全蚀病是一种危险性病害,寄生多种禾本科作物和杂草,但主要为害麦类作物,特别是小麦。1983年,铁岭县发现个别地块玉米提早枯死,秋后刨根调查,根茬变色。1984—85年这种现象又有所扩大,为害加重。1985年铁岭县农业技术推广中心的7亩试验地,严重早衰枯死,秋后调查500株,大部分根茬变色,其中根基变黑、须根腐烂占3—5％。铁岭县红旗等5个乡(面积达670 Total eclipse is a dangerous disease that infests many grasses and weeds, but mainly crops of wheat, especially wheat. In 1983, Tieling County found that individual blocks of corn early withered, autumn roots survey, root stubble discoloration. This phenomenon has been expanded again and again in 1984-85. In 1985, Tieling County Agricultural Technology Promotion Center of 7 acres of land, severe premature death dead, 500 were investigated after the fall, most of the stubble discoloration, in which the foundation black, fibrous decay accounted for 3-5%. Tieling Red Flag 5 townships (an area of ​​670