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A kind of chelerythrine suspension agent and its preparation method and application

A technology of chelerythrine and suspending agent is applied in the directions of botanical equipment and methods, application, fungicides, etc., to achieve the effects of not easy drug resistance, high suspension rate, and good control effect.

Active Publication Date: 2022-07-22
INST OF PLANT PROTECTION HEILONGJIANG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no precedent for the development of chelerythrine as a suspending agent for the prevention and treatment of flax spot disease in rice

Method used

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  • A kind of chelerythrine suspension agent and its preparation method and application
  • A kind of chelerythrine suspension agent and its preparation method and application
  • A kind of chelerythrine suspension agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: the screening of chelerythrine suspending agent formula

[0028] (1) Selection of wetting and dispersing agent: The flow point of wetting and dispersing agent is measured by flow point method, and the auxiliary agent with good effect is selected. The screening results are shown in Table 1.

[0029] Table 1 Pour point of different wetting and dispersing agents

[0030]

[0031] (2) Selection of basic formula: Select the wetting and dispersing agents Atlox4913, Dispersogen1494liq and GenapolX080 with better flow point. Through the determination of fluidity, the basic formula with better effect was screened out. The results are shown in Table 2.

[0032] Table 2 The fluidity measurement results of different formulations

[0033]

[0034]

[0035] According to the results shown in Table 2, 6# was selected as the basic formula.

[0036] (3) Selection of thickener: observe the fluidity of the sample and the condition of thermal storage and water sepa...

Embodiment 2

[0044] Embodiment 2: the preparation method of chelerythrine suspending agent

[0045] (1) prepare chelerythrine suspending agent according to the formula obtained in Example 1, weigh dispersant Atlox4913, wetting agent GenapolX080, glycerol, magnesium aluminum silicate and deionized water by mass fraction, and mix and shear;

[0046] (2) take by weighing the chelerythrine original drug according to mass fraction, add in the material obtained in step (1), until shearing is uniform;

[0047] (3) The material is obtained by grinding with a sand mill, the rotational speed of the sand mill is 2000r / min, the grinding time is 1h, and the particle size of the material is D50=3.84, D90=10.22;

[0048] (4) adding xanthan gum to the material obtained in step (3), and cutting to obtain a chelerythrine suspending agent.

[0049]The chelerythrine suspension agent prepared in Example 2 is subjected to quality identification, and the identification result shows that the suspension agent is ...

Embodiment 3

[0050] Example 3: Application of chelerythrine suspending agent

[0051] The chelerythrine suspension agent prepared in Example 2 was used to spray the rice 3-5 days before and after the heading stage. It was sprayed twice, and the interval between the two sprays was 8-12 days, and the control effect was obvious. When the original drug dose of chelerythrine is 7.5ppm (that is, diluting the chelerythrine suspending agent by 200 times), the control effect of the chemical is 45.2%; Alkaline suspending agent diluted 100 times), the chemical control effect is as high as 62.5%; when the original drug dose of chelerythrine is 30ppm (that is, the chelerythrine suspending agent is diluted 50 times), the chemical control effect is 77.3%, and the control effect is all The control effect of 20% tricyclazole is higher than that of the commonly used pesticide. It can be seen that the chelerythrine suspension agent has a good control effect on rice flax spot.

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Abstract

A chelerythrine suspension agent and a preparation method and application thereof belong to the technical field of vegetable biological pesticides. In order to find an environmentally friendly, low-toxic and efficient control method for rice flax spot disease, the celandine original drug, dispersant Atlox49134%, wetting agent GenapolX0802%, glycerol 5%, magnesium aluminum silicate 0.5%, Xanthan gum 0.1%, Sag15220.2% and deionized water are compounded, and a suspending agent with fine particle size, high suspension rate and no dust is obtained by mixing, shearing and grinding. The suspending agent is used in the prevention and treatment of rice flax spot disease, showing good control effect, and has the advantages of high efficiency, low toxicity, no pollution, easy degradation and no environmental pollution, which is in line with the development of green food and sustainable agricultural development. need.

Description

technical field [0001] The invention relates to a chelerythrine suspension agent and a preparation method and application thereof, belonging to the technical field of biological pesticides. [0002] technical background [0003] Plant diseases are a serious threat to global food security and ecosystems, and chemical pesticides play an important role. However, the harm caused by the long-term repeated use of chemical pesticides has intensified. Therefore, how to reduce the dependence on chemical pesticides and develop environmentally friendly botanical pesticides is a necessary measure for the sustainable development of agricultural economy, which has important ecological, social and economic benefits. [0004] Plants have always been regarded as a natural treasure house, and the research on plant secondary metabolites in the prevention and control of agricultural diseases and insect pests has attracted more and more attention. Their chemical structures are diverse, and alkal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/90A01N25/04A01P3/00
CPCA01N43/90A01N25/04
Inventor 韦庆慧宋伟丰李志勇潘亚清翟喜海李宝英焦占力李新民赵敏
Owner INST OF PLANT PROTECTION HEILONGJIANG ACAD OF AGRI SCI
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