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纵卷叶螟绒茧蜂Apanteles cypris Nixon是稻纵卷叶螟幼虫的重要天敌,据张孝羲等在江苏东台调查,在13种幼虫天敌中,此蜂的寄生率最高,1976年稻纵卷叶螟第二、三代,平均寄生率分别为20％、32.6％,但其寄生率在代别间、地区间波动较大。为了探明纵卷叶螟绒茧蜂寄生率消长原因,并为进一步保护及利用天敌资源提供依据,在1978—1980年间,对其寄生习性进行了研究。
Apanteles cypris Nixon is an important natural enemy of the larva of the Cnaphalocrocis medinalis. According to Zhang et al.’s investigation in Dongtai, Jiangsu Province, among the 13 larvae of natural enemies, the parasitism rate of this bee is the highest. In 1976, In the second and third generation, the average parasitism rates were 20% and 32.6% respectively, but the parasitism rate fluctuated greatly between different regions and regions. In order to find out the reasons for the decline of the parasitism rate of the Cnaphalocrocis medinalis and to provide a basis for further protection and utilization of natural enemy resources, parasitic habits were studied during 1978-1980.