玉米丝黑穗病俗称乌米,是玉米产区的一种主要病害。多年来,在玉米丝黑穗病上一直没有找到理想的药剂。粉锈宁的问世为玉米丝黑穗病的防治打开了新局面。粉锈宁是一种内吸、高效、低毒、持效期长,在植株内能上下传导、可以防治多种病害的新兴药剂。目前国内四川、江苏等省已有生产。粉锈宁使用方法是,15％可湿性粉剂拌种量为0.3～0.5％(每百斤种子用3～5两药);25％对湿性粉剂拌种量为0.2～0.3％(百斤种子用2～3两药)。此两种用量,大面积的防治效果可达60～80％。拌种方法 Corn smut commonly known as Umi, is a major disease in the corn producing areas. Over the years, maize head smut has not found the ideal agent. The advent of triadimen rust opened a new situation for the prevention and treatment of corn smut. Triadimefon is a new drug that can absorb various diseases by absorbing, high efficiency, low toxicity and long lasting period. At present, Sichuan, Jiangsu and other provinces already have production. Triadimefon is used, 15% wettable powder dressing amount of 0.3 to 0.5% (per kilogram of seed with 3 to 5 two drugs); 25% of wet powder seed dressing amount of 0.2 to 0.3% (2 pounds of seeds with 2 ~ 3 two drugs). The two kinds of dosage, large-scale control effect of up to 60 to 80%. Seed dressing methods