摘要
棉铃虫有强烈的趋嫩性，卵散产，８０％以上的卵产于玉米尚未开花的雄穗上。胶东地区秋玉米抽雄盛期，是第三代棉铃虫产卵盛期，而开花盛期，则是卵孵化盛期。多年观察结果表明，第三代棉铃虫在秋玉米上的卵量（ｙ）与第二代蛾量（ｘ）密切相关，其相关式为ｙ＝－３１５．９＋１．７７８３ｘ。第三代棉铃虫幼虫量（ｙ）与第二代蛾量（ｘ）相关式为ｙ＝－３１．３＋０．１３４０ｘ，第三代棉铃虫幼虫量（ｙ）与第三代卵量（ｘ）相关式为ｙ＝２．４２＋０．０９８９ｘ。
elicorerpa armigera has strong tender taxis,oviposits unorganized,more than 80% eggs oriposit on rnbloomed male spikes of corn.The peak earing period of autumn corn is the of the third generation mothes peak ,and the blooming period is the eggs incrbation period.Many years of observation indicate that there is close correlation between egg quantities of the third generation (y)and moth quantities of the second generation (x)on autumn corn,the equation is y=-315y+1.7783x,the correlation equation between larva quantities of the third generation (y)and moth quantities of the second generation (x)is y=-31.3+0.1340x,the equation between the third generation larva quantities (y) and the third generation egg quantities (x) is y=2.42+0.0989x.
出处
《山东农业大学学报（自然科学版）》
CSCD
1998年第1期72-76,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
秋玉米
棉铃虫
生物学特性
测报
autumn corn
Helicorerpa armigera
bilogical property
forecast
