不同钾肥用量对马铃薯产量、品质和效益的影响

摘要

The research of potassium fertilization was carried out in greenhouse and field to test its effect on potato yield and related physiological traits. The result showed that the increasing of potassium fertilizer on the base of common applying fertilizer in Gansu Haplic Kastanzens can improve yield of potato, content of starch and commodity rate of tuber; Moreover, it can also increase farmer's income. So we suggest supplementing potassium fertilizer per 60 kg/hm2 on the base of nitrogenous and phosphorus fertilizer at local area.%通过盆栽和大田试验,研究不同钾肥用量对马铃薯产量、品质和效益的影响.结果表明,甘肃高寒阴湿区黑麻土上,在当地习惯施肥基础上增施钾肥,可显著提高马铃薯块茎产量、淀粉含量和商品薯率,同时,增施适量的钾肥可以显著增加农民收入.建议该区在氮、磷肥配合施用的基础上施K2O 60 kg/hm2.