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甘藷黑斑病,已在11个省份发现,各地反映苗床腐烂、植后死苗、贮藏时坏窖,主要是此病为害的结果,防治此病成了目前增产甘薯的主要关键,甘薯由于栽培季节及栽植方法的不同,受害的情况有显著差异:用剪蔓法繁殖的夏藷很少受黑斑病的侵害;受害最严重的是春薯。现在疫区春薯,差不多全不敢贮藏,否则入窖之后即要坏掉,因此防治对象主要是春薯。而春薯插植时期早,必须经过苗床育苗的阶段,病害的根源也就在这个时期造成的。防治苗期黑斑病,是整个防病措施中最主要的
Sweet potato black spot disease has been found in 11 provinces, reflecting the decay of seedbed around, after planting dead seedlings, storage cellar, mainly the result of the disease damage, the disease has become the key to the current production of sweet potato, sweet potato due to cultivation Different season and planting methods, there are significant differences in victimization situation: sweet potato which is propagated by shearing method is rarely infested by black spot disease; and the hardest hit is spring potato. Now the affected area of sweet potato, almost all not dare to store, or into the pit to be broken, so the main control object is the spring potato. The planting of sweet potato early, must go through the seedling stage nursery, the root causes of the disease is also caused during this period. Prevention and treatment of seedling black spot disease is the most important preventive measures