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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。
Based on the niche of five kinds of pests (longan hay moth, litchi tip moth, litchi stalk borer, longan bugs lice and litchi stink bug), the niche breadth of five kinds of pests in time and space And niche overlap, the competitive mechanism of five kinds of pests in time and space was discussed, and the similarities of five types of pests on the utilization of environmental resources were analyzed. The results showed that the overlap between one-dimensional niche and two-dimensional niche in time and space of Litchi chinensis, Litchi chinensis, Long-tailed bugs and litchi stinkbugs, It shows that their occurrence and distribution are similar.