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Annual efficient propagation method of chilo suppressalis strains

A technology of stem borer and strains, applied in animal husbandry, etc., can solve the problems of restricting the application of wild rice stems, increasing artificial consumption and larval death, and achieve the effects of avoiding abnormal death of larvae, avoiding bacterial infection, and low humidity

Inactive Publication Date: 2019-04-12
江西省农业科学院水稻研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optimum temperature for the reproduction of Chilo borer is 27°C-29°C. Appropriately increasing the temperature can speed up the growth and development process, but too high temperature will also bring adverse effects
As wild rice stems are easily rotten and deteriorated after being eaten by C. borer, it is necessary to change food frequently and transfer larvae during the breeding process, which will increase labor consumption and larval death, which limits the application of wild rice stems in large-scale reproduction of C. borer.

Method used

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  • Annual efficient propagation method of chilo suppressalis strains
  • Annual efficient propagation method of chilo suppressalis strains
  • Annual efficient propagation method of chilo suppressalis strains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Foodstuffs, culture boxes and egg-laying boxes for the reproduction of Chilo suppressalis

[0062] The larvae feed on fresh succulent stems of Zizania zizania, which are purchased from local fresh supermarkets and cut into blocks for use. The culture box is a transparent cylindrical plastic fresh-keeping box with a diameter of 15 cm and a height of 8 cm. The box cover has 5 buckles, and a square hole with a side length of 4 cm is chiseled on the box cover, and sealed with 160-mesh copper mesh to keep ventilation and prevent larvae from escaping. The spawning box is a cuboid of 50cm*25cm*50cm, the skeleton is a plastic support pipe, and the net cover is made of 120 mesh nylon gauze, which is opened by a slide fastener on one side. Cultivation boxes, spawning boxes, soft brushes, tweezers and other utensils are used after disinfection.

[0063] (2) Incubation and rearing of larvae

[0064] Chilo suppressalis is the Nanchang population preserved by the inventor, and...

Embodiment 2

[0073] Steps (1)-(4) are the same as in Example 1, and the culture temperature in step (5) is 27°C.

Embodiment 3

[0075] Steps (1)-(4) are the same as in Example 1, and the culture temperature in step (5) is 28°C.

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Abstract

The invention provides an annual efficient propagation method of chilo suppressalis strains. The annual efficient propagation method comprises the following steps: taking fresh zizania latifolia fleshy stems as foodstuff; raising chilo suppressalis larvae in a special culture box, inducing larva to pupate, and mating and spawning after eclosion. By adopting the method to carry out special annual preservation and propagation of the chilo suppressalis strains, the raising temperature of the larvae is 26 DEG C when the strains are preserved; the generation duration is 41.5 days, and the population size of 1200 larvae can be maintained with only a small amount of labor; the raising temperature of the larvae is 29 DEG C when the strains are propagated, the generation duration is 32.4 days, andthe population size can be expanded about 40 times through one generation. The annual efficient propagation method of the chilo suppressalis strains has the advantages of simple operation, easiness inobtaining foodstuff and apparatuses and capability of stably preserving specific chilo suppressalis strains; in addition, the chilo suppressalis strains are expanded in large quantities when needed,so that insect sources with consistent states are quickly provided for the relevant experimental research.

Description

technical field [0001] The invention relates to the technical field of biological reproduction, in particular to a method for annual high-efficiency reproduction of Chilo suppressalis strains. Background technique [0002] Chilo suppressalis belongs to the order Lepidoptera, and it is one of the pests that seriously harm rice in my country. Chilo borer mainly eats the stems and ears of rice, causing withered sheaths, dead hearts and white ears, affecting the yield and quality of rice. In recent years, with changes in rice varieties and farming systems, the occurrence of Chilo borer has increased, and the degree of damage has increased year by year. In addition to rice, Chilo borer also harms crops such as corn, rapeseed, wheat, and wild rice stems, and has become an important control target in agriculture. [0003] In order to improve the control effect of C. borer, corresponding basic research and toxicity tests are essential, and a large number of C. borer individuals wi...

Claims

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Application Information

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IPC IPC(8): A01K67/033
CPCA01K67/033
Inventor 杨宙黄仁良毛毳曹丰生束爱萍
Owner 江西省农业科学院水稻研究所
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