薏苡黑粉病是系统性侵染病害,造成薏苡产量下降,米仁质量变劣。病害的初次侵染源来自带菌种子和土壤;孢荷量大、播种期土壤温度低、种子覆土过厚、病害发生重;土壤含水量对病害发生程度的影响作用较小。用25％百理通可湿性粉剂、25％百坦粉剂和50％多菌灵可湿性粉剂拌种,用量为种子重量的0.2—0.3％,防病效果达85.4—100％,对种子发芽和幼苗生长均无药害。 Coix powdery mildew is a systemic infection disease, resulting in decreased production of Coix, poor quality kernels. The primary infection source of the disease came from the contaminated seeds and soil; the spore amount was large, the temperature of the soil was low at the sowing stage, the overburden of the seed was too thick and the disease was heavy; the effect of soil water content on the degree of the disease was small. 25% Baitong pass WP, 25% Baitan powder and 50% carbendazim wettable powder seed dressing, the amount of 0.2-0.3% by weight of the seeds, the anti-disease effect of 85.4-100%, the germination of seeds and No growth of seedlings injury.