摘要
在自然变温条件下，根据连续饲养麦无网长管蚜４个世代的资料，组建了其特定年龄生命在和繁殖特征生命在。结果表明，世代平均温在１８．３℃时，其种群增长趋势指数（Ｉ＝２６．４６９３）和内禀增长率（ｒｍ＝０．１３９５）最大，即该温度最适宜麦无网长管好的生长繁殖。此外，根据内禀增长率，建立了麦无网长管蚜种群对干扰的反应时间公式。
Aeeording to the raw data of four generations of Metopolophium dirhodum (Walker) which were obtained by feeding continuously at the natural temperature,its life table and feeundity is table were established.The results show that the populatiun inerease index(I= 26. 4693)and the intrisic increase rate (rm= 0.1395 ) are the highest at 18. 3℃, in other words,this temperature is the optimum temperature for the growth,development and fecundity of Metopolophium dirhodum. In addition,survival rate curve given in this paper resembles Deevey Ⅲ type in shape. Accordign in the intrinsic inerease rate,the theoretical formulas to calculate responsive time of disturbonce were provided in this peper.
基金
贵州省教委科研基金
关键词
小麦
麦无网长管蚜
实验种群
生命表
Metopolophium dirhodum
experimental population
life table
responsive time
