小麦穗期赤霉病是涪陵地区小麦的主要病害之一。近几年来,流行频率增高,为害逐年加重,1975年病害流行,全区发病面积14万余亩,约占当年小麦面积的10％,损失小麦328万斤;1977年病害再度流行,全区发病面积达76万余亩,占当年小麦面积的32.4％,损失2700万斤,平均每亩减产23.3％。 为给小麦赤霉病的中期预测提供依据,近几年来,我们在我校农场与涪陵县世忠公社设置预测圃,预测大田时对小麦赤霉病流行的几个主要因素,包括小麦扬花期、田间稻茬带菌量动态、空中孢子的消长情况、病害的始病期、流行程度以及病害对小麦的影 Wheat ear blight is one of the main diseases of wheat in Fuling area. In recent years, the epidemic frequency increased, the harm increased year by year, the prevalence of disease in 1975, the disease area of ​​more than 140,000 acres, accounting for about 10% of wheat area, loss of 3280000 kilograms of wheat; disease re-epidemic in 1977, the region onset An area of ​​760000 acres, accounting for 32.4% of the wheat area, loss of 27000000 jin, an average of 23.3% reduction per mu. In order to provide the basis for the medium-term forecast of wheat scab, we set up forecasting nurseries in our school and Fuling Shizhong commune in recent years to predict the prevalence of wheat scab in the field, including wheat flowering stage , The dynamic of rice stubble in the field, the growth and spread of aerial spores, the onset period of the disease, the epidemic degree and the influence of the disease on the wheat