晚疫病是武威马铃薯生产上的一个严重问题。它不仅大大降低马铃薯的单位面积产量,而且还导致薯块在田间和贮藏期间的大量腐烂损失。由于这一病害的发生和流行与环境条件有着复杂的关系,因而必须掌握其发生与流行的规律才能够作出有效的防治措施。为此,我 Late blight is a serious problem in Wuwei potato production. It not only greatly reduces the potato yield per unit area, but also leads to a large amount of decay loss of potato tubers during the field and during storage. Because of the complex relationship between the occurrence and prevalence of epidemic diseases and environmental conditions, the occurrence and prevalence of the disease must be mastered to make effective prevention and control measures. For this, me