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不同地区玉米纹枯病产量损失测定结果表明,产量损失与病情严重度级别之间存在着显著的直线相关,严重度每提高一级,产量损失增加约10％左右,在产量损失的构成中,千粒重下降处于主导地位,粒数的减少其次;始病愈早,发病愈重,相应的产量损失也愈大。不同地区,播期不同,发病期亦不同。从生育期来看,却是基本一致的,玉米抽雄期为发病始盛期,乳熟期为发病高峰期。品种间发病差异明显,但未发现高抗品种,目前生产上广泛应用的掖单系统杂交组合,中抗至中感,其丰产性较好。增施钾肥112.5～262.5kg能显著地减轻病害和增加产量,可作为防病措施推广应用。另外,大田调查还发现,轮作、间作和控制种植密度能减轻病害发生。
The results showed that there was a significant linear correlation between yield loss and disease severity level in each region. The yield loss increased by about 10% for each level of severity. In the composition of yield loss, Thousand grain weight decline in the dominant position, followed by the reduction in the number of grains; onset earlier, the more serious the disease, the greater the yield loss. Different regions, different sowing dates, the onset period is also different. From the growth point of view, it is basically the same, the tasseling stage of maize tasted the peak period, the milky stage of onset of the peak. Significant differences between the incidence of varieties, but did not find high resistance varieties, the current production of Yedan system widely used in hybrid combinations, the resistance to the flu, its high yield is better. Increasing the potash fertilizer 112.5 ~ 262.5kg can significantly reduce the disease and increase the yield, which can be used as the prevention and treatment measures. In addition, the field survey also found that rotation, intercropping and planting density control can reduce the occurrence of diseases.