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Method for preventing and controlling chestnut weevils with scleroderma guani

A technology of swollen-legged wasp and chestnut, which is applied in application, hunting equipment, animal husbandry, etc., can solve the problems of immature parasitoid-type biological control methods and no detection of swollen-legged wasp chestnut weevil parasitism, etc., to reduce The effect of population size and harm rate reduction

Inactive Publication Date: 2017-02-01
YUNNAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chestnut weevil, as a borer pest, is mainly controlled by chemical pesticides and artificial prevention methods. Biological control is mainly based on microbial parasitism. There is no mature and feasible parasitoid biological control method, and no natural conditions have been found. Parasitism of Chestnut Weevil by Scleroderma guanii

Method used

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  • Method for preventing and controlling chestnut weevils with scleroderma guani

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: The refrigerated old and mature swollen leg cocoons were resuscitated and developed for 72 hours under a constant temperature light box at 18°C ​​and 200lux, and placed on the chestnut trunk at 1m from the canopy at 8 o'clock in the morning, with a density of 60 heads / m3. A small amount of Sclerotus guaniensis was seen to emerge naturally around 3 o'clock in the afternoon, and more than 95% of the cocoons had emerged into bees around 10 o'clock the next day. The release was repeated again on the 7th day after release. Released for three consecutive years. This embodiment effectively reduces the amount of damage of the chestnut weevil.

Embodiment 2

[0017] Example 2: The refrigerated old-frozen swollen leg cocoons were resuscitated and developed in a constant temperature light box at 30°C and 200lux for 48 hours. They were placed on the chestnut trunk at 1m from the canopy at 8 o'clock in the morning, with a density of 20 heads / m3. A small amount of Sclerotus guaniensis was seen to emerge naturally around 3 o'clock in the afternoon, and more than 95% of the cocoons had emerged into bees around 10 o'clock the next day. The release was repeated again on the 8th day after release. Released for two consecutive years. This embodiment effectively reduces the amount of damage of the chestnut weevil.

Embodiment 3

[0018] Example 3: The refrigerated old-frozen swollen leg cocoons were resuscitated and developed in a constant temperature light box at 18°C ​​and 500lux for 48 hours, and placed on the chestnut trunk 3m from the canopy at 8 o'clock in the morning, with a density of 60 heads / m3. A small amount of Sclerotus guaniensis was seen to emerge naturally around 3 o'clock in the afternoon, and more than 95% of the cocoons had emerged into bees around 10 o'clock the next day. The release was repeated again on the 6th day after release. Released for three consecutive years. This embodiment effectively reduces the amount of damage of the chestnut weevil.

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Abstract

The invention relates to a method for preventing and controlling chestnut weevils with scleroderma guani, and belongs to the technical field of biological prevention and control of pests. The method comprises the following steps: taking out refrigerated scleroderma guani mature cocoons or reviving adult bees, placing the mature cocoons at the height of a chestnut tree crown 1-3 m away from the ground in the evening or in the morning, performing natural eclosion and releasing the cocoons after 8-24 h, releasing the revived adult bees to the height 20-50 cm away from the tree crown of a chestnut tree from morning to before 3 pm; starting to release bees in mid-August for the first time, wherein the first bee-releasing time is 15-40 days before harvesting of chestnuts, the amount of release is 20-60 bees per cubic meter, the times of releasing bees is 1-4 each year, and the time interval is 6-8 days; releasing the bees annularly or once a year for consecutive years. The situation that the chestnut weevils are prevented and controlled with scleroderma guani is realized for the first time, the scleroderma guani can effectively parasitize the chestnut weevils in the process of chestnut planting under manual intervention, the population number of the chestnut weevils in next year is decreased and the damage is reduced.

Description

Technical field [0001] The invention belongs to the technical field of biological control of pests. Background technique [0002] Chestnut weevil (Latin scientific name Curculio davidi Fairmaire), also known as chestnut real elephant, belongs to Coleoptera, Weevilidae. Chestnut weevil is distributed in all chestnut producing areas in China, and it mainly harms plants of the genus Castanea, hazel, oak and other plants. The insect damages chestnuts with larvae, and the damage rate of chestnuts can reach more than 80%. It is an important pest that damages chestnuts and affects safe storage and commercial value. Mainly damage Chinese chestnut and Mao chestnut, but also damage some other oaks. As a borer pest, the chestnut weevil is used to control the chestnut weevil. It now mainly relies on chemical pesticides and artificial prevention methods. Biological control is mainly based on microbial parasitism. No mature and feasible parasitic bee-type biological control methods have yet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01M99/00
CPCA01M99/00
Inventor 吴国星秦小萍吴道慧高熹何霞红李强杨文波张扬
Owner YUNNAN AGRICULTURAL UNIVERSITY
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