Weeding composition, and preparation method and application thereof

The technology of a herbicidal composition and production method, which is applied in the field of herbicidal composition and its production and application, can solve the problems of poor control effect and unsatisfactory control effect on grass weeds, and achieve delay of resistance, reduction of dosage, environmental protection safe effect

Inactive Publication Date: 2012-08-15
哈尔滨利民农化技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pretilachlor is mainly used to control gramineous weeds in rice fields, and its control effect on broad-leaved weeds and Cyperaceae weeds is not ideal; while oxadiazone has obvious effects on broad-leaved weeds and Cyperaceae weeds. Poor control effect on grass weeds

Method used

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  • Weeding composition, and preparation method and application thereof
  • Weeding composition, and preparation method and application thereof

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specific Embodiment approach 1

[0009] Specific embodiment one: the herbicidal composition of this embodiment is made up of pretilachlor, oxadiazone and adjuvants; wherein the weight ratio of pretilachlor and oxadiazone is 20~70:15~50; pretilachlor and oxadiazone The weight ratio of the total weight of ketone to auxiliary agent is 40~50:50~60; Said auxiliary agent consists of 2~3 parts of emulsifier, 3~5 parts of dispersant, 0.1~0.2 part of thickener, 0.1-0.2 parts of stabilizer, 0.5-2 parts of antifreeze, 0.3-0.8 parts of penetrant and 45-50 parts of water, wherein the emulsifier is any of alkylphenol polyoxyethylene ether and sodium lauryl sulfate One or a mixture of two of them, the dispersant is any one of NNO (sodium methylene biscarbasulfonate), sodium lignin sulfonate, or a mixture of two of them, the thickener is xanthan gum, stable The agent is sodium benzoate, the antifreeze agent is glycerin, and the penetrating agent is organic silicone.

specific Embodiment approach 2

[0010] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the weight ratio of pretilachlor to oxadiazone is 30-60:20-40. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Embodiment 3: This embodiment is different from Embodiment 1 in that the weight ratio of pretilachlor to oxadiazone is 50:30. Others are the same as in the first embodiment.

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Abstract

The invention relates to a weeding composition, and a preparation method and application thereof. The weeding composition is capable of reducing the use amount of single-item weedicide and delaying target weed resistance and is wide in phytocidal range. The weeding composition is composed of pretilachlor, oxadiazon and an additive. The preparation method comprises the following steps of: 1, weighing the pretilachlor and the oxadiazon according to the weight ratio of (20-70):(15-50), then putting the pretilachlor and the oxadiazon into a high-shear emulsifying kettle, and putting the additive into the high-shear emulsifying kettle to shear so as to obtain a mixture; and 2, grinding the mixture through a sand mill, and pumping the mixture into a finished product storage tank, so that preparation of the weeding composition is completed. The weeding composition is used for preventing and weeding annular gramineous weeds, broad leaf weeds and Cyperaceae weeds in rice transplanting fields. The weeding composition disclosed by the invention is capable of reducing the use amount of the single-item weedicide and delaying the target weed resistance, is wide in phytocidal range and safe to crops and environment, and is used in the field of chemical weeding.

Description

technical field [0001] The invention relates to a herbicidal composition and its preparation method and application. Background technique [0002] Chemical weeding is one of the most effective agricultural techniques in modern agriculture and plays an important role in agricultural production. With the advancement of the rural cooperative process, chemical weeding technology has increasingly shown its irreplaceable role. Long-term single use of a herbicide will cause the target weeds to develop resistance to it, and eventually the herbicide will lose its effect on the weeds. Even if the dosage is increased, the expected herbicidal effect cannot be achieved. Due to the increased dosage, not only the phytotoxicity of the crops, but also a great impact on the ecological environment. Therefore, scientifically and rationally mixing herbicides will become the best way to effectively control weeds in farmland in the future. Reasonable mixing of two or more herbicides can not on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/824A01N37/22A01P13/00
Inventor 张文华郑全军边疆高峰李艳华李婷婷
Owner 哈尔滨利民农化技术有限公司
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