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Preparation method of plant insecticide

A plant insecticide and material technology, applied in the field of plant insecticide preparation, can solve the problems of low insecticide control efficiency, achieve the effect of improving insecticidal effect, low production cost, and enhancing effect

Inactive Publication Date: 2018-10-26
HEFEI XUELIXIN AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toxicity of the reagent used is less, and it is both environmentally friendly and safe during operation and use, but the control effect of the insecticide of the present invention is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of plant insecticide, comprising the following steps:

[0030] (1) Sophora alopecuroides, scopolamine, Nuxe chinensis, Deer vine root, tobacco, poisonous quinoa, orange peel, are mixed and added in a pulverizer for pulverization, and passed through a 60-mesh sieve to obtain a mixed powder;

[0031] (2) Add 65% aqueous ethanol solution of 10 times its weight to the mixed powder of step (1), stir and mix evenly, after soaking for 30 minutes, put it into an ultrasonic extractor for extraction, extraction power 500 watts, extraction time 60 minutes, get the extract;

[0032] (3) Filter the extract to obtain filtrate and filter residue, add 65% ethanol aqueous solution equivalent to 10 times the weight of the mixed powder in the filter residue, put it into an ultrasonic extractor for extraction, extract power 500 watts, and extract time for 60 minutes to obtain the extract solution, repeat the ultrasonic extraction operation once, and combine the filtra...

Embodiment 2

[0045] A preparation method of plant insecticide, comprising the following steps:

[0046] (1) Add Sophora Sophorae, Scopolamine, Nuxychia, Deer Vine Root, Tobacco, Poison Quinoa, Tangerine Peel, and mix them into a pulverizer for pulverization, and pass through an 80-mesh sieve to obtain a mixed powder;

[0047](2) Add 15 times of its weight in 65% ethanol aqueous solution to the mixed powder of step (1), stir and mix evenly, after soaking for 50 minutes, put it into an ultrasonic extractor for extraction, extraction power is 700 watts, extraction time is 80 minutes, get the extract;

[0048] (3) Filter the extract to obtain filtrate and filter residue, add 65% ethanol aqueous solution equivalent to 15 times the weight of the mixed powder in the filter residue, put it into an ultrasonic extractor for extraction, extract power 700 watts, and extract time for 80 minutes to obtain the extract solution, repeat the ultrasonic extraction operation 3 times, and combine the filtrate...

Embodiment 3

[0061] A preparation method of plant insecticide, comprising the following steps:

[0062] (1) Sophora alopecuroides, scopolamine, Nuxychia chinensis, Deer vine root, tobacco, poisonous quinoa, tangerine peel, are mixed and added in a pulverizer for pulverization, and passed through a 70-mesh sieve to obtain a mixed powder;

[0063] (2) Add 13 times of its weight in 65% ethanol aqueous solution to the mixed powder of step (1), stir and mix evenly, after soaking for 30-50 minutes, put it into an ultrasonic extractor for extraction, the extraction power is 640 watts, and the extraction time is 74 Minutes to get the extract;

[0064] (3) Filter the extract to obtain filtrate and filter residue, add 65% ethanol aqueous solution equivalent to 13 times the weight of the mixed powder in the filter residue, put it into an ultrasonic extractor for extraction, extract power 620 watts, and extract time for 72 minutes to obtain the extracted solution, repeat the ultrasonic extraction ope...

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PUM

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Abstract

The invention discloses a preparation method of plant insecticide, which relates to the field of insecticide. The preparation method comprises the following steps: (1) mixing and smashing natural plants; (2) ultrasonically extracting; (3) ultrasonically repeatedly extracting; (4) concentrating an extracting solution, and spray drying; (5) smashing sulfur and borax; and (6) preparing the environment-friendly plant insecticide. In the preparation method provided by the invention, the ultrasonic extraction is adopted, so that the thermal decomposition of active substances in the heating reflux extraction can be reduced, and by virtue of the repeated ultrasonic extraction, the yield is increased; and the insecticide prepared by matching various raw materials in the preparation method is wide in insecticidal spectrum, good in insecticide effect, easy in decomposition, free from residue, and environmentally friendly.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a preparation method of plant pesticides. Background technique [0002] Pesticides are mainly used to control agricultural pests and urban sanitation pests. It has a long history of use, large dosage and many varieties. In the 20th century, with the rapid development of agriculture, pesticides greatly increased agricultural output. In the process of agricultural and forestry pest control, a large number of chemical pesticides are used, which have large toxic and side effects and residues, and at the same time cause land and water pollution. The residence time is long, it is difficult to decompose, and it is harmful to the human body. With the enhancement of people's environmental awareness and the need for food safety, the whole society, especially agricultural, forestry, and animal husbandry producers, urgently need high-efficiency, low-toxicity, and environmentally friendly pestici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/38A01N59/02A01N59/14A01P7/02A01P7/04
CPCA01N59/02A01N59/14A01N65/00A01N65/08A01N65/20A01N65/36A01N65/38Y02A50/30
Inventor 张力
Owner HEFEI XUELIXIN AGRI TECH CO LTD
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