阅读说明：本技术 一种二氯喹啉酸油悬浮剂除草剂制备方法及其应用 (Preparation method and application of quinclorac oil suspension herbicide ) 是由 毕立国 戴色琴 曹战强 杨文霞 李黎 成纯正 任建荣 刘晓勇 于 2019-10-17 设计创作，主要内容包括：本发明提供了一种二氯喹啉酸油悬浮剂除草剂制备方法及其应用,除草剂以质量分数计,由以下成分组成：二氯喹啉酸1％～30％、乳化剂10～20％,分散剂1～3％,复合增效剂10～20％,增稠剂0.5～3.0％,消泡剂0.1～0.5％,余量为油酸甲酯。与二氯喹啉酸可湿性粉剂相比,本发明采用二氯喹啉酸的油悬浮剂,在上述含量的组分的共同作用下,能够防除水稻田稗草,药效发挥速度快,对水稻安全。(The invention provides a preparation method and application of a quinclorac oil suspension herbicide, wherein the herbicide comprises the following components in parts by mass: 1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of thickener, 0.1-0.5% of defoamer and the balance of methyl oleate. Compared with quinclorac wettable powder, the invention adopts quinclorac oil suspending agent, under the combined action of the components with the contents, can prevent and kill barnyard grass in the paddy field, has high drug effect exerting speed and is safe to rice.)

1. The quinclorac oil suspension herbicide comprises the following components in parts by mass:

1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of thickener, 0.1-0.5% of defoamer and the balance of methyl oleate.

2. The quinclorac oil-suspension herbicide as claimed in claim 1, wherein the compound synergist is selected from any two or more of silicones, nonionics, fatty alcohol polyoxyethylenes, dioctyl sodium sulfosuccinate, isotridecanol polyoxyethylene ethers and anions;

the dispersing agent is selected from one or more of polycarboxylate, polysulfonate, alkylphenol polyoxyethylene polyoxypropylene ether and modified polycarboxylic acid.

3. The quinclorac oil-suspension herbicide as claimed in claim 2 wherein the synergist number is selected from one or more of BH-100, 1118, NP-10, Prime, 408, 806, 625, 170 and fast T;

the type of the dispersant is one or more selected from 3498D, 3472B-N, DT600 and D-600.

4. The herbicide of claim 1 wherein the emulsifier is selected from one or more of ethoxylated mixed fatty acids, phenethylphenol polyoxyethylenes, benzylphenol polyoxyethylenes, mixtures of polyester polymers with specialty emulsifiers, mixtures of specialty emulsifiers;

the thickening agent is selected from organic bentonite;

the defoaming agent is selected from silicone defoaming agents.

5. The herbicide as claimed in claim 4, wherein the emulsifier is selected from one OF VO/02N, OD18, OF-202, OF-3468 and OF-8712-70;

the type OF the organic bentonite is selected from OF-102;

the model of the defoaming agent is selected from DF-1398.

6. A process for preparing the quinclorac oil-suspensoid herbicide as claimed in any one of claims 1 to 5, comprising the steps of:

uniformly mixing 1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of organic bentonite, 0.1-0.5% of defoaming agent and the balance of methyl oleate, and sanding until the fineness of the material reaches D₉₈About 5.0 microns to obtain the quinclorac oil suspension herbicide.

7. The use of the herbicide as claimed in any one of claims 1 to 6 or the quinclorac oil-suspension herbicide prepared by the preparation method as claimed in claim 7 for controlling barnyard grass in paddy fields.

8. The use as claimed in claim 7, wherein the herbicide is applied to the rice in the 3-leaf 1-heart or 2-4-leaf stage of barnyard grass.

9. A method for removing barnyard grass in paddy fields, which is characterized in that the herbicide as claimed in any one of claims 1 to 5 or the quinclorac oil suspension herbicide prepared by the preparation method as claimed in claim 6 is applied.

10. The method of claim 9, wherein the dose of said application is 15-30 g/acre based on the mass of quinclorac.

Technical Field

The invention belongs to the technical field of herbicides, and particularly relates to a quinclorac oil suspending agent herbicide, a preparation method and application thereof.

Background

Disclosure of Invention

In view of the above, the present invention aims to provide a quinclorac oil suspension herbicide, a preparation method and applications thereof, wherein the quinclorac oil suspension herbicide has a good weeding effect.

The invention provides a quinclorac oil suspension herbicide which comprises the following components in parts by mass:

1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of thickener, 0.1-0.5% of defoamer and the balance of methyl oleate.

Preferably, the composite synergist is selected from any two or more of organic silicon, nonionic, fatty alcohol polyoxyethylene, dioctyl sodium sulfosuccinate, isomeric tridecanol polyoxyethylene ether and anions.

The dispersing agent is selected from one or more of polycarboxylate, polysulfonate, alkylphenol polyoxyethylene polyoxypropylene ether and modified polycarboxylic acid.

Preferably, the synergist dosage form number is selected from one or more of BH-100, 1118, NP-10, Prime, 408, 806, 625, 170, and fast T;

the type of the dispersant is one or more selected from 3498D, 3472B-N, DT600 and D-600

Preferably, the emulsifier is selected from one or more of ethoxy mixed fatty acids, phenethyl phenol polyoxyethylene, benzyl phenol polyoxyethylene, polyester macromolecules, special emulsifier mixture and special emulsifier mixture;

the thickening agent is selected from organic bentonite;

the defoaming agent is selected from silicone defoaming agents.

Preferably, the type OF the emulsifier is selected from one OF VO/02N, OD18, OF-202, OF-3468 and OF-8712-70;

the type OF the organic bentonite is selected from OF-102;

the model of the defoaming agent is selected from DF-1398.

The invention provides a preparation method of quinclorac oil suspension herbicide, which comprises the following steps:

uniformly mixing 1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of organic bentonite, 0.1-0.5% of defoaming agent and the balance of methyl oleate, and sanding until the fineness of the material reaches D₉₈The particle size is about 5 microns, and the quinclorac oil suspending agent herbicide is obtained.

The application of the quinclorac oil-suspended herbicide prepared by the herbicide or the preparation method in the technical scheme in preventing and killing barnyard grass in the paddy field.

Preferably, the herbicide is applied to the rice in the period of 3 leaves and 1 core or 2-4 leaves of barnyard grass.

The invention provides a method for removing barnyard grass in a paddy field, which applies the herbicide or the quinclorac oil suspension herbicide prepared by the preparation method in the technical scheme.

Preferably, the applied dosage is 15-30 g/mu based on the mass of quinclorac.

The invention provides a quinclorac oil suspension herbicide which comprises the following components in parts by mass: 1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of thickener, 0.1-0.5% of defoamer and the balance of methyl oleate. Compared with quinclorac wettable powder, the invention adopts quinclorac oil suspending agent, under the combined action of the components with the contents, can prevent and kill barnyard grass in the paddy field, has high drug effect exerting speed and is safe to rice. The experimental results show that: when the rice is in 3-leaf 1-core and barnyard grass 2-leaf period, 10% quinclorac OD is applied, and the application amount per mu is respectively as follows: 150g, 200g, 250 g and 300g, and weed poisoning symptoms can be seen in 3 days; the weed control effect reaches more than 85 percent; the rice is safe; the control effect on barnyard grass plants after 15 days is respectively 94.12%, 96.59% and 98.53%; after 30 days, the control effect on barnyard grass plants is 88.76 percent, 90.11 percent, 92.32 percent and 96.24 percent respectively; the fresh weight control effect is 93.00%, 93.74%, 95.97% and 96.56% respectively. Compared with the medicament 50% quinclorac WP with the dosage of 40g and 60g per mu, the control effect of the plants is only 69.35% and 73.89% 30 days after the medicament is applied, and the control effect of the fresh weight is 88.08% and 89.47% respectively.

The quinclorac oil suspension provided by the invention has a faster weeding action speed, takes effect 3 days after being applied, has the effect of preventing barnyard grass plants after 15 days to be about 90 percent, takes effect 7 days after being applied as a contrast agent quinclorac wettable powder, and has the effect of preventing barnyard grass plants after 15 days to be about 70 percent. The quinclorac oil suspension has higher weeding efficiency, the plant control effect is 15 to 30 days when the effective component is half of that of the wettable powder, and the fresh control effect is obviously better than that of the wettable powder after 30 days; under the condition of the same dosage of the effective components, the treatment effect of the dispersible oil suspending agent is obviously better than that of wettable powder. The result shows that the drug effect of the dispersible oil suspending agent prepared by the quinclorac is obviously improved compared with that of wettable powder.

Detailed Description

The invention provides a quinclorac oil suspension herbicide which comprises the following components in parts by mass:

1-30% of quinclorac, 10-20% of emulsifier, 1-3% of dispersant, 10-20% of composite synergist, 0.5-3.0% of thickener, 0.1-0.5% of defoamer and the balance of methyl oleate.

In the present invention, the composite synergist is preferably selected from any two or more of silicone, nonionic, fatty alcohol polyoxyethylene, dioctyl sodium sulfosuccinate, isotridecyl alcohol polyoxyethylene ether and anion, and more preferably selected from any two or more of silicone synergist BH-100, nonionic synergist 1118, fatty alcohol polyoxyethylene synergist NP-10, silicone synergist Prime, dioctyl sodium sulfosuccinate synergist T, isotridecyl alcohol polyoxyethylene ether synergist 170, silicone synergist 806, silicone synergist 408 and anion synergist 625. In a specific embodiment, the composite synergist is a composite of a silicone synergist BH-100 and a nonionic synergist 1118 in a mass ratio of 1: 2; or compounding the fatty alcohol polyoxyethylene synergist and the nonionic synergist 1118 in a mass ratio of 1: 2; or compounding the organic silicon synergist Prime and the dioctyl sodium sulfosuccinate synergist in a mass ratio of 1: 10; or the organosilicon synergist 408 and the isomeric tridecanol polyoxyethylene ether synergist 170 in the mass ratio of 1:3 are compounded; or a combination of the silicone synergist 806 and the anionic synergist 625 in a mass ratio of 3: 10.

In the invention, the emulsifier is preferably one or more selected from ethoxy mixed fatty acids, phenethyl phenol polyoxyethylene, benzyl phenol polyoxyethylene, polyester macromolecule and special emulsifier mixture, and special emulsifier mixture.

The type OF the emulsifier is selected from one OF VO/02N, OD18, OF-202, OF-3468 and OF-8712-70;

in the present invention, the dispersant is preferably one or more types of polycarboxylate dispersants, polysulfonates, alkylphenol polyoxyethylene polyoxypropylene ether dispersants, and modified polycarboxylate dispersants; more preferably one or more selected from the group consisting of models 3498D, 3472B-N, DT600 and D-600. The thickener is preferably selected from organic bentonite; more preferably selected from the organobentonites OF type OF-102. The defoamer is preferably selected from silicone based defoamers, more preferably from type DF-1398 defoamer.

In the invention, the herbicide comprises 1-30% of quinclorac, preferably 10-30%; in particular embodiments, quinclorac comprises 10%, 15%, 20% or 30% of the herbicide.