摘要
据1987～1988年在贵阳观察,柑桔红蜘蛛(Panonychus citri Mcg)在田间发生盛期为6月下旬至7月中旬。以6月下旬至7月上旬为施药适期。间泽钝绥螨(Amblysclus aizawaiEhara et Bhandhu-falck)于7月初开始出现,8月中旬发生数量已超过柑桔红蜘蛛。百叶 数为18.8头,益、害 比为1.34:1。自8月中旬后,间泽钝绥螨一直处于优势,可将柑桔红蜘蛛平均叶片虫数控制在1头以下,是抑制柑桔蜘蛛红的优势天敌。
According to the survey in Guiyang during 1987-1988, the outbreak period of Citrus red spider (Panonychus citri Men) was from end of June to middle of July.A good time for chemical control was from end of June to early of July. Amblysclus aizawai Ehare et Bhandhufalck first occurred in early July, and its population was more than that of Citrus red spider in middle of Auguest, the spider number reached 18.8 per 100 leaves.The ratio of beneficial insect and insect enmy was at 1.34 : 1.The population of the beneficial one still occupied a dominent position after middle of Auguest, the Citrus red spider number could be controlled below 1 per leaf.So the Amblysclus aizawai is a dominent natural enemy to control the Panonychus citri.
出处
《贵州农业科学》
CAS
1990年第1期17-20,共4页
Guizhou Agricultural Sciences
关键词
柑桔
柑桔红蜘蛛
间泽钝馁螨
贵州
生物防治
citrus
citrus red spider
Amblyclus aizawai Ehare et Bhan-dhufalck.
