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Botanical insecticide and preparation method thereof

A plant-derived insecticide and insecticide technology, applied in the field of plant-derived insecticides for pest control and its preparation, can solve problems such as environmental pollution, ecological balance destruction, food safety, etc., and achieve no secondary pollution , High insecticidal activity, good economical effect

Active Publication Date: 2015-09-23
嘉善陶庄再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-term dependence and extensive use of organic synthetic chemical pesticides have brought about a series of problems such as environmental pollution, ecological balance damage and food safety, which have brought many adverse effects on promoting the sustainable development of the agricultural economy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 The preparation of the extract of penicillin petroleum ether

[0016] Weigh 1.82kg of dry Herba chinensis, grind it into fine powder, put it in a round bottom flask, then add ethanol solution with a volume concentration of 68%, soak for 30min, heat and reflux for extraction 3 times, the ratio of solid to liquid is 1:12 , 1:8 and 1:6 (kg / L), extract for 2.5 hours for the first time, extract for 2 hours for the second and third times, filter, combine the three extractions, centrifuge at 2000rpm, and concentrate the supernatant by rotary evaporation at a temperature of 45°C , vacuum degree 0.1MPa, until there is no smell of ethanol, add 600mL of purified water to dissolve the suspension, extract 3 times with an equal volume of petroleum ether, combine the petroleum ether extracts, concentrate to remove the solvent, and crush, that is, the extraction of penicillin petroleum ether things.

Embodiment 4

[0021] Example 4 The control test of the extract of Herba chinensis on the control of cotton bollworm

[0022] The extract powders prepared in Example 1 and Comparative Examples 1-2 were respectively added to the nutrient powder of cotton bollworm at a rate of 0.2‰, and then 30 second-instar larvae of cotton bollworm were inserted into each group and placed in a breeding room for rearing. The feeding conditions are temperature 25-28°C, RH 70%-80%, light as L:D=14h:10h. Cultivate 24, 48 hours to observe the death situation of cotton bollworm. The method of judging the death of pests: touch the larvae with the tip of a brush, if the body does not move, it is considered dead. As a result, the death conditions of the second instar cotton bollworm in each group are shown in Table 1. According to the test results in Table 1, it can be seen that the ethyl acetate extract of chrysanthemum has no killing effect on cotton bollworm, the alcohol extract of chrysanthemum has little kil...

Embodiment 5

[0025] Example 5 The control test of Plutella xylostella extracts from C.

[0026] The extract powders of Plutella xylostella prepared in Example 1 and Comparative Examples 1-2 were added to Plutella xylostella nutrient powder at a rate of 0.2‰, and then 30 second-instar larvae of Plutella xylostella were inserted into each group and placed in a breeding room for rearing. The feeding conditions are temperature 25-28°C, RH 70%-80%, light as L:D=14h:10h. Cultivate for 24 and 48 hours to observe the death of the second instar diamondback moth. The method of judging the death of pests: touch the larvae with the tip of a brush, if the body does not move, it is considered dead. The mortality of the second instar diamondback moth in each group is shown in Table 2. According to the test results in Table 2, it can be seen that the ethyl acetate extract of P. xylostella has no killing effect on Plutella xylostella, the ethanol extract of P. xylostella has little killing effect on P....

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PUM

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Abstract

The invention discloses a botanical insecticide and a preparation method thereof. Active components of the botanical insecticide comprise a petroleum ether extract of cucumis melo all-grass, wherein the cucumis melo all-grass is a leaf of Cucumis melo L. which is a cucurbitaceae cucumis plant. According to the invention, effective parts are extracted from the cucumis melo all-grass to be used as active components of the insecticide, so that the petroleum ether extract of cucumis melo all-grass, which can be used for effectively killing aphids, is provided, and a new thought is provided for pest control in agricultural production.

Description

technical field [0001] The invention belongs to the technical field of plant extraction, and in particular relates to a botanical insecticide for exterminating pests and a preparation method thereof. Background technique [0002] Pesticides play a very important role in agricultural production. After the invention of organic chemical pesticides in the 1940s, it greatly enhanced the ability of human beings to control the harm of diseases and insect pests, and made a significant contribution to our restoration of crop yield losses. However, the long-term dependence and extensive use of organic synthetic chemical pesticides have brought about a series of well-known problems such as environmental pollution, ecological balance damage and food safety, and have brought many adverse effects on promoting the sustainable development of the agricultural economy. [0003] With the improvement of people's health awareness, China is a big agricultural country. Most countries attach gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01P7/04
Inventor 杜杭华
Owner 嘉善陶庄再生资源有限公司
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