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一、试验目的桑黑白粉病每年3-4月份在我区发生非常普遍,严重影响桑树的生长和产量。为了探索有效地控制和防治这种病害的发生和蔓延,我们于1979年四月份在桑树严重发病期间,作了多菌灵药液对防治桑黑白粉病的效果试验。
First, the purpose of the experiment Mulberry powdery mildew 3-April annual occurrence in our area is very common, seriously affecting mulberry growth and yield. In order to explore the effective control and prevention of the occurrence and spread of this disease, we conducted a trial on the efficacy of carbendazim in controlling mulberry powdery mildew in April 1979 during the period of severe mulberry disease.