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近年来,春蚕豆赤斑病(Botrytis fabae Sardina,B.cinerea Pers)和轮斑病(Cercospora zonata Winter)已成为影响甘肃蚕豆生产的主要病害,且两病均形成叶斑、叶枯以致落叶等症状,每年损失产量约28％～40％,重病年则达50％以上。为了探讨两病对蚕豆的为害损失,拟定科学合理的防治指标,笔者于1993～1994年进行了研究,结果报道如下。 1 研究方法供试品种为临夏尕红蚕豆(Vicia faba var.),小区面积分别为10.5m~2和7.0m~2,重复4～5次,均按随机区组排列。于当年发病初期开始,各处理间隔7～8d施药,均用20％粉
In recent years, Botrytis fabae Sardina (B.cinerea Pers) and Cercospora zonata Winter have become the major diseases that affect the production of Vicia faba in Gansu province. Symptoms, the annual loss of yield of about 28% to 40%, serious illness is reached more than 50%. In order to explore the harm of Vicia faba to two diseases, to draw scientific and reasonable control index, the author conducted a study from 1993 to 1994, the results are reported as follows. 1 Study Methods The tested varieties were Vicia faba var. Linn. The plot area was 10.5m ~ 2 and 7.0m ~ 2, repeated 4 ~ 5 times, all arranged in random block. In the early onset of the year began, the treatment interval of 7 ~ 8d application, are used 20% powder