番茄田二代棉铃虫发生规律及药剂防治
Occurrence and chemical control of the second generation of cotton bollworm(Helicoverpa armigera) in tomato field.
王德旭;张伟;姜振祥;苏伟功
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作者单位：山东省莱西市植保站,莱西266600
中文关键词：番茄;棉铃虫;发生规律;防治
英文关键词：tomato; cotton bollworm (Helicoverpa armigera); occurrence; chemical control
中文摘要：第 2代棉铃虫Helicoverpaarmigera是危害番茄最严重的世代 ,95 %左右的卵产在番茄植株顶尖至第 4复叶层的嫩梢、嫩叶、果萼和茎基上 ,6月20日至7月5日累计平均每株落卵 32.8粒。在番茄上第 2代棉铃虫的卵量和幼虫量与第 1代蛾量密切相关 ,卵量 (Y1)与
英文摘要：The damage of the second generation cotton bollworm to tomato is much serious in Laixi, Shandong Province. 95% eggs is laid on the tender top, tender calyx and the base of stem. There are 32.8 eggs on average each plant from June 20 to July 5. The relatio