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甘薯是一种高产作物,在我国很多地区,并且还是一种主要食粮。它也是酒精工业的良好原料。在我国广大的土地上,从东北到广东,都有栽培。我国栽培甘薯,至少已经有了几百年的历史。20余年以前,日本帝国主义者侵入东北以后,把大量的日本甘薯种根引种到我国东北的辽宁一带,同时也把甘薯黑斑病带到我国来。甘薯生了黑斑病就长出圆圆的“黑疤”,容易腐烂,长了“黑疤”和烂了的甘薯,不但人不能吃,也不能喂牲口,牛吃了会中毒、气喘以至死亡。
Sweet potato is a high-yielding crop, and it is still a major staple food in many areas of our country. It is also a good raw material for the alcohol industry. In the vast land of our country, from the northeast to Guangdong, we have cultivated. The cultivation of sweet potatoes in China has been at least a few hundred years old. More than 20 years ago, after the Japanese imperialists invaded the northeast, they introduced a large amount of Japanese sweet potato roots to Liaoning Province in the northeast of China. They also brought sweetpotato black spot disease to China. The sweet potato that grew black spotted grows a round “black cricket”. It is perishable. It has long “black pods” and rotten sweet potatoes. Not only people can’t eat, they can’t feed animals, and cows eat poisoning and asthma. death.