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本文调查了麦长管蚜(Macrosiphum avenae F.)、麦二叉蚜(Schizaphis graminum Rond)和禾縊管蚜(Rhopalosiphum padi L.)的田间消长规律和种群数量变动因素。麦二叉蚜发生最早,一般在小麦返青期即有发生,小麦灌浆乳熟期以后,因气候及营养条件惡化,蚜量急剧下降。麦长管蚜在小麦拔节期始见有翅成蚜,孕穗、抽穗以后,蚜量一直稳定上升,灌浆至乳熟初期蚜量急剧增长达到高峰。此后驟减。禾縊管蚜最耐高温高湿,一般小麦揚花期以前蚜量少,麦收前7～10天内剧增达高峰。在小麦各生育期,三种麦蚜长管蚜始終占总蚜量的70%以上,多者100%,是麦田蚜虫的优势种。
In this paper, the field growth and decline and population variation of Macrosiphum avenae F., Schizaphis graminum Rond and Rhopalosiphum padi L. were investigated. The earliest occurrence of wheat aphid occurred in wheat, usually in the turning-back period of wheat occurs, milky grouting after wheat, due to deteriorating climate and nutritional status, aphid sharp decline. Wheat aphid saw a winged aphid at the jointing stage of wheat, booting, after heading, the amount of aphid rose steadily, and the amount of aphids rose sharply at the beginning of filling. Since then plummeted. Aphis gossypii most resistant to high temperature and humidity, the general wheat flowering aphids less before the wheat crop before the 7-10 days surge up to the peak. In wheat growth period, the three kinds of wheat aphid long-aphid population accounted for more than 70% of the total amount of aphids, more than 100%, is the dominant species of wheat aphids.