Straw-based drug liquid controlled release agent and preparation method thereof

A slow-release agent and straw technology, applied in the fields of botanical equipment and methods, biocides, biocides, etc., can solve the problems of low adsorption capacity of pesticide slow-release agents, harsh reaction conditions, and many by-products, etc. The effect of resource utilization, low price, and pollution reduction

Inactive Publication Date: 2013-12-25
黄山市迎客松生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of harsh reaction conditions and many by-products in the preparation technology of the existing medicinal liquid slow-release agent; the problem of low adsorption of the pesticide slow-release agent and narrow application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation and Application of Example 1 Straw-based Liquid Sustained-release Agent

[0032] Crush corn stalks into particles with a particle size of 20nm, then mix 1% clay, 2% diatomaceous earth, 0.01% water and 0.5% β-cyclodextrin into the stalks, stir thoroughly, and then Add the mixture to a granulator to produce solid particles with a particle size of 0.001mm, and then load a layer of PE film with a thickness of about 10nm on the surface of the solid particles. The loaded organic film covers 55% of the particle area of ​​the particles. Finally, the material was dried at 40°C for 12 hours to obtain the finished product. The prepared straw-based slow-release agent was soaked in the plant growth promoter for 1-2 hours, drained, and then sprayed in the farmland. It was observed that the slow-release agent was more evenly distributed on the surface of the crops. After testing, the plant growth promoter The release time can reach 55d.

Embodiment 2

[0033] Example 2 Preparation and Application of Straw-based Liquid Sustained-release Agent

[0034] Crush wheat straw into particles with a particle size of 25nm, then mix 1.5% clay, 2% diatomaceous earth, 0.01% water and 0.5% β-cyclodextrin into the straw, stir thoroughly, and then Add the mixture to the granulator to produce solid particles with a particle size of 0.002mm, and then load a PC film with a thickness of about 15nm on the surface of the solid particles, and the loaded organic film covers 98% of the particle area of ​​the particles. Finally, the material was dried at 40°C for 12 hours to obtain the finished product. Soak the prepared straw-based slow-release agent in the bird repellant for 1-2 hours, remove and drain, and then spray it on the farmland. Observation shows that the slow-release agent is relatively uniformly distributed on the surface of the crops. After testing, the release of the bird repellant The time can reach 45d.

Embodiment 3

[0035] Example 3 Preparation and Application of Straw-based Liquid Sustained-release Agent

[0036]The rice straw was crushed into particles with a particle size of 50nm, and then mixed with 1.5% clay, 2.5% diatomaceous earth, 0.015% water and 0.7% β-cyclodextrin into the straw, fully stirred, and then Add the mixture to a granulator to produce solid particles with a particle size of 0.0015 mm, and then load a layer of PE film with a thickness of about 18 nm on the surface of the solid particles. The loaded organic film covers 78% of the particle area of ​​the particles. Finally, the material was dried at 50°C for 12 hours to obtain the finished product. The prepared straw-based slow-release agent was soaked in cyhalothrin for 1-2 hours, drained, and then sprayed on the farmland. It was observed that the slow-release agent was more evenly distributed on the surface of the crops, and the release of cyhalothrin was detected. The time can reach 35d.

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PUM

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Abstract

The invention discloses a straw-based drug liquid controlled release agent and a preparation method thereof. The preparation method comprises following steps: agricultural straw is smashed to be powder with a particle size of 10 to 100nm; and the straw powder is uniformly mixed with clay, diatomite, water and beta-cyclodextrin; the mixture is delivered into a pelletizer so as to obtain particles with a particle size of 0.001 to 0.01mm; and the surface of the particles is coated with a layer of organic membrane, and then the particles are dried for 12h at a temperature of 40 to 60 DEG C so as to obtain the finished products of the straw-based drug liquid controlled release agent. When the particulate controlled release agent is immersed in drug liquid such as pesticide, growth promoter and insect repellant, drug molecules will adsorb on the solid particles. After adsorption, if the controlled release agent is sprayed on crops, the controlled release agent will adhere to plant hairs and leaves so as to realize target position fixed effect, and the drug liquid will be released gradually because of the effects of factors such as time, rainwater leaching, and accumulated temperature. The straw-based drug liquid controlled release agent is suitable for slow release of a plurality of pesticides, and is capable of increasing utilization rate of the pesticides greatly, and reducing environment pollution caused by residual carriers.

Description

technical field [0001] The invention relates to a medicinal liquid slow-release agent with straw as the main body and a preparation method thereof. Background technique [0002] With the development of the economy, the population continues to grow. However, the aggravation of land desertification and the acceleration of urbanization have reduced the area of ​​arable land in our country, which requires human beings to continuously develop, produce, and use high-efficiency chemicals (such as pesticides, herbicides, production accelerators, Bird repellant, etc.) to increase the yield of crops to alleviate the above contradictions. [0003] Most of the chemical pesticides are toxic and harmful substances. In the traditional pesticide application methods, only a small amount of pesticides can really exert the effect of preventing and controlling crop yield reduction, so the utilization rate is very low. Most of the residual pesticides (about 60-90%) will pass through the rainfal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N53/08A01N51/00A01P21/00A01P17/00A01P13/00
Inventor 李丰伯万顺利杜继龙李晓毓殷汉峰
Owner 黄山市迎客松生物科技有限公司
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