Metamifop and butachlor-based composite herbicide for rice

A technology of fenpyramid and compound herbicide, which is applied in the field of pesticides, can solve problems such as unfavorable long-term and healthy development of agriculture, endangering the ecology and environment of paddy fields, and increasing the input cost of rice production.

Inactive Publication Date: 2021-07-06
安徽海日农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the heavy metering of herbicides, weeds are becoming more and more resistant, which makes the application amount of herbicides increase year by year, which virtually increases the production input cost of rice. On the other hand, the heavy metering of pesticide application The amount is also harmful to the ecology and environment of the paddy field, and the long-term and healthy development of agriculture will not be used

Method used

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  • Metamifop and butachlor-based composite herbicide for rice
  • Metamifop and butachlor-based composite herbicide for rice
  • Metamifop and butachlor-based composite herbicide for rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The supramolecular sol-gel is made through the following steps:

[0036] Step A: Add phthalic anhydride and N, N'-dimethyl-1,3-propanediamine into a three-necked flask with a stirrer and a thermometer, then add ethanol to dissolve it completely, and then place the three-necked flask Place in an oil bath, heat to 85°C, and reflux for 11h, then lower to room temperature, transfer the solution to a container, place in an oven and dry under vacuum at 35°C to obtain intermediate product 1, wherein phthalic anhydride, N, N'-dimethyl-1,3-propanediamine and ethanol are used in a ratio of 0.1mol:0.1mol:150mL;

[0037] Step B: Add the intermediate product 1 and pentaerythritol obtained in step A into a four-necked flask, mix evenly, then add p-toluenesulfonic acid, heat to 135° C., stir and react at a constant speed of 300 r / min under nitrogen protection for 2 h, in Reaction under reduced pressure at -0.08MPa for 2 hours to finally obtain a dendritic amide, wherein the amount ra...

Embodiment 2

[0040] The supramolecular sol-gel is made through the following steps:

[0041] Refer to the preparation steps A-C in Example 1, but in step A, the dosage ratio of phthalic anhydride, N,N'-dimethyl-1,3-propylenediamine and ethanol is 0.1mol:0.11mol:170mL In step B, the consumption ratio of intermediate product 1, pentaerythritol, p-toluenesulfonic acid is 0.04mol:0.013mol:0.04g; In step C, the consumption of dendritic amide, sodium fluoride, adipic acid and aluminum oxide The ratio is 0.011mol:0.01g:0.02mol:0.012g.

Embodiment 3

[0043] The supramolecular sol-gel is made through the following steps:

[0044] Referring to the preparation steps A-C in Example 1, but in step A, the dosage ratio of phthalic anhydride, N,N'-dimethyl-1,3-propanediamine and ethanol is 0.1mol:0.12mol:200mL In step B, the consumption ratio of intermediate product 1, pentaerythritol, p-toluenesulfonic acid is 0.04mol:0.015mol:0.06g; In step C, the consumption of dendritic amide, sodium fluoride, adipic acid and aluminum oxide The ratio is 0.012mol:0.015g:0.02mol:0.015g.

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Abstract

The invention discloses a metamifop and butachlor-based composite herbicide for rice, belongs to the technical field of pesticides, and aims to solve the problems that the dosage of an existing herbicide is increased year by year and the drug resistance of weeds is delayed. The composite herbicide is prepared from the following raw materials in parts by weight: 1 to 20 parts of metamifop, 20 to 60 parts of butachlor, 5 to 30 parts of supramolecular sol-gel, 1.5 to 16.5 parts of methyl oleate, 5.5 to 15 parts of an emulsifier and 0 to 3.5 parts of organic bentonite. According to the invention, phthalic anhydride, N, N'-dimethyl- 1, 3-propanediamine and pentaerythritol are utilized as raw materials to prepare tree-shaped amide; four amino groups in the tree-shaped amide are reacted with carboxyl groups in adipic acid to form a hyperbranched supramolecule; and loading and slow release on metamifop and butachlor in the supramolecule structure is performed due to existence of a special hydrophobic cavity in the supramolecule structure. The pesticide application amount is reduced and the generation of pesticide resistance of weeds is slowed down.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a compound herbicide for rice based on fenpyramid and butachlor. Background technique [0002] Mefenacetamide is an inhibitor of acetyl-CoA carboxylase, which can inhibit the synthesis of fatty acids in plants. Within a few days of using the drug, the leaves of sensitive species will appear chlorotic and inhibit growth. It can prevent and control most annual grass weeds. It is different from most The difference of this type of herbicide is that fenpyramid is safe for rice and can effectively control the main weeds in rice fields, such as barnyardgrass, stephenia, crabgrass and goosegrass. It is also low-toxic and relatively safe for the ecological environment. Wide miscibility, can be mixed with most herbicidal ingredients. [0003] Butachlor is a selective pre-emergence herbicide, mainly used for the control of annual grass weeds and some broad-leaved weeds in di...

Claims

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Application Information

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IPC IPC(8): A01N43/76A01N37/26A01N25/10A01N25/04A01P13/00C08G69/26C08G69/28
CPCA01N25/04A01N25/10A01N37/26A01N43/76C08G69/26C08G69/28
Inventor 熊言华汪峰
Owner 安徽海日农业发展有限公司
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