摘要
研究了第三代棉铃虫的百株累计卵量与夏玉米和夏大豆产量的关系，分别组建了它们的相关式。分析提出推广的防治指标分别为百株累计卵量６０ 粒和５５ 粒。
The relations of accumulative eggs mass of Helicoverpa armigera (Hübner) per 100 plants and yield of summer maize and summer soybean were studies in tis paper,and their regression equations were estabished respectively.Based on these equations,their control criteria to spread were suggested as 60 eggs and 55 eggs per 100 plants respectively.
出处
《山东农业大学学报（自然科学版）》
CSCD
1999年第3期277-279,共3页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
第三代棉铃虫
夏玉米
夏大豆
防治指标
Helicoverpa armigera (Hübner)
summer maize
summer soybean
control criteria
