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Biopesticide and preparation method thereof

A technology of biopesticides and extracts, applied in botany equipment and methods, chemicals for biological control, biocides, etc., can solve problems such as food safety, ecological balance destruction, environmental pollution, etc., to achieve convenient material collection, The effect of low toxicity and simple formula

Inactive Publication Date: 2011-11-23
王乃利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of traditional chemical pesticides has brought about a series of well-known problems such as environmental pollution, ecological balance destruction and food safety, and has brought many adverse effects on promoting the sustainable development of agricultural economy

Method used

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  • Biopesticide and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Take by weighing 1.0 kg each of Brucea javanica fruit and castor seeds, crush and grind them, soak at room temperature with 60% ethanol 10L respectively, filter and collect the filtrate, concentrate the filtrate to obtain 250g of Brucea javanica extract, castor bean Extract 220g, recover solvent simultaneously; Get each 100g of javanica javanica extract and castor bean extract and mix, add 3g osthole, mix uniformly, obtain biological pesticide of the present invention, after diluting with water, set aside.

Embodiment 2

[0028] Weigh 1.0 kg each of naturally dried Brucea javanica fruit and castor seeds, put them into an oil press to directly extract oil, then add 6L of 60% ethanol, stir, let stand, take the supernatant, concentrate respectively to obtain Brucea javanica extract 180g and castor bean extract 150g, reclaim solvent simultaneously; Get Brucea javanica extract and each 100g of castor bean extract mix, add 2g osthole, mix homogeneously, obtain biopesticide of the present invention, for subsequent use after diluting with water.

Embodiment 3

[0030] Take by weighing 1.0 kg each of Brucea javanica fruit and castor seeds, crush and grind them, soak at room temperature with 50% ethanol 10L respectively, filter and collect the filtrate, and concentrate the filtrate to obtain 220g of Brucea javanica extract, castor bean Extract 200g, recover solvent simultaneously; Get each 100g of javanica javanica extract and castor bean extract and mix, add 10g osthole, mix uniformly, obtain biological pesticide of the present invention, after diluting with water, set aside.

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Abstract

The invention provides a biopesticide, comprising a brucea fruit extract, a castor bean extract and an osthol, wherein the brucea fruit extract is 50-75% of ethanol extract of brucea fruits; and the castor bean extract is 50-75% of ethanol extract of castor seeds. The invention also provides a preparation method of the biopesticide, which comprises the steps of respectively weighing the brucea fruits and the castor seeds, rolling and grinding the brucea fruits and the castor seeds, extracting by using 50-75% ethanol, uniformly mixing the obtained brucea fruit extract and the obtained castor bean extract, adding the osthol to an obtained mixture and mixing the osthol and the mixture to obtain the biopesticide. The biopesticide provided by the invention has the advantages of simple prescription, simple preparation method, very strong insecticidal and molluscicidal effects and low toxicity for people and livestock and aquatic plants as well as aquatic animals; and by using the biopesticide, the pollution to the soil and water can be reduced.

Description

technical field [0001] The invention relates to the field of biopesticides, in particular to a biopesticide composed of various natural product phytotoxins and a preparation method thereof. Background technique [0002] Pesticides used to control pests and diseases in agricultural production mainly include chemical pesticides and biological pesticides. The use of traditional chemical pesticides has brought about a series of well-known problems such as environmental pollution, ecological balance damage and food safety, and has brought many adverse effects on promoting the sustainable development of agricultural economy. Entering the 1990s, with the continuous development and progress of science and technology, the call for reducing the use of chemical pesticides and protecting the living environment of human beings has become increasingly louder. Biopesticides have attracted much attention because of their safety, effectiveness, and pollution-free characteristics. The resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/18A01N65/08A01N43/16A01P7/04A01P9/00
CPCY02A50/30
Inventor 王乃利
Owner 王乃利
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