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山西省屯留县地处上党盆地,光照充足,土地肥沃,无霜期长达160d,种植玉米具有得天独厚的自然优势。近年,病害有加重趋势,严重的达10%,对玉米的产量造成很大损失。1病害发生特点玉米丝黑穗病在我国春玉米种植区普遍发生,在东北、华北北部、西北和西南丘陵地区发生较严重,田间发病率2%～8%,重病田发病率60%～70%,造成严重的产量损失。
Tunliu County, Shanxi Province is located in the Upper Party Basin, adequate sunshine, fertile land, frost-free period up to 160d, planting corn has a unique natural advantage. In recent years, the disease tends to aggravate, reaching a serious 10%, causing a great loss to the yield of corn. 1 Disease Occurrence Corn head smut commonly occurs in China’s spring corn growing areas, and occurs more severely in the northeast, northern North China, northwestern and southwestern hills, with the incidence of 2% -8% in the field and 60% -70% of the severe diseases %, Causing serious loss of production.