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Weed control combination in use for paddy field

A herbicidal composition and paddy field technology, applied in the field of paddy field herbicides, can solve the problems of increasing dosage and frequency of application, damage of resistant weeds, etc.

Inactive Publication Date: 2007-04-25
杨卫东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term and large-scale application also causes changes in the distribution of weed communities, and the damage of resistant weeds is becoming more and more serious. The development of drug resistance is also gradually strengthening, forcing users to increase the dosage and frequency of application, which brings many problems to rice safety, production cost, control effect, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0011] Specific embodiment 1: The composition of the herbicidal composition according to this embodiment includes active ingredients mefenifen and oxyfluorfen at the same time, and the weight ratio of mefenifen and oxyfluorfen is (1-30): 1.

specific Embodiment approach 2

[0012] Specific embodiment two: the herbicidal composition of the present invention, the active ingredient is the amide herbicide mefenacet and the diphenyl ether herbicide oxyfluorfen, and also includes pesticide adjuvants, such as surfactants, wetting agent, diffusing agent and solid carrier, and their parts by weight are: 1 part of oxyflufen, 1-30 parts of mefenacet, 1-10 parts of surfactant, and 1-6 parts of diffusing agent , 0.1-5 parts of wetting agent, 1-50 parts of solid carrier.

[0013] The aforementioned surfactant can be α-olefin sulfonate, higher alcohol sodium sulfate, nonionic surfactant polyoxyethylene nonylphenyl ether, polyoxyethylene oleoyl ether, polyoxyethylene oleate, ethylene oxide One or more of alkane-propylene oxide copolymer, polyoxyethylene fatty acid ester, sorbitan monooleate, sorbitan monolaurate, styrylphenol polyoxyethylene polyoxypropylene ether.

[0014] In the above herbicidal composition, the diffusing agent is one or more of sodium lignos...

specific Embodiment approach 3

[0017] Specific embodiment three: the herbicidal composition of the present embodiment is a wettable powder formulation, and its production method is known: the herbicide active component mefenamide is mixed with oxyfluorfen in proportion, and then It is fully mixed with a surfactant, a wetting agent, a diffusing agent and a carrier in proportion, then pulverized to 44 μm, and then packaged. The preparation is a loose powder wettable powder.

[0018] The following is a formula of wettable powder: mefenacet 30g, oxyfluorfen 3g, sodium lignosulfonate 5g, polyoxyethylene oleoyl ether 3g, sodium lauryl sulfate 0.8g, kaolin 10g, Diatomaceous earth 20g.

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Abstract

A herbiciding composition for rice field contains mefenacet and oxyfluorfen. Its advantages are broad spectrum, high efficiency,and low toxin.

Description

Technical field: [0001] The invention belongs to the field of rice field herbicides. Background technique: [0002] With the development of agrochemical science and technology in China, herbicides in rice fields have been widely used for their labor-saving, time-saving and high-efficiency characteristics, and have become a powerful measure to increase rice production. At present, there are many herbicides for paddy fields in the world. Due to the limitation of herbicidal spectrum and duration, most of them are difficult to achieve the purpose of controlling all weeds with one application; single use of similar herbicides for a long time will also cause weeds to grow. Due to the succession of distribution and the enhancement of weed resistance, timely adjustment of herbicide targets and combination of two or more herbicides to form new herbicides can solve the above problems. [0003] Both mefenacet and oxyfluorfen are herbicide varieties that have been put into use at home ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/78
Inventor 杨卫东
Owner 杨卫东
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