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本文围绕麦蚜及黄矮病毒在我国北部春麦区越冬及初侵染源问题,提出麦蚜凭借气流携带远距离迁飞传毒,从而使冬春麦区黄矮病发生流行具有联系的结论。文章着重从外来虫源迁飞入境所具有的特征、迁入翅蚜数量消长与天气形势的密切关联等加以分析论证。在此基础上划分了翅蚜的迁出与迁入区域,并通过预测预报的实践,检验了这一发生流行规律的真实性。
This paper focuses on the wheat winter aphid and yellow dwarf virus in winter wheat area wintering and primary sources of infection, the wheat aphids by virtue of the long-distance migratory airborne poisoning, so that the winter and spring wheat yellow dwarf epidemic is linked to the conclusion. The article focuses on analyzing the characteristics of migratory insects entering into the country, the close relationship between the number of migratory winged aphids and the weather conditions. On the basis of this, we divide the area of migrating and migrating into the winged aphids and test the authenticity of the epidemic rule through the practice of forecasting and forecasting.