim 1 is preventing and kill off the application in corn field annual weed.