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胡桃豹夜蛾Sinnaextrema(Walker)是近年来在闽北出现的一种危害青钱柳的新害虫。 1年发生 6代 ,以老熟幼虫在矮小灌木、杂草及枯枝落叶中结茧化蛹越冬。幼虫共 6龄 ,末 2龄为暴食期。发生与气温、海拔、坡向及物候关系密切。越冬代成虫盛发期林间施放“74 1”烟剂 ;80 %敌敌畏乳油 1 0 0 0～ 1 2 0 0倍喷射 3～ 4龄幼虫 ;于第 1代、第 6代老熟幼虫下树结茧高峰期之前 ,地面喷射 50 %辛硫磷乳油 1 0 0 0～ 1 50 0倍或4 0 %甲基异柳磷乳油 1 0 0 0～ 1 50 0倍液 ,或喷布白僵菌粉剂 ,这些方法均可有效防治此虫
Sinoptera lepidoptera Sinnaextrema (Walker) is a new pest that endangers Cyclocarya glabra in northern Fujian in recent years. Six generations occur in one year, with the mature larvae cocooning in dwarf shrubs, weeds and litter overwintering. A total of 6 larvae, the last 2 years of gluttony period. Occurrence and temperature, altitude, aspect and phenology are closely related. The overwintering generation adults sprayed with “74 1” smoke agent in the forest during the full-bloom period; the third to fourth instar larvae were sprayed with 80% dichlorvos EC at 1000 ~ 1200 times; Before the peak of cocoon, spray 50% phoxim EC 100% or 400% methyl isoflavone EC 100% to 150O times, or spray Beauveria bassiana Powder, these methods can effectively prevent this pest