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Rice direct seeding field mixed herbicide

A herbicide and rice technology, applied in the directions of herbicides and algaecides, biocides, biocides, etc., can solve the problems such as the use method, operation, and dosage are difficult to grasp, weeds cannot be controlled, and the herbicidal spectrum is not wide enough. , to achieve excellent rice safety, good herbicidal effect, and broad herbicidal spectrum.

Active Publication Date: 2008-11-26
燕化永乐(乐亭)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Penoxsulam and pyrazosulfuron alone have many disadvantages, the herbicidal spectrum is not wide enough, and some weeds cannot be controlled when the two herbicides are used alone, and the cost of using penoxsulam alone is high. When the mixture of these preparations is used, it is difficult to grasp the use method, operation and dosage, which will lead to wrong application and affect the rice.
The occurrence of barnyardgrass has increased greatly in recent years, the main reason is that herbicides commonly used in rice fields are ineffective against it
Penoxsulam has excellent control effect on barnyard grass, but penoxsulam has poor control effect on Moshangcai, Polygonum cloves and Channa saustrii
The combination of penoxsulam and pyrazosulfuron-methyl can complement each other to expand the weed control spectrum. For example, pyrazosulfuron can make up for the shortcomings of penoxsulam's low control effect on Moshangcai, Polygonum cloves and Channa saustrii

Method used

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  • Rice direct seeding field mixed herbicide
  • Rice direct seeding field mixed herbicide
  • Rice direct seeding field mixed herbicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1.0kg penoxsulam technical, 5.1kg pyrazosulfuron-methyl technical, 6kg sodium dodecylbenzenesulfonate, 6kg nonylphenol polyoxyethylene ether, 3kg epoxidized soybean oil, 1.5kg carboxymethyl Add cellulose, 2kg ethylene glycol, 0.5kg S-29 defoamer, 4kg ethanol, 35.45kg methyl oleate, and 35.45kg soybean oil into the reaction kettle together, stir for 2 hours, open the discharge valve at the bottom of the kettle, and inject the materials into Grinding in a sand mill, the fineness of the ground material reaches 98%, and the material is discharged after passing through a 325-mesh standard sieve, and the material is then put into a high-shear emulsification kettle, and the herbicide composition oil suspension of the present invention is obtained after emulsification .

Embodiment 2

[0036] Mix 1.0kg penoxsulam technical, 6.2kg pyrazosulfuron technical with 12kg sodium dodecylbenzenesulfonate, 10kg sodium lignosulfonate, 2kg polyvinyl alcohol, 2kg lauryl polyoxyethylene ether , 33.4kg of kaolin and 33.4kg of bentonite were added to the cone mixer and mixed for more than 2 hours. The mixed material was added to the jet mill for crushing, and the crushed material was then added to the cone mixer and mixed for 2 hours. hour, the fineness of the mixed material reaches 98% and passes through a 325-mesh standard sieve to obtain a wettable powder. Then put the wettable powder and 20kg of purified water into the kneader and knead at the same time to make a plastic material, and finally put the material into an extrusion granulator for granulation, and the granulated product is processed in an oven at 54 ° C. Drying, sieving the dried material with standard sieves of 10 mesh and 60 mesh, and taking the material between the two sieves to obtain water-dispersible gra...

Embodiment 3

[0038] Mix 1.2kg of penoxsulam original drug, 3.5kg of pyrazosulfuron-methyl original drug with 10kg of sodium dodecylbenzenesulfonate, 8kg of sodium lignosulfonate, 4kg of polyvinyl alcohol, and 5kg of nonylphenol polyoxyethylene Ether, 34.15kg kaolin, 34.15kg bentonite, put them together into the cone mixer and mix for more than 2 hours, put the mixed material into the jet mill for crushing, and then add the crushed material into the cone mixer for mixing After 2 hours, the mixed material had a fineness of 98% and passed through a 325-mesh standard sieve to obtain a wettable powder.

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Abstract

The invention pertains to the technical field of pesticides and relates to a mixed herbicide used in direct-seeding rice fields. The mixed herbicide is characterized in that the mixed herbicide contains penoxsuam and pyrazosulfuron-ethyl and the effective components of the mixed herbicide are as follows according to percentage by weight: 0.1 percent to 50 percent of the penoxsuam and 0.2 percent to 50 percent of the pyrazosulfuron-ethyl. The mixed herbicide can be prepared into an oil-based suspending agent, a water dispersible granule and a wettable powder. The mixed herbicide is used for preventing and weeding weeds in the direct-seeding rice fields with obvious weeding effect, is safe for rice and has wide extension in weeding and obvious synergism.

Description

technical field [0001] The invention belongs to chemical pesticides, in particular to a compound herbicide for controlling weeds in direct-seeded rice fields. Background technique [0002] According to the report of the Food and Agriculture Organization of the United Nations, the total number of weeds in the world is about 50,000, of which 8,000 are farmland weeds, and about 250 species are harmful to major food crops. It can be seen that the harm of weed damage is becoming more and more serious and has become an important factor affecting crop yield. The use of chemical herbicides can not only save a large amount of labor and increase labor productivity, but also remove weeds between seedlings that are difficult to remove by general machinery, further improve mechanization, and improve traditional cultivation methods. Therefore, the research and application of chemical herbicides has attracted more and more attention. According to the statistics of relevant departments of ...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N47/36A01P13/00
Inventor 蒋勤军王明康孙长贵杨会营闫玉强王晓辉刘晓娇
Owner 燕化永乐(乐亭)生物科技有限公司
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