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1.甘薯黑斑病 1937年由日本鹿几岛传入我国辽宁省,随着某些感了该病的甘薯品种推广而逐渐扩散至全国甘薯产区,不仅造成苗期烂床,窖藏期烂窖,而且牲畜吃了带病的薯块还会中毒死亡。仅1963年,我省因此病烂薯约6亿斤,占甘薯总产的10.8％,剑阁、广安、苍溪三县牲畜吃了病薯,有317头耕牛中毒,其中死亡166头,有102头生猪中毒,其中死亡64头。1974年全国统计,因此病危害烂掉甘薯200多亿斤。此病已遍及我省甘薯产
1. sweet potato black spot introduced by the Japanese deer islands in 1937 in Liaoning Province, China, with some of the sweet potato varieties spread the disease and gradually spread to the sweet potato production areas, not only caused the bed seedling bed, cellar rotten Cellar, and the animals eat sick tubers will be poisoned death. In 1963 alone, our province lost about 600 million jin of diseased tubers, accounting for 10.8% of the total output of sweet potatoes. A total of 317 cattle were poisoned by livestock in Jiange, Guang’an and Cangxi counties, of which 166 were dead with 166 102 pigs were poisoned, of which 64 were dead. National statistics in 1974, so the disease endanger sweet potato more than 200 billion jins. The disease has been throughout the sweet potato production in our province