两种麦蚜天敌对猎物搜寻效应的研究

A Study on the Catching Effect of Two Speies of Natural Enemies for Wheat Aphid

利用Holling模型模拟麦蚜的重要天敌七星瓢虫成虫、幼虫(Ⅰ,Ⅱ)和黑带食蚜绳幼虫的搜寻效应,获取以下参数:24h捕食量上限依次为210头、263头(Ⅰ)、227头(Ⅱ)、238头.功能系数为0.7225,1.1475(Ⅰ),1.1811(Ⅱ),1.1425.捕食1头蚜虫平均花费时间为6.86min、5.48min(Ⅰ)、6.34min(Ⅱ).6.05min.

Based on'the Rolling mode, The catching effect of Coccinella Septempunctata imagoes and larvas (I,II)and Epistrophe balteata larvias has been simulated, from which the following parameter was obtained., the catching- range witkin 24 hours deing 270, 283 (I), 227(II) , 238 nespeetively. The function coefficient was 0.7325, 1.1475 (II), 1.1425, The average time spent on, one aphid was 6.86, 5.48(I) , 6.34(II) , 6.05 minutes.