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红薯是我县主要粮食作物之一,历年来种植面积较广,但由于红薯黑斑病的严重危害,每年损失很大。据调查,仅窖藏期腐烂,常年一般损失在20％左右,少数生产队达50％以上,有的甚至全部烂掉。此外,在苗床期和大田期,红薯黑斑病也能造成不同程度的危害,直接威胁着我县的红薯生产。因此,采取综合
Sweet potato is one of the main grain crops in our county. It has a relatively large planting area over the years. However, due to the serious damage caused by black spot of sweet potato, the annual loss is very large. According to the survey, only the cellar decay period, perennial general loss of about 20%, a few more than 50% production team, and some even all rot. In addition, in the seedbed and field, sweet potato black spot disease can also cause different degrees of harm, a direct threat to my county’s sweet potato production. Therefore, take comprehensive