浙江柑桔蚜虫优势种群的演变及桔－棉蚜猖獗因子分析

The succession of the predominant citrus aphids and rampant causes of Aphis gossypii in Zhejiang

１９８７～１９９４年经对浙江省主要桔区的调查结果，浙江省柑桔蚜虫有７种，分别为桔－棉蚜、绣线菊蚜、桔蚜、桔二叉蚜、桃蚜、樟修尾蚜和芒果声蚜，其中桔－棉蚜已上升为柑桔蚜虫的优势种群。桔－棉蚜上升为柑桔蚜虫优势种群的原因有３：（１）感虫品种温州蜜柑的大量栽培；（２）桔－棉蚜比桔蚜对桔园常用有机磷农药耐药性好；

species of aphids were found through the survey of aphids attacking citrus plants in Zhejiang during 1987-1994. The succession of the predominant citrus aphids was observed and Aphis gossypii Glover has become the predominant species. By investigating and analysing, the rampant causes of A. gossypii were mainly as follows: (1) spreading the variety of citrus Citrus unshiu which was easily injured by aphid. (2) A. gossypii was more resistant to Omethoate than Toxoprera citricidus. (3) Most pesticide killed more the natural enemies of aphid, but could not reduce the aphid population.