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Method for treating rice brown spot disease on basis of capsaicin

A technology of flax leaf spot and capsaicin, applied in botany equipment and methods, chemicals for biological control, animal repellants, etc., can solve the problems of poor control effect, large environmental pollution, and high investment. Achieve the effect of eliminating losses, good control effect and quick effect

Inactive Publication Date: 2018-09-21
YIELEAD RICE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention: the existing chemical prevention and control means of rice flax leaf spot has great environmental pollution, high toxicity, and the control effect is getting worse year by year, and the consumption is large and the input is high.

Method used

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  • Method for treating rice brown spot disease on basis of capsaicin
  • Method for treating rice brown spot disease on basis of capsaicin
  • Method for treating rice brown spot disease on basis of capsaicin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: The preferred concentration of organosilicon polyoxyethylene ether in the treatment of rice flax leaf spot

[0057] 1. To prepare capsaicin solution, the steps are as follows:

[0058] (1) Accurately weigh 10 mg of capsaicin crystals and 2 mL of analytically pure DMSO to fully shake and dissolve;

[0059] (2) Accurately measure 999mL double-distilled water, add the above-mentioned capsaicin DMSO solution into double-distilled water and fully stir and mix;

[0060] (3) Accurately weigh the silicone polyoxyethylene ether respectively, heat the solution and the silicone polyoxyethylene ether in step (2) to 55° C., and use a magnetic stirrer to stir the silicone polyoxyethylene ether into the step ( 2) In the solution in , the stirring speed is 800rpm, so that the concentration of silicone polyoxyethylene ether is 0, 0.1, 0.5, 1, 5, 10% (wt);

[0061] (4) After the silicone polyoxyethylene ether is completely added into the solution, keep the temperature at ...

Embodiment 2

[0074] Embodiment 2: the optimization of capsaicin solution spray times and frequency

[0075] The specific operation steps are as follows:

[0076] 1. To prepare capsaicin solution, the steps are as follows:

[0077] (1) Accurately weigh 10 mg of capsaicin crystals and 2 mL of analytically pure DMSO to fully shake and dissolve;

[0078] (2) Accurately measure 999mL double-distilled water, add the above-mentioned capsaicin DMSO solution into double-distilled water and fully stir and mix;

[0079] (3) Weigh 5g of silicone polyoxyethylene ether, heat the solution and silicone polyoxyethylene ether in step (2) to 55°C, and use a magnetic stirrer to stir the silicone polyoxyethylene ether into the step ( 2) In the solution in , the stirring speed is 800rpm, so that the concentration of silicone polyoxyethylene ether is 0.5% (wt);

[0080] (4) After the silicone polyoxyethylene ether is completely added into the solution, keep the temperature at 55°C, continue to stir at the sam...

Embodiment 3

[0093] Embodiment 3: Capsaicin is tested and the result is as follows to the therapeutic effect of rice flax leaf spot:

[0094] Follow the steps below to implement:

[0095] 1. To prepare capsaicin solution, the steps are as follows:

[0096] (1) Accurately weigh 3, 5, 10, and 15 mg of capsaicin crystals respectively, and fully shake and dissolve 2 mL of analytically pure DMSO;

[0097] (2) Accurately measure 999mL double-distilled water, add the above-mentioned capsaicin DMSO solution into double-distilled water and fully stir and mix;

[0098] (3) Weigh 5g of silicone polyoxyethylene ether, heat the solution and silicone polyoxyethylene ether in step (2) to 55°C, and use a magnetic stirrer to stir the silicone polyoxyethylene ether into the step ( 2) In the solution in , the stirring speed is 800rpm, so that the concentration of silicone polyoxyethylene ether is 0.5% (wt);

[0099] (4) After the silicone polyoxyethylene ether is completely added into the solution, keep t...

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Abstract

The invention discloses a method for treating rice brown spot diseases on the basis of capsaicin, and belongs to the technical field of rice disease prevention and treatment. The method comprises thefollowing key steps that rice plants suffered from rice brown spot diseases are sprayed once every two days by a capsaicin solution with the concentration being 3 to 15mg / L; the spraying operation iscontinuously performed for four times; the cure rate can reach 83.4 percent. The method has the advantages that the environment is protected; no pollution exists; no environmental toxicity exists; theoperation is simple and convenient; the dosage is small; the effect taking is fast; higher inhibition ratio is realized on the brown spot diseases in vitro and vivo; wide application prospects can beprovided for pesticide based on the capsaicin.

Description

technical field [0001] The invention relates to the technical field of rice disease prevention and control, in particular to a method for treating rice flax leaf spot based on capsaicin. Background technique [0002] Capsaicin is a vanilla amide alkaloid widely present in the Solanaceae capsicum plants, especially red peppers (chilipepper). For mammals including humans, capsaicin is an irritating substance, and once the tissues of the body come into contact with this ingredient, a strong burning sensation will be produced. [0003] In 1816, P.A.Bucholz first isolated capsaicin molecule in crystalline state, and 30 years later L.T.Thresh isolated this substance again and named it capsaicin (base). Until 1919, the structure of capsaicin was partially elucidated by E.K.Nelson. On this basis, E.Spath and F.S.Darling first artificially synthesized capsaicin molecules in 1930. Since then, Japanese chemists S.Kosuge and Y.Inagaki have isolated a series of substances with similar ...

Claims

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Application Information

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IPC IPC(8): A01N37/18A01P3/00
CPCA01N37/18
Inventor 乔保建乔琪任代胜夏祥华付锡江陶元平彭冲
Owner YIELEAD RICE IND
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