麦田沟金针虫种群垂直分布与夏眠的生态特性及其与防治的关系

Ecological Characters of Vertical Distribution and Aestivotion of Wireworm Population(Pleonomus conaliculatus Fald.)in Wheat Field and Their Relationship to Its Control.

麦田沟金针虫种群垂直分布与夏眠的生态特性及其与防治的关系罗益镇，牛赡光，龙岩（山东省农科院植保所，济南２５０１００）（山东省膝州市植保站，２７７５００）ＥｃｏｌｏｇｉｃａｌＣｈａｒａｃｔｅｒｓｏｆＶｅｒｔｉｃａｌＤｉｓｔｒｉｂｕｔｉｏｎａｎｄＡｅｓｔ...

he seasonal dynamics of vertical distribution and diapause syndrome of aestivation of wireworm in wheat field were investigated during 1988-1990.According to the population percentage in upper soil layer,its activity peaks were present in early spring and early summer,which synchronized phenologically with the growing stage of wheat and seedling stage of corn,respectively.During seedling stage of wheat in autumn,wireworm population in upper soil layer was the lowest of the year.Aestivation occured at the older,fully de-veloped larvae stage,which was sensitive to higher temperature stimulus.The duration of aestivation per-sisted through autumn to early winter.Control measures were conducted in wheat field in accordance with these ecological characters and proved successful.