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四、葡萄白腐病:白腐病也(?)腐烂病,是葡萄上的主要病害之一,山东各地葡萄产区均有发生,老园尤其严重,每年对产量损失很大,尤其在阴雨连绵的年份往往造成丰产不丰收的严重局面.
Fourth, grape white rot: white rot (?) Rot disease, is one of the major diseases on grapes, grape production areas throughout Shandong have occurred, the old garden is particularly serious, the loss of large annual yield, especially in the rainy Long years often result in a serious situation of high yield does not harvest.