摘要
用小地老虎系统测报资料和有关气象材料做逐步回归统计分析，得到发生程度（ｙ１）的预报模型为ｙ１＝０．０１３４ｘ１－０．０２０１ｘ２＋２．３４７７±０．４３６１，历年符合率为１００％；田间二龄幼虫盛发日（ｙ２）的预报模型为ｙ２＝０．３４２５ｘ１＋０．３２６０ｘ２＋２８．６３６７±２．５５１２，历年符合率在８１．８２％以上。
The incidence model of Agrotis ypsilon was developed according to correlation analysis between monitoring data and meteorological data:y1=0.0134 x1-0.0201x2+2.3477t±0.4361,correlation rate with previous records is 100%.The incidence model for forecasting the population peak of 2hd instar larvae is y2=0.034 25x1+0.326 0x2+28.6356 7±2.551 2,correlation rate with previous records is above 81.82%.
出处
《植保技术与推广》
1996年第6期7-8,共2页
Plant Protection Technology and Extension
关键词
小地老虎
发生程度
预测模型
Agrotis ypsilon incidency forecasting model
