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Biological pesticide composition and its preparation method and use

A pesticide composition and biological pesticide technology, applied in the field of pesticides, can solve problems such as restricting the sustainable development of agriculture, and achieve the effects of easy artificial cultivation, abundant raw material resources and stable performance

Inactive Publication Date: 2008-08-20
SHANDONG ZEHE AGRI CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, chemical pesticides have been used for half a century, and the resistance of pests has increased by dozens of times, which has greatly restricted the sustainable development of my country's agriculture.

Method used

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  • Biological pesticide composition and its preparation method and use
  • Biological pesticide composition and its preparation method and use
  • Biological pesticide composition and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] B) Preparation method of the composition

[0038] The pesticide composition of the present invention can be prepared by mixing commercially available scopolamine, hyoscyamine, atropine, nicotine and veratrine with a carrier in a certain proportion.

[0039] In view of Datura, tobacco, hellebore and other raw material resources are very rich, in a preferred embodiment of the present invention, raw materials such as Datura, tobacco leaf stem, leaf scraps, hellebore can be extracted with organic solvents, and then The method of filtration, concentration and purification is used to obtain Datura alkaloids, nicotine, and veratrine, and then the above-mentioned effective substances and carriers are compounded in a certain proportion to obtain the pesticide composition of the present invention.

[0040] C) application

[0041]The composition and method described herein can be used to protect economic crops such as vegetables, melons and fruits, flowers, tea leaves, forest tre...

example 1

[0046] Extraction process of datura total alkaloids

[0047] Each of the following extraction methods was performed separately.

[0048] 1) Add 95% ethanol to the coarse powder of Datura datura (white flower) and reflux at 40°C for 3×lh / time, recycle the ethanol to a concentrated solution (the ratio of solid to liquid is 1:2), wash with chloroform after acidification to remove fat-soluble impurities , (acidification with 0.5mol / l sulfuric acid aqueous solution), the acid aqueous solution obtained is neutralized to pH9 with sodium carbonate and then extracted with chloroform, and the extract reclaims chloroform to dryness to obtain oily datura total alkali.

[0049] 2) Datura (seed) coarse powder plus (60-90) petroleum ether to degrease. Add 95% ethanol to reflux at 40°C for 3×lh / time for the degreased datura coarse powder, recover the ethanol until the concentrated solution is an extract, add water to dissolve, then let it stand for precipitation, take the supernatant and add...

example 2

[0052] Example 2. Extraction of nicotine (nicotine)

[0053] 1) Soak tobacco chips or coarse lime powder in water for 2h, decoct for 3*2h / time, then concentrate the decoction until the ratio of material to liquid is 1:1, add DMSO after cooling, reflux at 40°C for 2*1h, and then filter. The filtrate is recovered. Concentrate under reduced pressure in vacuo to recover dimethyl sulfoxide to paste.

[0054] 2) Soak tobacco chips or coarse powder in cold lime water for 2 hours, reflux in 95% ethanol for 1.5 hours at 40°C, add 5 times the amount of 95% ethanol for reflux extraction for 1 hour, filter, and prepare the liquid medicine for later use. Add 5 times the amount of 60% ethanol to the dregs, reflux and extract for 0.5h, filter, discard the dregs, combine the second medicinal solution, recover the ethanol until it has no alcohol smell, centrifuge to take the supernatant, and extract with absolute ethanol for 3*30min / Second, recover ethanol to dryness.

[0055] 3) Soak toba...

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Abstract

A vegetative composite agricultural chemical features that it contains tropane meteloidine (0.5-6 Wt%), nicotine (0.5-20), veratrine (0.2-10) and carrier. It is prepared by mixing them proportionally. Its application is also disclosed. Its advantages are broad spectrum, high insecticiding and bactericide effect and quickly taking its effect.

Description

(1) Technical field [0001] The present invention relates to the field of pesticides, in particular, the present invention relates to a botanical pesticide composition, a preparation method and application of the composition. (2) Background technology [0002] my country is a big agricultural country, and so far, artificially synthesized chemical pesticides that are not found in nature are still widely used. Since there is no corresponding microbial group in nature, pesticide residues cannot be degraded, polluting land, water sources and the environment. Pesticide residues enter humans and animals through the food chain and induce various diseases. Furthermore, chemical pesticides have been used for half a century, and the resistance of pests has increased by dozens of times, which has greatly restricted the sustainable development of agriculture in our country. [0003] Therefore, there is still an urgent need in the art for a novel biopesticide composition that is harmles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/00A01P3/00A01N43/40A01N65/42A01N65/38
CPCY02A50/30
Inventor 张顺忠赵廷发
Owner SHANDONG ZEHE AGRI CHEM PROD
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