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Establishment and maintenance methods of screening and identification nursery for rice stem borer, rice stem borer and rice leaf roller

A technology for identifying rice leaf rollers and nurseries, which is applied in rice cultivation, botany equipment and methods, plant gene improvement, etc., can solve the problems of few sources of identification insects, poor reliability of identification results, and large fluctuations, and achieve continuous Strong resistance, stable insect situation, and guaranteed accuracy

Active Publication Date: 2020-04-21
RICE & SORGHUM INST SICHUAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of fewer insect sources, large fluctuations, and poor reliability of identification results caused by natural induction in the field, the present invention provides a method for establishing and maintaining a screening and identification nursery for two (three) rice stem borers and leaf rollers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Screening and identification The location of the nursery is Yingzhou Town, Lingshui Li Autonomous County, Hainan, with an annual average temperature of 25°C, no severe cold in winter, and sufficient rainfall. There are more generations of Chilo borer in the south of China than in the north, and there are 6 generations in Hainan Island a year, so Hainan Island is the preferred area for the screening and identification of Chilo borer. The rice leaf roller is widely distributed in various rice areas. The pests that meet the requirements of the present invention can establish screening and identification gardens in natural overwintering areas;

[0030] 2. The location of the screening and identification nursery is Hainan Yingzhou Southern Breeding Base of Sichuan Academy of Agricultural Sciences. It has more than 210 mu of paddy fields. More than 210 acres;

[0031] 3. The screening and identification nursery is located on one side or both sides of the main ditch of th...

Embodiment 2

[0038] 1. Screening and identification nursery setting location: the experimental base of our institute in Fuji Town, Luxian County, Sichuan Province. The main pests are the rice stem borer and the rice leaf roller, and there is no stem borer. Rice planting is mainly in the mode of mid-season rice + ratooning rice, and the yield of ratooning rice is low and harvested. Winter crops mainly include rapeseed, broad beans, wheat, etc., and weeds on the edge of the field mainly include barnyardgrass, Lishihe, paspalum, crabgrass, foxtail, etc.

[0039] 2. The rice test base in Fuji Town, Lu County, Sichuan Province is surrounded by paddy fields of farmers, all of which are planted in the mode of medium rice + ratooning rice, and the rest of the time the fields are in a state of water storage;

[0040] 3. The established nursery for screening and identification of rice borer and rice leaf roller is located at the upper water level of the entire paddy field irrigation system of the un...

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Abstract

The invention relates to an establishing and maintaining method for a screening and identifying nursery for rice pests. A nursery establishing principle and a maintaining method of the screening and identifying nursery are proposed according to factors capable of affecting the generation and development trends of chilo suppressalis, tryporyza incertulas and rice leaf roller populations to achievethe aims of cumulative screening and identification of a base number of nursery pest population density, so that the accuracy and effectiveness of identification and screening of pest resistance of amaterial are guaranteed. The establishing and maintaining method is uncontested on the safety aspect, a field natural pest trapping identification method is improved, and the accuracy of a pest resistance identification and screening result is improved; and the establishing and maintaining method has the characteristic of high throughput, so that a great number of breeding materials can be simultaneously subjected to pest resistance identification.

Description

technical field [0001] The invention belongs to the technical field of rice pest screening and identification, and in particular relates to a method for establishing and maintaining a screening and identification nursery for rice stem borers, rice stem borers and rice leaf rollers. Background technique [0002] Chilo suppressalis (Walker)), rice borer (Scirpophagaincertulas (Walk)) and rice leaf roller (Cnaphalocrocis medinalis (Guenée)) are the three major insect pests that affect the high and stable yield of rice. The main means of controlling these three pests is to use chemical pesticides. With the continuous increase in the frequency and quantity of pesticide application, on the one hand, it will lead to the increase of pest resistance and fall into a vicious cycle of increasing pesticide dosage. On the other hand, it will cause the accumulation of pesticide pollution in the farmland environment and the increase of pesticide residues in agricultural products, directly t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/22A01H1/04
CPCA01G22/22A01H1/04
Inventor 谢戎李永洪王中华
Owner RICE & SORGHUM INST SICHUAN ACAD OF AGRI SCI
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