云南松毛虫发生期与危害程度预测预报研究

Forecast of Occurrence Stage and Harm Extent of Dendrolimus houi

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.