安徽省合肥市杨树害虫与天敌结构及动态研究

通过对合肥地区杨树害虫与天敌的抽样调查,共查得杨树害虫36种,分属于昆虫纲7目22科,自然天敌22种,分属于昆虫纲5目10科和蛛形纲1目6科。主要害虫类群为舟蛾科、跳甲科、网蝽科、蟋蟀科和刺蛾科,主要天敌类群为茧蜂科、草蛉科、寄蝇科、微蛛科和肖蛛科。杨树害虫和天敌的物种丰富度全年的动态变化基本一致,均表现为低-高-低-高-低的变化格局。害虫和天敌的物种多样性指数年动态变趋势化基本一致,表现为春季物种多样性指数低,5月开始显著升高,害虫的物种多样性指数延续至8月、天敌的物种多样性指数延续至10月维持在较高的水平上。天敌群落对害虫群落有明显的追随联系。

Structure and dynamics of insect pests and its natural enemies in poplar stand in Hefei,Anhui Province

Based on the investigation of pests and natural enemies in poplar stand within a year,the composition and the dynamics of pests and natural enemies were analyzed.The results showed that there were 36 species of insect pests belonging to 22 families and 22 species of natural enemies belonging to 16 families.The important groups of insect pests were Notodontidae,Halticidae,Tingidae,Gryllidae and Limacodidae,while the important groups of natural enemies were Braconidae,Chrysopidae,Tachinidae,Micryphatidae and ...