摘要
１９９１～１９９２年在陕北和关中系统调查，初步查明芦笋小管蚜（ＢｒａｃｈｙｃｏｒｙｎｅｌｌａａｓｐａｒａｇｉＭｏｒｄｖｉｌｋｏ）的天敌有４０种，其中蚜茧蜂２种，蚜霉菌１种，瓢虫１１种，草蛉４种，食蚜蝇７种，捕食蝽５种，蜘蛛１０种。主要类群为瓢虫，陕北以多异瓢虫Ｈｉｐｐｏｄａｎｉｉａ（Ａｄｏｎｉａ）ｖｅｒｉｅｄａｔａ（Ｏｅｚｅ）为主，关中的七星瓢虫ＣｏｃｃｉｎｅｌｌａｓｅｐｌｅｍｐｕｎｃｌａｌａＬ．和异色瓢虫Ｈａｒｎｉｏｎｉａａｘｙｒｉｄｉｓ（Ｐａｌａａｓ）最多。陕北的天敌数量比关中多１．１８倍。天敌高峰关中为６月中旬，陕北为７月１０日左右，略晚于蚜虫高峰。异色瓢虫捕食芦笋小管蚜的功能反应研究表明，随着虫龄的增大，瓢虫对猎物的处理时间缩短，取食量增大。成虫处理猎物的时间极短，但取食量则较低。
species of the natural enemies of the asparagus aphid,Brachyco-rynella asparagi Mordvilko were found between 1991 and 1992. There were two kindsof aphid parasites, one kind of Entomophthora spp.,eleven kinds of Coccinellidae , fourkinds of Chrysopidae,seven kinds of Syrphidae,one kind of Miridae,one kind of Ly-gaeidae , two knids of Nabidae ,one kind of Anthocoridae and ten kinds of spiders. TheCoccinellidae accounted for the most. The main enemy in North ShaanxiProvince isHippodamia ( Adonia)Veriedata(Oeze), but in the centre of Shaanxi was Coccinellaseptenlpunctata L. and Harmonia axridis (Palaas).The peak period was in the middleof June in the Centre and the 10th of July in the North,with the latter occurring laterthan the peak of asparagus aphid.The number of natural enemies in North Shaanxi was1. 18 times more than that in the centre of Shaanxi. The study of the functional respons-es of lady birds(Harmonia axyridis)to the aphid indicated that the appetite of the grow-ing Coccinellidae increased,though it shortened its meal time;while the appetite of theadult decreased, though with the least meal time.
出处
《西北农业大学学报》
CSCD
1995年第5期39-43,共5页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
关键词
芦笋
害虫
小管蚜
天敌
消长规律
异色瓢虫
Asparagus,Brachycorynella asparagi,biology,ecology,asparagus pest
