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近年来,玉米大斑病发生较普遍。患病的玉米叶片失去了光合能力,使千粒重下降,不仅使玉米减产,且质量也不好。目前对这个病还没有特效药,所以必须做好预防。一、秋收后,搂净并烧掉残存在田间的玉米病叶。在发病的地块,翻地前要将地面上的病叶全部搂净,聚成小堆彻底烧掉。二、选择抗病品种。铁岭县熊官屯乡上峪村谭延昌所种的“M017×E28”玉米,每株叶上只有少量病斑,受风灾未倒伏,亩产1,610斤;而同样条件下的“丹玉11”玉米,发病率占叶面积的40％,受风灾倒伏41％,亩产1,100斤。可见选种抗病品种很重要。
In recent years, the occurrence of maize leaf spot is more common. Sick corn leaves lose their ability to photosynthesis, so that 1000-grain weight decline, not only to cut corn production, and the quality is not good. At present, there is no cure for this disease, so prevention must be done. First, the autumn harvest, hug net and burn the corn leaves remaining in the field. In the disease plots, turn the ground before the sick leaves all the net Lou, gathered into a small pile thoroughly burned. Second, choose resistant varieties. “M017 × E28” maize, planted in Tanyuchang Village, Shangyu Village, Xiongguantun Township, Tieling County, had only a few lesions on each leaf and did not lodging by the storm, yielding 1,610 cattons per mu. Under the same conditions, “Dan Yu 11” Rate of leaf area accounted for 40%, 41% by the winds lodging, yield 1,100 pounds. Shows that selection of resistant varieties is very important.