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Herbicide dosage reduced prevention and control method for controlling crop smothering in whole growth period of rice transplanted by rice transplanter through one time pesticide spraying

A whole growth period, herbicide technology, applied in the field of pesticides, can solve the problems of difficult to effectively control rice weeds, poor control effect, drug resistance, etc. Effect

Active Publication Date: 2018-05-11
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: To solve the problem of pesticide resistance to farmland weeds in the prior art, the control effect of single use is poor, and it is difficult to effectively control the damage of weeds in the whole growth period of machine-transplanted rice with one use. Environmental pressure to reduce pesticide residues

Method used

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  • Herbicide dosage reduced prevention and control method for controlling crop smothering in whole growth period of rice transplanted by rice transplanter through one time pesticide spraying
  • Herbicide dosage reduced prevention and control method for controlling crop smothering in whole growth period of rice transplanted by rice transplanter through one time pesticide spraying
  • Herbicide dosage reduced prevention and control method for controlling crop smothering in whole growth period of rice transplanted by rice transplanter through one time pesticide spraying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: 20% promasulfuron-cyhalofop-ethyl oil suspension concentrate

[0027] The components of the pesticide composition containing promasulfuron-methyl and cyhalofop-methyl are: 5% promethazone-methyl, 15% cyhalofop-methyl, 5% phenethylphenol polyoxyethylene ether, lignin sulfonate 8% Sodium Oleate, 5% Epoxidized Soybean Oil, 5% Organic Bentonite, 100% Methyl Oleate.

[0028] After adsorption and mixing of promethazone-methyl and filler, add the other above-mentioned materials (except organic bentonite) into the reactor mixer together, stir evenly, inject the materials into the multi-stage sand mill for grinding, and the ground materials are fine 98% of the material passes through 1-5μm, and the material is put into a high-shear emulsification kettle together with the pre-dissolved organic bentonite. After emulsification, it can be made into 20% promasulfuron-cyhalofop-ethyl oil suspension agent.

Embodiment 2

[0029] Example 2: 30% promasulfuron-cyhalofop-ethyl suspension concentrate

[0030] The components of the pesticide composition containing promasulfuron-methyl and cyhalofop-methyl are: 5% promethazone-methyl, 25% cyhalofop-methyl, 5% phenethylphenol polyoxyethylene ether, lignin sulfonate Sodium phosphate 8%, ethylene glycol 5%, magnesium aluminum silicate 2%, defoamer 0.5%, preservative 0.1%, xanthan gum 0.1%, water to 100%.

[0031] After adsorption and mixing of promethazone-methyl and filler, add the other above-mentioned materials (except xanthan gum) into the reactor mixer together, stir evenly, inject the materials into the multi-stage sand mill for grinding, and the ground materials Fineness of 98% passes through 1-5μm and then the material is discharged. The material is put into a high-shear emulsification kettle together with the pre-dissolved xanthan gum. After emulsification, it can be made into 30% promasulfuron-cyhalofop-ethyl suspending agent.

Embodiment 3

[0032] Example 3: 34% promasulfuron-cyhalofop-ethyl wettable powder

[0033] The components of the pesticide composition containing promasulfuron-methyl and cyhalofop-methyl are: 8% promasulfuron-methyl, 26% cyhalofop-methyl, 2% sodium lauryl sulfate, butylnaphthalenesulfonic acid Sodium 3%, Calcium Lignosulfonate 5%, Silica 5%, Kaolin to 100%.

[0034] After adsorption and mixing of promethazone-methyl filler, put it into the conical mixer together with other above-mentioned materials and mix evenly, and then pulverize through the jet mill, and then mix the pulverized materials through the conical mixer, and the fineness of the mixed material is 98% passed through a 325-mesh standard sieve to obtain 34% promasulfuron-cyhalofop-ethyl wettable powder.

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Abstract

The invention relates to a herbicide dosage reduced prevention and control method for controlling crop smothering in the whole growth period of rice transplanted by a rice transplanter through one time pesticide spraying. The method comprises the following steps that a pesticide composition containing propyrisulfuron and cyhalofop-butyl is sprayed for once in an appropriate period of 10-18 days after the rice is transplanted, and the mass ratio of the propyrisulfuron to the cyhalofop-butyl in the pesticide composition is 2-20:2-50. The method can effectively control the crop smothering in thewhole growth period of the rice transplanted by the rice transplanter through one time pesticide spraying, reduce the use of herbicides by 2-3 times, reduce the use of the herbicides by 30%-60%, savethe chemical costs and labor costs of weed prevention and control, reduce adverse effects of the pesticides on ecological environment, and has significant economic, ecological and social benefits; herbicide compositions with different targets are sprayed in the appropriate dosage and period, reduced dosage and enhanced effects of the pesticides, weed control under the condition of reduced pesticide spraying times and sustainable management of the crop smothering are achieved, service life of pharmaceuticals is prolonged, and the method has important significance for comprehensive management ofherbicide resistance.

Description

technical field [0001] The application belongs to the technical field of pesticides, and in particular relates to a herbicide reduction and weed control method for preventing and controlling weed damage in the whole growth period of machine-transplanted rice with one application of pesticides. Background technique [0002] The use of chemical herbicides is one of the important symbols of modern agriculture. However, in recent years, under the background of increasing herbicide usage and increasing environmental risks, the harm of weeds is still increasing year by year, posing a huge threat to agricultural production. At present, the control of weeds in paddy fields adopts the "one, two kills, three supplements" model, which does not address the unique characteristics of rice machine-transplanted seedlings such as transplanting small seedlings, wide row spacing, large seedling damage, and shallow water in the field. , herbicide application is large, high cost, unstable effic...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01N39/04A01P13/00
CPCA01N39/04A01N47/36
Inventor 王红春娄远来肖慰祖
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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