摘要
新疆南疆绿洲农田生态系统中,在11种主要作物(植物)上发现捕食性节肢动物类天敌7目16科约31种。通过丰富度指数、多样性指数、均匀性指数和调查平均数的比较,苜蓿在捕食性节肢动物类天敌种类和数量上占有较大优势;系统聚类分析证明马铃薯与棉花相似距离最近,其次为小麦和苜蓿与棉花的相似距离较近。研究结果显示,选用苜蓿作为棉花的间作或邻作作物,对调整捕食性节肢动物类天敌并利用其进行害虫生物防治具有重要意义。
11 species of plants in agricultural system of Xinjiang were s urveied for predatory arthropod by sweepingnets. There were 31 species of pre dators, belonging to 16 families of 7 classes. The methods of richness index, d iversity index, evenness index, average, and clustering analysis were used to co mpare the predator communities in different plants. The predators in alfalfa we re dominant in both species and number. Community of predators in potato was th e most similar to that in cotton, and those of alfalfa and wheat took second pla ce. According to all the results, it was suggested that alfalfa neighboring to cotton could help the increase of predators controlling pests in cotton.
出处
《中国生物防治》
CSCD
北大核心
2003年第1期1-5,共5页
Chinese Journal of Biological Control
基金
中国科学院生物学特别项目(NK 农 B 07)
