Method suitable for controlling pests by releasing parasitic wasps in paddy field and release devices

A release device, pest control technology, applied in hunting equipment, applications, animal husbandry, etc., can solve the problems of inconvenient operation, design and use limitations, and the special environment of rice plants is not considered, and achieves the effect of avoiding feeding and preventing rain. Effect

Inactive Publication Date: 2013-11-27
JILIN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design and use of these bee releasers are basically limited to the control of lepidopteran pests on field crops or forestry, without considering the special environment of rice plants

Method used

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  • Method suitable for controlling pests by releasing parasitic wasps in paddy field and release devices
  • Method suitable for controlling pests by releasing parasitic wasps in paddy field and release devices
  • Method suitable for controlling pests by releasing parasitic wasps in paddy field and release devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] according to figure 1 As shown, the release device of the present invention is suitable for releasing parasitoids in paddy fields to prevent and control pests, and consists of a dark cup body 1 and a cup cover 2; wherein, the cup body 1 and 2 are all made of cornstarch biodegradable materials; figure 2 As shown, the inside of the cup body 1 is a funnel-shaped partition 3 that separates the cup body 1 into the lower load-bearing space and the upper host egg space, and the center of the partition 3 is a circular funnel head 4 with a diameter of 0.3-0.8cm; The middle part of the body 1 is provided with an outer edge ring 5 with a protruding length of 0.3-0.5 cm; 3-5 honeycomb holes 6 are evenly distributed on the edge of the cup mouth of the cup body 1, and the honeycomb holes are rectangular holes with a length of 2 mm and a width of 4 mm. ; see image 3 , the outer edge of the cup cover 2 is arc-shaped outreach, and after being fastened with the cup body 1, the honeyc...

Embodiment 2

[0022] Inject dry sand into the cup body 1 of the release device described in Example 1 to fill the load-bearing space at the bottom of the partition 3, and place tussah eggs or rice moth egg cards parasitized by Trichogramma in the host egg space at the top of the partition 3 , then fasten the cup cover 2 and the cup body 1, keep the cup cover 2 facing up when transporting and packing, and after the throwing release device falls into the paddy field, the outer edge ring 5 surrounding the cup body 1 in parallel makes it float on the water surface , after Trichogramma emerges, under the action of phototaxis, it actively crawls out of the beehive 6 . The release device will degrade naturally in about 6 months under natural conditions, and will not pollute the environment.

Embodiment 3

[0024] Control of rice stem borer by Trichogramma oryzae, which breeds on rice moth eggs as host

[0025] During the peak spawning period of rice stem borer, for a paddy field with an area of ​​1 mu (667 square meters), throw 3 release devices containing Trichogramma rice borer (Example 1), and release bees according to the following steps : Inject about 15 grams of dry sand into the release device cup 1 to make it full of the load-bearing space at the lower part of the partition 3, and place about 3330 Trichogramma rice moth egg cards that are about to emerge into the upper part of the partition 3 host egg space, and then the cup lid 2 and the cup body 1 are fastened. Prepare 3 release devices containing the same amount of bees, and always keep the lid 2 up when transporting to the field. After arriving at the target control field, on the ridge of the paddy field pool, throw 3 bee release devices evenly into the field, and the total amount of bee release is about 10,000. Af...

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PUM

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Abstract

The invention discloses a method suitable for controlling pests by releasing parasitic wasps in a paddy field. A counter-weight is injected into a bearing space of a releasing device, and ova used for breeding the parasitic wasps are put into a host ovum space; then a cover is buckled onto each cup to form a whole body; the release devices containing the parasitic wasps are uniformly thrown into the paddy field and float on the water surface automatically, the parasitic wasps climb out from outgoing holes actively after eclosion of the ova of the parasitic wasps and search pest host ova; when the parasitic wasps are released in the field, operators can throw the release devices with certain weights into the paddy field on ridges of the paddy field instead of going into the paddy field, under the action of gravity, the bottom of each release device falls into the water first, and under the action of buoyancy force of the outer edge of each cup, each release device can not sink underwater, each upper space holding trichogramma can float on the water surface, even a little amount of water enters from the outgoing holes, and the water flows into a lower space containing sand through a funnel-shaped clapboard in each release device; the method can be used for preventing a predatism natural enemy from eating the host ova, can prevent rain and water accumulation, and realizing the mechanized production. The release devices are all made from a corn starch biodegradable material which can be degraded within about six months under natural conditions, and can not pollute the environment.

Description

technical field [0001] The invention discloses a method suitable for releasing parasitic wasps in paddy fields to control pests, and provides a corresponding releasing device, belonging to the technical field of biological control of agricultural pests. Background technique [0002] Rice is the main grain crop in my country, accounting for 26% of the total arable land and about 43% of the total grain output. There are more than 30 kinds of common pests that damage rice. Among the major pests of crops in my country, rice pests account for more than half. Among them, some species of pests occur all the year round, such as rice borer, rice borer, rice borer, rice leaf roller, brown planthopper, etc.; some species occur in local areas, such as rice bract moth and rice negative mudworm; Large occurrences, such as armyworm; some are newly introduced pests, such as rice water weevil. Among these pests, most species belong to the order Lepidoptera, which cause serious economic lo...

Claims

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Application Information

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IPC IPC(8): A01M99/00A01K67/033
Inventor 臧连生阮长春邵喜文孙光芝张俊杰李天昊刘志王秀梅杜文梅
Owner JILIN AGRICULTURAL UNIV
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