摘要
运用发育进度法和期距法 ,提出了云南松毛虫 ( Dendrolimushoui Lajonquière)发生期初步测报式 ;编制出了云南松毛虫预测预报虫灾级数表 ,进而提出了云南松毛虫危害程度初步测报式。
The preliminary forecast formula of occurrence stage of Dendrolimus houi was put forward by means of development rate and stage distance. The preliminary forecast formula of harm extent was also developed on the basis of insect plague progression table of Dendrolimus houi . The results will provide scientific basis for deciding better control time and whether demanding control or not as well as how to control.
出处
《西北林学院学报》
CSCD
北大核心
2002年第2期54-57,共4页
Journal of Northwest Forestry University
基金
云南省应用基础研究重点基金项目 (98C0 0 7Z)
关键词
云南松毛虫
发生期
危害程度
预测预报
Dendrolimus houi Lajonquière
occurrence stage
harm extent
forecast