麦蚜天敌捕食强度的灰色评判

The Grey Judgment on the Predacious Strength of Natural Enemies to Wheat Aphid

利用灰色局势决策理论 ,对两种麦蚜的优势种天敌作了灰色评判。结果表明 ,从捕食强度来看 ,小麦的孕穗期至腊熟期阶段 ,麦长管蚜与麦二叉蚜的优势种天敌依次为 :龟纹瓢虫、草间小黑蛛和八斑球腹蛛。

Based on the grey policy decision theroy,this paper judges on the superior natural enemies of wheat aphid and greenhug.The results show that their superior natural enemies are in order of Propylaca japonica,Erigonidium graminicola and therdion octomaculatum.