摘要
1988～1990年调查结,果以结球甘兰为主的十字花科蔬菜的甘兰蚜在贵阳地区为孤雌胎生,未查到越冬虫源。3月下旬至4月上旬开始出现有翅成蚜,5月上旬至中旬大发生危害。早熟品种可避过为害盛期,摘除脚叶可减轻为害。天敌种类较多,控制作用较大。对40％乐果乳剂已产生抗药性,防效降为70％以下,40％乐果乳剂与2.5％敌杀死乳剂和50％辛硫磷乳剂混配施用的防效达90％以上。选用早熟品种,摘除脚叶,混剂挑治的综合防治可以有效地控制甘兰蚜的为害。
The results of investigation took place in 1988-1990 indicated that cabbage aphid Bravicoryne brassicae (linnaeus) was gynecogenic in cruci-ferae vegetables, mainly in sloid headed cabbage, and never found hibernating egg. The alaiae appeared from the last 10 days of March to first 10 days of April,the outbreak happened from first 10 days to middle of May. The serious damage period cound be avoierl by planting early ripen varieties and bad damage could be decreased by removing basic leaves. Many natural enemies showed obvious action on controling the aphid. The efficiency was over 90% by spraying mixture of 40% Rogor, 2.5% Decis and 50% Phoxim emulsion. The damage caused by cabbage aphid would be successful contro-led with comprehensive management of planting early ripen varieties, removing basic leaves and spraying chemicals.
出处
《贵州农业科学》
CAS
1991年第5期23-27,共5页
Guizhou Agricultural Sciences
关键词
甘兰
甘兰蚜
防治
cabbage aphid
regularty of outbreak} comprehensive management
