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1975年5月下旬在商县召开了全省玉米大、小斑病协作会。交流了各地情况,传达了全国协作会的精神,修订、落实了全省协作计划,并安排布置了全省玉米大、小斑病统一病圃。大、小斑病是近年来为害日趋严重的玉米病害。我省玉米产区均有不同程度的发生,以商洛地区普遍为害较重。病害流行年份,玉米抽雄后病情迅速发展,灌浆前叶片大量枯死,严重障碍光合作用正常进行,影响玉米灌浆成熟,一般减产一、二成,重病
In late May 1975 held in Shangxian province corn, small spot disease collaboration. Exchanged the situation all over the country, conveyed the spirit of the National Association, revised and implemented the cooperation plan of the whole province and arranged and arranged the unified nursery of large and small spot of maize in the whole province. Large and small spot disease is more and more serious damage to maize diseases in recent years. Maize production areas in our province have varying degrees of occurrence, to Shangluo areas generally harmed. Disease epidemic years, the rapid development of tasseled corn disease, a large number of dead leaves before grouting, serious obstacles to normal photosynthesis, affecting maize maturity, the general cut one or two percent, serious illness