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玉米褐斑病是近几年在玉米上危害程度有加重趋势的一种病害。玉米出苗之时往往适逢高温高湿天气,该天气条件非常利于玉米褐斑病的发生。玉米褐斑病的发病面积有扩大的趋势,如不及时防治,将会严重影响玉米的产量。玉米生长初期发病如果不采取措施,就会造成玉米绝收;中期已长出玉米穗时发病,会使玉米大幅减产;晚期发病,则会出现籽粒不饱满的症状。该病害造成的产量损失,一般为10-15%,严重的可达30-40%左右。但在一些感病品种上,
Corn leaf spot is a disease that aggravates the trend of harm on corn in recent years. When the emergence of corn often coincides with hot and humid weather, the weather conditions are very conducive to the occurrence of corn leaf spot. The incidence of maize leaf spot has an expanding trend, if not timely control, will seriously affect the yield of maize. The early stage of corn growth if you do not take measures, it will result in absolute crop corn; mid-maize spike has been the incidence will make a substantial reduction of corn; late onset, there will be symptoms of insufficient grain. The yield loss caused by the disease, usually 10-15%, severe up to 30-40%. However, in some susceptible varieties,