摘要
绘制了德昌松毛虫化蛹及成虫羽化发育进度“S”形曲线 ,计算出了各虫态的平均发育历期和各主要虫态间的期距、标准差及有效虫口基数法的基本参数 。
The'S'curves of pupating progression and emergence progression of Dendrolimus punctatus tehchangensis are described,the average development periods of various stages,occurrence intervals and their standard variations between main stages,basic parameter for forecasting occurrence quantity are computed.Based on these,the preliminary forecast models for occurrence period and quantity have been proposed.
出处
《林业科技》
北大核心
2003年第2期22-24,共3页
Forestry Science & Technology
基金
云南省应用基础研究重点基金项目 ( 98C0 0 7Z)
关键词
德昌松毛虫
发生期
发生量
预测预报
Dendrolimus punctatus tehchangensis Tsai et Liu
Occurrence period
Occurrence quantity
Forecast
