烟粉虱天敌作用的评价  

Evaluation of Effectiveness of Natural Enemies of Bemisia tabaci

作　　者：沈斌斌[1] 吴建辉[1] 任顺祥[1] 

机构地区：[1]华南农业大学害虫生物防治研究室,广东广州510642

出　　处：《江西农业大学学报》2004年第1期17-20,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家"十五"攻关项目(2001BA509B0604);广东省自然科学基金资助项目(010312);广东省科委资助项目(9622035-02)

摘　　要：在春季黄瓜田内组建烟粉虱自然种群生命表,运用排除作用控制指数(EIPC)评价了天敌对烟粉虱种群的控制作用。结果表明:烟粉虱高龄若虫的捕食性天敌是影响烟粉虱种群数量动态的重要因子。在春季黄瓜生长前期和中后期,如果排除全部天敌的作用,烟粉虱种群趋势指数将分别增长为现在的8.5094和6.6090倍。Life tables of natural Bemisia tabaci population were established in spring cucumber field, the exclusion index of population control(EIPC) was used to evaluate the controlling effect of natural enemies on B.tabaci population. The results showed that predatory natural enemies of the large nymph of B. tabaci were the important factor influencing the population dynamics of B. tabaci. In the early stage and mid-late stage of cucumber growth period, if all natural enemies were excluded, the population development trend indices of B.tabaci would increase by 8.509 4 and 6.609 0 times those of current indices respectively.

关 键 词：烟粉虱 天敌 春季 黄瓜 种群生命表 排除作用控制指数 EIPC 

分 类 号：Q968.1[生物学—昆虫学] S433.3[农业科学—农业昆虫与害虫防治]