关键词: 节肢动物群落, 功能团, 多样性, 控制功能, 褐飞虱

Abstract: The diversity of arthropod community in five types of paddy were studied in Jiangpu, Jiangsu Province and Anqing, Anhui Province. The results showed that the diversity was the highest in the round grained rice field. The correlation frequency in 11 years between population density of spider sub-community and the brown planthopper (BPH), Nilaparvata lugens was 0.64. The EF index ［EF=(E+P)^E/P］ was employed to evaluate the nature enemy function to control the brown planthopper. The relations of spider functional group with growth, reproduction and population density of brown planthopper were investigated by numerical functional response method. The relations of the initial EF value with the injured rate of rice and the carrying capacity of logistic curve of the brown planthopper population (K) were significant. The possibility of using the initial EF value to predict the enemy function and to coordinate the pest control strategies with natural enemies and with chemical insecticides was discussed.

Key words: arthropod community, functional group, diversity, controlling function, Nilaparvata lugens