摘要
研究表明，烟青虫／棉铃虫混合种群卵在春烟田６～８月份始终呈聚集分布。混合种群卵在烟株上的分布上部明显多于下部，打顶后，约有９５％的卵集中于上部８片叶上。６月份田间调查卵密度时，每块四查１００株，每株仅查上部８片叶即可（Ｄ＝０．１５）。
The results showed that the eggs of Helicoverpa assulta/H.armigera gave an aggregate distribution in spring tobacco field from June to August.There are more eggs onhigher leaves of the tobacco plant than on the lower leaves.And 95% of eggs were deposited on the first to the eighth leaflets counted from the top of the plants after topping.It gave a,satisfactory estimate(D=0.15)to check 100 plants in each field, takingonly the eggs on the upper 8 leaves into account in June.Note:The authors of this article include also:Xie Deping Wang Yanxuan Wang Xue fen Liu Jianan Peng Guofang
出处
《中国烟草学报》
EI
CAS
CSCD
1995年第1期23-29,共7页
Acta Tabacaria Sinica
基金
中国烟草总公司"全国烟草昆虫调查研究"项目
关键词
烟青虫
棉铃虫
混合种群
分布
Helicoverpa assulta,Helicoverpa armigera,Mixed community,Distribution
