Brown rice planthopper insect repellent as well as preparation method and application thereof

A technology of repellent and brown planthopper, applied in the direction of animal repellent, botanical equipment and methods, applications, etc., can solve the problems of unclear comprehensive effect, achieve broad industrialization prospects, high efficiency, reduce damage and population number Effect

Inactive Publication Date: 2011-04-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, although some studies have reported the repellent effect of some plant extracts on N. lugens, most of these studies only reported the effect of plant extracts on a certain stage of N. lugens, and the comprehensive effect is not clear.

Method used

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  • Brown rice planthopper insect repellent as well as preparation method and application thereof
  • Brown rice planthopper insect repellent as well as preparation method and application thereof
  • Brown rice planthopper insect repellent as well as preparation method and application thereof

Examples

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Effect test

preparation example Construction

[0022] The preparation method of brown planthopper repellent of the present invention comprises the following steps:

[0023] 1. Preparation of Zanthoxylum bungeanum ethanol extract: Dried Zanthoxylum bungeanum in an oven at 65°C, ground with liquid nitrogen, passed through a 60-mesh sieve, and extracted with 95% ethanol by volume percentage, soaked Zanthoxylum bungeanum in 6 times ethanol for 36 hours, ultrasonicated for 1 hour, After filtering, take the filtrate; soak the filter residue in 3 times ethanol for 24 hours, and filter. The two filtrates were combined, concentrated to dryness, and stored for later use.

[0024] 2. Prepare the ethanol extract of water hyacinth: dry the water hyacinth in an oven at 65°C, grind it with liquid nitrogen, pass through a 60-mesh sieve, extract it by cold soaking with 95% ethanol by volume, soak the water hyacinth in 6 times of ethanol for 36 hours, Sonicate for 1 hour, and take the filtrate after filtering; soak the filter residue in 3 ...

Embodiment 1

[0032] The preparation (parts by weight) of embodiment 1 brown planthopper repellent

[0033] Prepare 1 part of ethanol extract of Zanthoxylum bungeanum, 1 part of ethanol extract of water hyacinth, and 0.01 part of farnesin, and mix well to prepare the repellent of brown planthopper. Experiments have proved that the brown planthopper repellent can effectively repel the female adults of the brown planthopper, feeding by the nymphs and laying eggs by the female adults.

Embodiment 2

[0034] Embodiment 2: the preparation (weight part) of brown planthopper repellent

[0035] Prepare 80 parts of ethanol extract of Zanthoxylum bungeanum, 80 parts of ethanol extract of water hyacinth, and 0.10 part of farnesin, and mix evenly to obtain the repellent of brown planthopper. Experiments have proved that the brown planthopper repellent can effectively repel the female adults of the brown planthopper, feeding by the nymphs and laying eggs by the female adults.

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Abstract

The invention discloses a brown rice planthopper insect repellent as well as a preparation method and application thereof. The brown rice planthopper insect repellent comprises the following components by weight: 1-80mg of pepper extract, 1-80mg of water hyacinth extract and 0.01-0.10mg of farnesene which are dissolved in each ml of methanol solvent. According to the invention, the insect repellent prepared from the methanol extract of plants and a volatile matter preparation can repel the feeding of female brown rice planthopper adult insects and nymph and the laying of the female adult insets, thereby reducing the hazard and the population quantity of the brown rice planthopper insect. The insect repellent has the characteristics of low cost, high efficiency, environment friendliness, no harm to human beings and livestock and the like and broad industrial prospect. With the simple preparation method, the insect repellent is especially suitable for non-polluted production of rice and has broad economic, social and biological benefits.

Description

technical field [0001] The invention relates to a repellent that can effectively regulate the oviposition behavior of rice planthopper adults and the feeding behavior of adults and nymphs, in particular to a repellent that uses non-host secondary metabolites and insect pest-induced host volatiles to control rice planthoppers. A repellent for regulating the spawning behavior of the animal and its preparation method and application. Background technique [0002] Rice planthopper is one of the most important pests of rice in my country. Its main species include the brown planthopper Nilaparvata lugens and white-backed planthopper Sogatella furcifera et al. In recent years, rice planthoppers have broken out every year, causing serious losses to rice production in my country. According to the survey data of the Zhejiang Provincial Department of Agriculture in 2005, in the paddy fields under the jurisdiction of Zhejiang Province, the occurrence of the fifth generation of brown...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/36A01N65/12A01N49/00A01P17/00
CPCY02A50/30
Inventor 娄永根刘胜宁汪鹏
Owner ZHEJIANG UNIV
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