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Chelerythrine suspending agent and preparation method and application thereof

A technology of chelerythrine and suspending agent, which is applied in the direction of botanical equipment and methods, applications, fungicides, etc., to achieve the effects of improving adhesion, fine particle size, and less resistance to drugs

Active Publication Date: 2022-01-04
黑龙江省农业科学院植物保护研究所
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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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  • Chelerythrine suspending agent and preparation method and application thereof
  • Chelerythrine suspending agent and preparation method and application thereof
  • Chelerythrine suspending agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Screening of chelerythrine suspension formulation

[0028] (1) Selection of wetting and dispersing agent: Use the flow point method to measure the flow point of wetting and dispersing agent, and select the additive with good effect. 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: Wetting and dispersing agents Atlox4913, Dispersogen1494liq, and GenapolX080 with better flow points were selected. Through the measurement of fluidity, the basic formula with better effect was screened out. The results are shown in Table 2.

[0032] The fluidity measurement result of table 2 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 situation of heat storage and water precipitation, the ...

Embodiment 2

[0044] Embodiment 2: the preparation method of chelerythrine suspension concentrate

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

[0046] (2) Take the former medicine of chelerythrine according to the mass fraction, add in the material obtained in step (1), until the shear is uniform;

[0047] (3) Sand mill grinds and obtains material, and the rotating speed of sand mill is 2000r / min, and grinding time is 1h, and the particle size of material is D50=3.84, D90=10.22;

[0048] (4) Add xanthan gum to the material obtained in step (3), and shear to obtain chelerythrine suspension concentrate.

[0049]The quality identification of the chelerythrine suspension prepared in Example 2 shows that the suspension is orange-red, flowable, non-caking, and easy to measure the volume of ...

Embodiment 3

[0050] Embodiment 3: the application of chelerythrine suspension concentrate

[0051] Utilize the chelerythrine suspension concentrate prepared in Example 2 to spray the paddy rice 3-5 days before and after the heading stage, and spray twice altogether, and the interval between two sprays is 8-12 days, and the control effect is obvious. When the former drug dose of chelerythrine was 7.5ppm (200 times of dilution of the chelerythrine suspension), the chemical control effect was 45.2%; Alkali suspension concentrate is diluted 100 times), and the medicament control effect is up to 62.5%; It is higher than the control effect of 20% tricyclazole, a commonly used pesticide. It can be seen that the chelerythrine suspension concentrate has a good control effect on rice flax spot disease.

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Abstract

The invention discloses a chelerythrine suspending agent and a preparation method and application thereof, and belongs to the technical field of biological pesticides for vegetables. In order to find an environment-friendly, low-toxicity and high-efficiency prevention and treatment method for the rice flax spot disease, a suspending agent with the characteristics of fine particle size, high suspension rate, no dust and the like is obtained by compounding chelerythrine raw medicine, 4% of a dispersing agent Atlox4913, 2% of a wetting agent Genapol X080, 5% of glycerol, 0.5% of magnesium aluminum silicate, 0.1% of xanthan gum, 0.2% of Sag1522 and deionized water through mixing, shearing and grinding. The suspending agent is applied to prevention and treatment of the rice flaxseed spot, shows a good prevention and treatment effect, has the advantages of high efficiency, low toxicity, no pollution, easiness in degradation and no environmental pollution, and meets the requirements of green food development and agricultural sustainable development nowadays.

Description

technical field [0001] The invention relates to a chelerythrine suspension concentrate and a preparation method and application thereof, belonging to the technical field of biological pesticides. [0002] technical background [0003] Plant diseases seriously threaten global food security and ecosystems, and chemical pesticides play an important role. However, the harm caused by long-term repeated use of chemical pesticides has become more and more serious. 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 more and more attention has been paid to the research on plant secondary metabolites in the control of agricultural diseases and insect pests. Their chemical structures are diverse, and alk...

Claims

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Application Information

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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 黑龙江省农业科学院植物保护研究所
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