摘要
系统调查了春直播棉不同时期棉株上、中、下部棉蚜、棉叶螨、棉铃虫及其主要天敌的数量。求得各时期的群落多样性指数、均匀度和相似性指数。
The numbers of Aphis gossypii , Helicoverpa armigera ,cotton mites and their natural primary enemies in the upper, middle and lower parts of plants in the different developmental periods of spring directly planted cotton were investigated. Based on these investigated results, the indexes of diversity, uniformity and similarity of community were obtained, and the characteristics of community in every period were analysed. 〖WTHZ]
出处
《环境昆虫学报》
CSCD
1996年第A04期14-17,共4页
Journal of Environmental Entomology
关键词
春直播棉
害虫
天敌
群落多样性
均匀度
群落相似性
spring directly planted cotton
insect pest
natural enemy
diversity of community
uniformity of community
similarity of community
