宁夏燕麦主要虫害发生种类、规律及危害研究

Varieties,Laws and Hazards of Main Pest of Oats in Ningxia

通过系统调查和大面积普查发现,宁夏燕麦种植中的主要害虫有麦二叉蚜、麦长管蚜、禾谷缢管蚜、双斑萤叶甲、灰飞虱等,其中以麦二叉蚜危害最重,危害株率平均为70%~85%,严重的达到100%;双斑萤叶甲、禾蓟马、灰飞虱等虫害虽然也普遍发生,但相对蚜虫危害较轻。燕麦害虫的天敌昆虫主要以瓢虫为主,其中七星瓢虫和异色瓢虫为优势种。

Based on systematic investigation and large scale census,the main pests of oats include Schizaphis graminum,Macrosiphum granarium,Rhopalosiphum padi,Monolepta hieroglyphica,Laodelphax striatellus and etc..Among them,schizaphis graminum is the most serious.The rate of the toxic plants is between 70%and 85%,and even reached 100%.Although Monolepta hieroglyphica,Frankliniella tenuicornis Laodelphax striatellus are common,they are less harmful than aphids.Their natural enemies are ladybirds,especially the Coccinella septempunctata and Harmonia axyridis.