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A method of controlling chestnut weevil with Scleroderma guanii

A technology for S. tumefaciens and chestnut, which is applied in the application, hunting equipment, animal husbandry and other directions, can solve the problems such as the lack of mature parasitic wasp-type biological control methods, and the absence of S. tumefaciens chestnut weevil parasitism, etc. Population size, the effect of reducing the hazard rate

Inactive Publication Date: 2019-04-09
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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  • A method of controlling chestnut weevil with Scleroderma guanii

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Experimental program
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Effect test

Embodiment 1

[0016] Embodiment 1: the cocoons of the old matured swollen-legged beetles of refrigerated tubes were placed in a constant temperature light box at 18° C., 200 lux for 72 hours of recovery and development, and placed on the chestnut trunk at 8 o’clock in the morning at a distance of 1 m from the tree crown, with a density of 60 heads / cubic meter. Around 3:00 in the afternoon, a small amount of Scleroderma guanii emerged naturally, and more than 95% of the cocoons had emerged into adult bees around 10:00 the next day. On the 7th day after the release, the release was repeated once more. Released for three consecutive years. The present embodiment has effectively reduced the infestation amount of the chestnut weevil.

Embodiment 2

[0017] Embodiment 2: the cocoon of the old matured swollen-legged beetles of refrigerated tubes was placed in a constant temperature light box at 30°C and 200 lux for 48 hours of recovery and development, and placed on the chestnut tree trunk at 1m away from the crown at 8 o'clock in the morning, with a density of 20 heads / cubic meter. Around 3:00 in the afternoon, a small amount of Scleroderma guanii emerged naturally, and more than 95% of the cocoons had emerged into adult bees around 10:00 the next day. On the 8th day after the release, the release was repeated once more. Released for two consecutive years. The present embodiment has effectively reduced the infestation amount of the chestnut weevil.

Embodiment 3

[0018] Embodiment 3: the cocoons of the old matured swollen-legged beetles of refrigerated tubes were placed in a constant temperature light box at 18° C., 500 lux for 48 hours of recovery and development, and placed on the chestnut trunk at 8 o’clock in the morning at a distance of 3 m from the tree crown, with a density of 60 heads / m3. Around 3:00 in the afternoon, a small amount of Scleroderma guanii emerged naturally, and more than 95% of the cocoons had emerged into adult bees around 10:00 the next day. On the 6th day after the release, the release was repeated once more. Released for three consecutive years. The present embodiment has effectively reduced the infestation amount 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 (Curculio davidi Fairmaire), also known as chestnut weevil, belongs to Coleoptera, Weevilidae. The chestnut weevil is distributed in every chestnut-producing area in China, and mainly harms chestnut plants, hazel, oak and other plants. The pest uses larvae to damage chestnuts, and the damage rate of chestnuts can reach more than 80%. It is an important pest that damages chestnuts and affects safe storage and commodity value. It mainly harms Chinese chestnut and Mao Li, but also some other oaks. 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 guani...

Claims

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Application Information

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Patent Type & Authority Patents(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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