【作者】 牟吉元； 李照会； 徐洪富；

【Author】 Mu Jiyuan Li Zhaohui Hsu Hongfu (Department of Plant Protection,Shangdong Agricultural University)

【机构】 山东农业大学植物保护系；

【摘要】 七星瓢虫捕食蚜虫量与蚜虫密度呈负加速曲线关系.其成虫捕食粟缢管蚜功能反应式为:1/Na=1.0346×1/N+0.002215,日最大捕食量理论值为451.5头;其三、四龄幼虫和成虫捕食麦长管蚜的功能反应式分别为:1/Na=1.3547×1/N+0.002034,1/Na=0.7803×1/N+0.002430和1/Na=0.8964×1/N+0.001697,日最大捕食量理论值分别为491.6、411.5和589.3头.更多还原

【Abstract】 Relationship between amount of aphids fed by Coccinella septempunctata Linnaeus and population of aphids showed a negative accelerative curve.The functional reaction equation that the adult ladybirds preyed on Rhopalosiphum padi Linnaeus was 1/Na=1.0346×1/N+0.002115,and the daily maximun amount of the aphids fed theoretically by the ladybirds was 451.5 aphids.The functional reaction equations that the third,fourth instar and adult ladybirds preyed on Macrosiphum avenae Fabricius were 1/Na=1.3547×1/N+0.002034,1/Na = 0.7803×1/N +0.002430 and 1/Na = 0.8964×1/N+0.001697 respectively,and the daily maximun amounts of the aphids fed theoretically were 491.6,411.5 and 589.3 aphids respectively.更多还原