贵州马铃薯病害调查研究

为了明确贵州马铃薯生产中病害的发生和流行规律，2008-2010年对贵州马铃薯主产区病害发生及流行情况进行调查研究。结果发现，有19种的病害为害马铃薯，包括真菌病害8种，细菌病害4种，病毒病4种，放线菌病害1种，非侵染性病害2种。其中发生较为普遍的病害有晚疫病、生理性叶斑病、早疫病、病毒病（潜隐花叶病毒病）、青枯病、炭疽病和生理性早衰等7种，马铃薯晚疫病发生和危害最重。各种病害的发生时间与严重程度取决于当地气候条件、品种特性和播种时期。

The Investigation of Potato Disease in Guizhou

In order to find out the occurrence and prevalent of potato diseases, the investigation of potato diseases was undertaken in potato producing areas in Guizhou from 2008 to 2010. 18 disease have been found on potato. 7 of them are fungous diseases and 4 of them are bacterial diseases and 4 of them are virus diseases and 1 of them is actinomyces and 2 of them is non-infectious diseases. Late blight, physiological leaf spot, early blight, PSV, bacterial wilt, anthracnose and physiological premature senescence were popular occurrence in Guizhou. However, late blight was most seriously disease on potato. The time and severity level of the occurrence and prevalent of potato diseases are determined by climate condition, variety and sowing date.