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Environment friendly pesticides for paddy field and preparation thereof

An environmental protection and pesticide technology, applied in the field of pesticides for paddy fields, can solve the problems of ecological environment, soil properties, large side effects of crops, poor effect of pest control, and impact on harvest, etc., and achieve the effects of environmental friendliness, significant control effect, and simple application

Inactive Publication Date: 2008-12-10
孙克来
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to improve the yield and quality of crops and obtain a good harvest, pesticides are indispensable, but there are also some substantial deficiencies in the use of pesticides, especially for rice fields. Most of the pesticides are currently chemical pesticides, which have a small amount of harmful effect Poor, the dosage is too much and the drug residue is large, which has great side effects on human health, ecological environment, soil properties, and crops, and affects the harvest

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Prepare paddy field environmental protection pesticide according to following raw material weight and preparation method:

[0014] The first step: raw material processing: cut the harvested tripterygium wilfordii whole plant (leaves, stems and roots, etc.) into pieces, dry them in the sun, crush them to 60 meshes, extract them aseptically with water in a closed tank, and continuously rotate the closed tank, After filtering, purifying, and concentrating, the extract of Tripterygium wilfordii is obtained; add a certain amount of dried grass root powder to 10 times the amount of absolute ethanol, soak at room temperature for 24 hours, stir in a 45-degree water bath for 8 hours, filter and concentrate under reduced pressure, and obtain the ethanol extraction Get Coptidis Rhizoma, Portulaca Oleracea, Tianmingjing and add water of five times the amount of each raw material respectively to decoct, then filter, and merge the filtrate to obtain the extract for subsequent use;

...

Embodiment 2

[0017] According to the preparation method described in Example 1, the environmentally friendly pesticides for paddy fields are prepared, and the weight of each raw material extract is as follows:

[0018] Broken intestine grass 15; Tripterygium wisteria 15; Coptis 2 kg; Purslane 2 kg; Tianmingjing 2 kg.

Embodiment 3

[0020] According to the preparation method described in Example 1, the environmentally friendly pesticides for paddy fields are prepared, and the weight of each raw material extract is as follows:

[0021] Broken intestine grass 5 kg; Tripterygium wilfordii 30 kg; Coptidis 5 kg; Purslane 3 kg; Tianmingjing 3 kg.

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PUM

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Abstract

The invention relates to a pesticide, in particular to the environmental-protection typed pesticide used for paddyfield. The pesticide is characterized in that according to the weight portions, the effective composition consists of the raw material extracting articles as follows: 5-20 of gelsemium elegans, 5-30 of tripterygium wilfordii, 1-5 of coptis, 1-5 of purslane and 1-5 of carpesium abrotanoides. The raw material of the invention is the plant extracting article, which has wide source, no toxicity, simple usage, little drug residue, no effects on the soil quality and high controlling efficiency; the pesticide of the invention especially has obvious controlling effects on various aphids, budworms, army worms, red spiders and rice blast; the controlling effect is more than 95%, which has the advantages of friendly environment, simple manufacture process and low cost.

Description

Technical field: [0001] The present invention relates to pesticides, especially pesticides for paddy fields. Background technique: [0002] In order to improve the yield and quality of crops and obtain a good harvest, pesticides are indispensable, but there are also some substantial deficiencies in the use of pesticides, especially for rice fields. Most of the pesticides are currently chemical pesticides, which have a small amount of harmful effect It is not good, the dosage is too much and the residual amount of medicine is large, which has great side effects on human health, ecological environment, soil properties and crops, and affects the harvest. Invention content: [0003] The purpose of the present invention is to overcome the above-mentioned disadvantages, and provide an environmentally friendly pesticide for paddy fields, which uses plants as raw materials, is highly efficient, non-toxic, and has no residue; in addition, it also provides its preparation method, wh...

Claims

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Application Information

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IPC IPC(8): A01N65/00
Inventor 孙克来
Owner 孙克来
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