云形病是我县水稻中后期叶部的主要病害。药剂防治已成为控制病害蔓延、保叶增产的关键措施之一。为筛选有效药剂进行防治及明确不同施药次数对云形病的防治效果,进行了本试验。 Cloud-shaped disease is the main disease in the middle and late leaves of rice in our county. Chemical control has become one of the key measures to control the spread of diseases and increase the yield of leaves. In order to screen for effective agents to prevent and cure and to determine the effect of different doses on the prevention and cure of the disease, the experiment was conducted.