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农林四号甘藷在定县专区由一九四九年开始从石家庄调来一批春作苗子,分散在各县示范种植了二年,以各地的产量证明,确为其它品种所不能比拟的。一般增产50——100%以上,品质亦好,颇受农民欢迎。惟对其贮藏方法上缺乏经验,在留种藷贮藏期间都有腐烂的事情发生,因此影响了繁殖。但在行唐县由
Nonglin IV sweet potato in Dingxian Prefecture started from 1949 to Shijiazhuang transferred a group of spring seedlings scattered in all counties for planting for two years to prove the yield around, indeed, unmatched by other varieties. The general increase of 50--100%, quality is also good, popular with farmers. However, their lack of experience in storage means that they have decayed during the storage of the remaining potatoes, thus affecting breeding. But in the line from Tang County