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立足本应获得较高效益的四川省仁寿县北斗镇紫薯产业因产量低下而效益不彰的现状,针对导致低产的主要原因(少施肥料且不施钾肥),依据紫薯“富钾”的需肥特点,在1 hm~2施硫酸钾675.00~1050.00kg间设置6个处理(等差75.00 kg/hm~2),实施3次重复的随机区组试验,对结果开展方差分析,定量得出较优施钾量为900.00 kg/hm~2(底肥:块根膨大肥=3:1)。
Based on the current situation that the purple potato industry in Beidou, Renshou County, Sichuan Province, which should be given higher benefits, is not profitable due to low output, in view of the main reasons for low yield (less fertilizers and no potassium fertilizer) 6 treatments (75.00 kg / hm ~ 2, 75.00 kg / hm ~ 2) were set between 675.00 ~ 1050.00 kg potassium sulfate at 1 hm ~ 2 and randomized block trials with 3 replicates were conducted. The results were analyzed by analysis of variance , The quantitative results showed that the optimum potassium application rate was 900.00 kg / hm ~ 2 (base fertilizer: tuberous enlargement fertilizer = 3: 1).