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A kind of method of using tender ear of corn to feed the large borer

A technology of corn cobs and tender corns, applied in the new field of breeding large borers, which can solve the problems of long rice growth cycle, high cost, and difficulty in obtaining isolated rice plants, and achieve short development time, reduce pollution, and solve the larval survival rate low effect

Active Publication Date: 2019-04-23
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long growth cycle of rice and the need for strong light, it is difficult to obtain isolated rice plants and the cost is too high

Method used

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  • A kind of method of using tender ear of corn to feed the large borer
  • A kind of method of using tender ear of corn to feed the large borer
  • A kind of method of using tender ear of corn to feed the large borer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the method for a large number of rearing of the large borer with tender ears of corn

[0023] A kind of technical method that utilizes tender ear of corn to raise the large borer, mainly comprises the following steps:

[0024] 1) Selection of ears of corn: select fresh ears of corn at the silking-grain formation stage, that is, ears of corn about 60-70 days after sowing in the corn growing season, with bracts and filaments. At the central position of the tender ear of corn for testing, cut about 3-4cm slits on the corn bracts with a wallpaper cutter.

[0025] 2) Larvae stage: After the eggs of S. arborescens turn black, put the rice stems with eggs (about 50 grains) on the incision of the tender corn ears, and put them into the corn bracts with tweezers, and then place the corn ears with One side of the incision is placed downwards, placed in the raising box (30cm×15cm×10cm), and 4-5 ears of corn can be placed in each box, that is, about 200-250 grains of...

Embodiment 2

[0030] Example 2. Comparison of the effects of feeding the large borer with tender corn ears, fresh wild rice stems and sweet corn

[0031] 2.1 Test materials and methods:

[0032] 2.1.1 Source of tested insects

[0033] The test borer was collected in the rice fields of the Gangji Agricultural Comprehensive Experimental Base of Anhui Academy of Agricultural Sciences. The larvae were collected as larvae. They were raised indoors with wild rice stems until they pupated. Eggs are laid in egg cages. After laying eggs, disinfect and moisturize the eggs, put them on the insect rack, and wait for the eggs to develop and turn black for testing. The rearing conditions for larvae are: 27±1°C, photoperiod 16L:8D, RH 60-70%, the relative humidity RH for mating and oviposition of adults should be kept at 80-85%, and the temperature and light conditions are the same as above.

[0034] 2.1.2 In vitro plants for testing

[0035] Tender ears of corn: Zhengdan 958, a conventional corn vari...

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Abstract

The invention provides a method for feeding sesamia inferens by means of tender corn ears. According to the method, tender corn ears with bracts and filaments in the silking stage to grain filling stage is inoculated with nigrescent egg mass of sesamia inferens, and the corn ears are replaced with fresh corn ears 8-10 days later till larva pupation; during pupation, paper rolls are placed in a feeding box to provide space for pupation; after adult emergence, adults are placed in a laying coop with tillering-stage rice seedlings inside for oviposition, and eggs with leaf sheath are taken out, sterilized with formaldehyde of 10%, and then placed in a culture dish with degreasing cotton and wet filter paper inside for moisturizing till the egg mass develops to become black. By feeding sesamia inferens by means of tender corn ears in the silking stage to grain filling stage, the survival rate and development rate of early larvae, pupal weight and the fertility of adults are increased remarkably. The method is suitable for large-scale breeding of sesamia inferens standard test insects, and provides technical support for obtaining sufficient and high-quality insect sources.

Description

technical field [0001] The invention relates to the field of insect breeding, and in particular relates to a new technical method for raising S. mori. Background technique [0002] Sesamia inferens (Walker) belongs to Lepidoptera Noctuidae. It is one of the important pests on rice and also on commercial crops such as wild rice stem, water chestnut and sugar cane. Since the 1990s, with the promotion of the area of ​​hybrid rice and the misuse and abuse of a large number of highly toxic chemical pesticides, the damage of the large borer has increased year by year in some areas, posing a serious threat to the current rice production (Fu Qiang, Huang Shiwen, 2005. Primary color atlas for diagnosis and control of rice diseases and insect pests. Beijing: Jindun Publishing House; Huang Chenghua, Yao Hongwei, Ye Gongyin, Jiang Xuehui, Hu Cui, Cheng Jiaan, 2005. Sensitivity of different populations of Chiloborer spp. Acta Journal, 7(4):323-328). In order to effectively control the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/033A23K50/90A23K10/30A23K10/20
CPCA01K67/033
Inventor 韩兰芝唐辉王兴云彭于发
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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