摘要
利用作用因子组配的生命表和种群系统控制理论,对沙芥田菜蛾自然种群和实验种群进行比较研究。结果表明:菜蛾自然种群的种群趋势指数I为28.98,世代总存活率0.15%。实验种群的种群趋势指数I为77.45,世代总存活率为0.41%;自然田中“捕食及其它”的控制指数最大,为6.99;其次是寄生性天敌的控制指数,为3.44。
By means of the life table of acting factors combinations and the theory of modem population system control, were compared the life table of nature population and life table of lab population of Plutella xylostella L.The results showed that population trend index of the lab population was 77,45, and the total survival rate of generation was 0.41. Population trend index of the nature population was 28.98, and the total survival rate of generation was 0.15.EIPC of ＂Praying and others ＂ was the biggest in the nature filed, it was 6.99 and secondly was the parasitic, EIPC was 3.44.
出处
《安徽农业科学》
CAS
北大核心
2006年第17期4340-4341,4344,共3页
Journal of Anhui Agricultural Sciences
基金
教育部科学技术研究重点项目(206148)
关键词
沙芥田
菜蛾
自然种群
生命表
Pugionium comutum field
Plutella xylostella L.
Nature population
Life table
