【摘要】 2000～2001年,对延边大学农学院试验苹果梨园昆虫种类进行了普查,并对历年来梨园害虫发生情况进行了咨询和有关资料的查询工作.初步查明,该生态系统内主要昆虫种类包括昆虫纲的9个目、33个科、47个种和蛛形纲的2个目.主要害虫为梨木虱、梨黄粉蚜、梨叶锈螨、梨二叉蚜、红蜘蛛类等刺吸式口器害虫.主要天敌为异色瓢虫、龟纹瓢虫以及食蚜蝇等.更多还原

【Abstract】 The species of insects were investigated in the apple-pear orchard of agricultural college of Yanbian University from 2000 to 2001,the case of pest occurrence was consulted over the years and the related materials were inquired. The result showed:there were 9 orders,33 families,47 species of Insecta and 2 orders of Arachnoidea in the ecosystem. The main pests were Psylla chinensis Yang et Li,Aphanostigma iaksuiense,Eriophyes pyri Pagenst,Schizaphis piricola and its classes. The main natural enemies were Leis axyridis,Propylaea japonica etc.更多还原