Relations between Farmland Ecological Factors and Rice Diseases and Pests

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cje ›› 1989, Vol. ›› Issue (2): 38-40,45.

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Relations between Farmland Ecological Factors and Rice Diseases and Pests

Tan Yinchu

Institute of Plant Protection, Hunan Academy of Agricultural Sciences

Received:1987-09-27 Revised:1987-12-02 Online:1989-04-10

Abstract

Abstract: The main farmland ecological factors affecting population constitution of rice diseases and pests in Hunan province include the reform of cropping systems,the improvement of cultural practices and the renewal of rice varieties.Among which, the first is the main factor, the second is an important condition,and the last is the material base.From now on integrated management should be strengthened to improve the farmland ecological conditions and reduce the discase and pest damages.

Key words: Alfalfa, Cultivar, Root system biomass, Root system distribution

Tan Yinchu. Relations between Farmland Ecological Factors and Rice Diseases and Pests[J]. cje, 1989, (2): 38-40,45.

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Relations between Farmland Ecological Factors and Rice Diseases and Pests

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