龙眼梢、果5种害虫生态位的研究

Studies on the niche of five longan pests

从龙眼梢、果５种害虫（龙眼亥麦蛾、荔枝尖细蛾、荔枝蒂蛀虫、龙眼角颊木虱、荔枝蝽）生态位出发，通过对５种害虫在时间、空间上的生态位宽度、生态位重叠的研究，探讨了５种害虫在时间、空间上的竞争机制，分析５种害虫对环境资源利用的相似程度。试验表明，荔枝尖细蛾与荔枝蒂蛀虫、龙眼角颊木虱与荔枝蝽、荔枝尖细蛾与荔枝蝽在时间、空间的一维生态位和时间—空间二维生态位的重叠较大，说明它们的发生和分布比较相似。

According to the distributions of five longan pests in different spaces from 1997 to 1998,the coefficients of the single dimensional niche breadth,niche overlap in both time and space were estimated.The results showed that there was a more similar development and distribution between Conopomorpha litchiella Bradley and Conopomorpha sinensis Bradley,Cornegenapsylla sinica Yang et Li andTessaratoma papillosa Drury,Conopomorpha litchielle Bradley and Tessaratoma papillosa Drury.