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马铃薯退化是生产上的一个老问题.据右玉县调查,晋薯1号、雁平1号、同薯5号退化株率分别达到6%、13%和37.8%,病情指数各为3.88%、5.26%和16.5%;而晋薯2号和同薯8号的混合退化率、病情指数分别高达52%与22.5%.一般减产20-50%,重者80%以上.据雁北地区统计,由于马铃薯退化,全区每年损失折合粮食达742万斤.
Potato degeneration is an old production problem.According to the investigation of Youyu County, Jinhu 1, Yanping 1, with potato 5 degenerate strains rate reached 6%, 13% and 37.8%, respectively, the disease index of 3.88% , 5.26% and 16.5%, respectively, while the mixed degradation rates of Jinshu 2 and Tongshu 8 were as high as 52% and 22.5%, respectively, with a general reduction of 20-50% and a weight of over 80% Due to the degradation of potato, the annual loss in the region amounted to 7.42 million kg of grain.