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近年来,随着永年县露地及保护地黄瓜的迅速发展,黄瓜细菌性圆斑病发生呈逐年上升危害趋势,加之瓜农常常把它和黑斑病、黑星病、霜霉病相混而贻误防治,造成了一定的经济损失。据永年县植保站多年调查表明:该病从保护地到露地均有发生。如
In recent years, with the rapid development of the open field in Yongnian County and the protection of cucumbers, the occurrence of bacterial circular spot in cucumber has been increasing year by year. Coupled with the fact that melon farmers often mix it with black spot, scab and downy mildew, Prevention and control, resulting in a certain economic loss. Yongnian County, according to years of plant protection station survey showed that: the disease from the protection of land to open have occurred. Such as