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小麦雪腐叶枯病,1981年在达县地区少数麦田中发现,1983年冬,1984年春,我区各县普遍发生,少数乡、村的个别田块发病较为严重。我们在达县罗江乡太平、观音、王家山等村共调查225块麦田,发生雪腐叶枯病的75块,占调查数的33％。其中严重受害的有13块,占17％;中等受害的47块,占62％;受害较轻的15块,占20％。从调查数据看出:田里受害程度重于地里,沟田重于梯田,下湿田重于一般较为干燥的田,下大雪前麦苗长势过旺的重于老健的麦苗。品种发病情况是,“绵阳11号”的发病株率为69％,病情
Wheat snowy leaf blight was found in a few wheat fields in Daxian in 1981. In the winter of 1983 and the spring of 1984, various counties in our district were commonly found. The incidence of individual plots in a few villages and villages was more serious. We investigated 225 wheat fields in Taiping, Guanyin and Wangjiashan villages in Daxian County, and 75 of them were snowy leaf blight, accounting for 33% of the total number of inquiries. Of these, 13 were seriously affected, accounting for 17%; 47 were moderately affected, accounting for 62%; and 15 were less harmful, accounting for 20%. According to the survey data, the degree of victimization in the field is heavier than that in the ground. The ditch is more important than the terraced fields. The wetland is heavier than the generally dry fields. The wheat seedlings under heavy snowfall are heavier than the old ones. The incidence of varieties is, “Mianyang 11” incidence of 69% of strains, the disease