摘要
通过组建斜纹夜蛾自然种群连续世代生命表,对斜纹夜蛾的种群动态进行了研究.结果表明:浙南菜区大田斜纹夜蛾1～5代累计死亡率分别为93.6%,98.5%,97.2%,99.1%,99.99%.1～4代种群趋势指数分别为17.41,4.62,5.63,0.55,明确了1～5代斜纹夜蛾不同虫态的发育历期.并探讨了利用生命表对斜纹夜蛾发生量和发生期的预测预报应用,为斜纹夜蛾预测预报工作提供参考.
The this paper, the population dynamics of Spodoptera litura was studied by establishment of continuous generation life table of Spodoptera litura. The cumulative death rates of the first, second, third, forth and fifth generations were 93.6%, 98.5%, 97.2%, 99.1%, and 99.99%, respectively. The indexes of population trend of the first, second, third, and fourth generations were 17.41,4.62, 5.63, and 0.55, respectively. This study determined development lasting periods of different metamorphosis for the first, second, third, fourth , and fifth generations of Spodoptera litura. This paper studied the prediction and forecasting of emergence sizes and emergence periods of Spodoptera litura by using the life table.
出处
《浙江农业学报》
CSCD
2005年第4期203-206,共4页
Acta Agriculturae Zhejiangensis
基金
浙江省科技重点项目(2003C22027)
温州市科技重点项目(N2001A31)
关键词
斜纹夜蛾
生命表
预报
Spodoptera litura
life table
prediction
