CN102422838A

CN102422838A - Compound weeding composition

Info

Publication number: CN102422838A
Application number: CN2012100096787A
Authority: CN
Inventors: 刘东卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-13
Filing date: 2012-01-13
Publication date: 2012-04-25

Abstract

The invention discloses a compound weeding composition which comprises active ingredients of alon, clodinafop-propargyl and thifensulfuron in a mass ratio of (30-60):(1-10):(0.5-5). In the composition, the components are synergic, thus the composition has a good weeding effect, a wide weeding spectrum, few residues, safety to crops, low cost and wide applicability, and can be applied to weeds which are difficult to remove.

Description

The compound herbicide composition

Technical field

The invention belongs to pesticide field, be specifically related to a kind of compound herbicide composition.

Background technology

Isoproturon is the substituted urea class selective herbicide.Pure article are white crystals, no color or smell crystallization, 151～153 ℃ of fusing points.Solvability in the time of 20 ℃ in water is 70mg/L.Be insoluble in water, dissolve in most of organic solvents, more stable to acid, alkali and light, wetting powder is arranged, to people and animals' low toxicity.Rat acute per os toxicity LD501826mg/kg.Make by p-isopropyl phenyl isocyanate and dimethylamine reaction.Be used for barley, wheat, cotton, peanut, corn, paddy rice, legume crop Tanaka and prevent and kill off annual weed, consumption 1.0～1.5kg/ha.Isoproturon is the inner sucting conduction type processing soil treatment agent cauline leaf inorganic agent of holding concurrently.Medicament is taught and is accumulated in the blade after being absorbed by plant root, suppresses photosynthesis, causes weeds dead.

Alkynes grass ester is by development of ciba-Geigy company and exploitation, belongs to fragrant phenoxy propionic acid class weed killer herbicide, and effectively the biosynthesis of type of inhibition ester is the auxilliary quick A hydroxylase inhibitors of acetyl, and these article in soil, are degraded to the free acid phenyl very soon and pyridine moiety gets into soil.These article can be prevented and treated grassy weeds such as wheat vole tail amur foxtail, tall oat grass, perennial ryegrass, rough stalked blue grass green foxtail.

Thifensulfuronmethyl belongs to selective herbicide behind the inner sucting conduction type seedling, is the branched-chain amino acid synthetic inhibitor, can suppress the biosynthesis of valine, leucine, isoleucine, stops cell division, and sensitive crop is stopped growing.Be mainly used in the broad leaved weed of preventing and kill off between cereal crop wheat, barley, oat, corn field.

At present, weed killer herbicide has been widely applied in the agricultural production, but single weed killer herbicide is because a large amount of abuse, and to the bad adaptability of different situations, brings very easily that herbicidal effect is not good, safety is low and cause problems such as the underproduction in various degree easily.The weed killer herbicide mixture preparation sharply increases in recent years; But repeat in a large number preparation and use, and only pay attention to low-cost and to ignore rough sledding such as safety and drug effect still serious, thereby to having caused poisoning in the farmland low-levelly; Not only unfavorable to the life of paddy rice also can influence the growth of following batch of effect.The control of intractable weed still is the difficult problem that existing weed killer herbicide is used in addition.

Summary of the invention

The objective of the invention is on the basis of existing technology, a kind of ternary weeding composition is provided.

Another object of the present invention provides a kind of purposes of above-mentioned composition.

The object of the invention can reach through following measure:

A kind of compound herbicide composition, said composition comprise active ingredient isoproturon, alkynes grass ester and thifensulfuronmethyl, and the mass ratio between the three is 30～60: 1～10: 0.5～5.

In the composition of the present invention, the mass ratio of active ingredient isoproturon, alkynes grass ester and thifensulfuronmethyl is preferably 40～60: 2～10: 1～5; Further be preferably 50～60: 2～8: 1～4; Further be preferably 50～60: 3～7: 1～4; Most preferably be 55: 5: 1.

Also comprise acceptable auxiliary on the agricultural chemicals in this composition, like in bulking agent, thinner, surfactant, emulsifier, dispersant, organic solvent or the water etc. one or more.

This composition can also combine prior art to process various formulations, like solution, emulsion, wetting powder, suspension, pulvis, soluble powder, granule, suspended emulsion concentrate, solid pharmaceutical preparation, microcapsules etc.In preparation, the mass content of active ingredient can be in 1～90% scope.

Associating components composition of the present invention can be prevented and treated the wheat paddock grassy weed effectively, and particularly cutting weeds to the difficulty of wheat paddock has higher removal, like amur foxtail, wild oat etc.Can adopt spraying to spread fertilizer over the fields, the active principle consumption in every mu of field reaches 10～200g, and preferred 80～160g can reach preferable control efficiency.Have synergistic function between each composition of said composition, its herbicidal effect is good, and herbicidal spectrum is wide, and more can be applicable to difficulty and cut weeds, low-residual, to crop safety, cost is low, wide adaptability.

Embodiment

Embodiment 1

Each composition weight proportioning and compound method: isoproturon 55%, alkynes grass ester 5%, thifensulfuronmethyl 1%, sodium lignin sulfonate and alkylnaphthalene sulfonate 15%, surplus is kaolin and white carbon black.Each component is once poured in the mixing kettle, under agitation evenly also pulverized.

Embodiment 2

Each composition weight proportioning and compound method: isoproturon 55%, alkynes grass ester 10%, thifensulfuronmethyl 1%, sodium lignin sulfonate and alkylnaphthalene sulfonate 15%, surplus is kaolin and white carbon black.Each component is once poured in the mixing kettle, under agitation evenly also pulverized.

Embodiment 3

Each composition weight proportioning and compound method: isoproturon 40%, alkynes grass ester 4%, thifensulfuronmethyl 2%, sodium lignin sulfonate 15%, surplus is a kaolin.Each component is once poured in the mixing kettle, under agitation evenly also pulverized.

Embodiment 4

Each composition weight proportioning and compound method: isoproturon 55%, alkynes grass ester 4%, thifensulfuronmethyl 1%, sodium lignin sulfonate 15%, surplus is a kaolin.Each component is once poured in the mixing kettle, under agitation evenly also pulverized.

Embodiment 5

Each composition weight proportioning and compound method: isoproturon 60%, alkynes grass ester 3%, thifensulfuronmethyl 2%, sodium lignin sulfonate 15%, surplus is kaolin and white carbon black.Each component is once poured in the mixing kettle, under agitation evenly also pulverized.

Embodiment 6

Each composition weight proportioning and compound method: isoproturon 53%, alkynes grass ester 4%, thifensulfuronmethyl 1%, sodium lignin sulfonate 14%, surplus is kaolin and white carbon black.Each component is once poured in the mixing kettle, under agitation evenly also pulverized.

Embodiment 7: the experiment of control wheat paddock weeds

Supply the reagent agent

Test medicine has embodiment 1-5; 55% isoproturon wp (pressing the preparation of embodiment 1 method), 5% alkynes grass ester wp (pressing the preparation of embodiment 1 method), 1% thifensulfuronmethyl wp (pressing the preparation of embodiment 1 method); 60% isoproturon. and alkynes grass ester wp (isoproturon: alkynes grass ester=55: 1, press the preparation of embodiment 1 method)

Experimental design

10 processing are established in test, and embodiment 1-5 is 80g (the active ingredient, down together); Isoproturon wp is 60g; Alkynes grass ester is 20g; Thifensulfuronmethyl is 10g; Isoproturon. alkynes grass ester is 70g; Clear water contrast (CK).Each handles repetition 4 times, sub-district area 50m ², district's group is arranged at random.

Experiment field weed and basic condition

Grassy weed mainly contains amur foxtail (Alopecurus aequslis), wild oat (Avena fatua) in wheat experiment field.The experimental field physical features is smooth, and irrigation and drainage are convenient.The wheat Routine Management, wheat is in jointing in earlier stage during dispenser.March 1 executed with knapsack sprayer and spills.

Experimental result

If complete death then herbicidal effect is evaluated as 100%, if then be 0% to no effect.20d observes behind the medicine, supplies 9 groups of weed killer herbicides of examination under design dosage, wheat all not to be had the poisoning phenomenon.The 50d preventive effect of this composition is all more than 90%.Concrete outcome is seen table 1.

Table 1

Wp: wetting powder.

Claims

1. a compound herbicide composition is characterized in that said composition comprises active ingredient isoproturon, alkynes grass ester and thifensulfuronmethyl, and the mass ratio between the three is 30～60: 1～10: 0.5～5.

2. composition according to claim 1 is characterized in that the mass ratio of active ingredient isoproturon, alkynes grass ester and thifensulfuronmethyl is 40～60: 2～10: 1～5.

3. composition according to claim 2 is characterized in that the mass ratio of active ingredient isoproturon, alkynes grass ester and thifensulfuronmethyl is 50～60: 2～8: 1～4.

4. composition according to claim 3 is characterized in that the mass ratio of active ingredient isoproturon, alkynes grass ester and thifensulfuronmethyl is 50～60: 3～7: 1～4.

5. composition according to claim 1 is characterized in that said composition also comprises acceptable auxiliary on the agricultural chemicals.

6. composition according to claim 1 is characterized in that acceptable auxiliary is processed solution, emulsion, wetting powder, suspension, pulvis, soluble powder, granule, suspended emulsion concentrate, solid pharmaceutical preparation or microcapsule formulation on active ingredient and the agricultural chemicals in the said composition.

7. composition according to claim 6, the mass content that it is characterized in that active component in the said preparation is 1%～90%.

8. the application of the described compound herbicide composition of claim 1 aspect control wheat paddock grassy weed.