摘要
通过氮钾肥配合施用的试验观察对马铃薯产量的影响,结果表明:施用450 kg/hm2 纯氮肥、225～300 kg/hm2纯钾肥,马铃薯的增产效果最好,其中 450 kg/hm2纯氮肥、225 kg/hm2纯钾肥的施肥组合为增产最佳组合.进一步试验表明,在较高氮肥水平下,增施钾肥可有效增加马铃薯产量.
Through observing the effects of nitrogenous and potash combinifion fertilizer on yield of potato. It was discovered that using 450 kg/hm^2 nitrogenous fertilizer and 225 - 300 kg/hm^2 potash fertilizer had obvious effects to increasing yield of potato, in which the optimal combintion was 450 kg/hm^2 nitrogenous fertilizer and 225 kg/hm^2 potash fertilizer. Furthemore, the yield of potato increased effectively by increasing usage of potash fertilizer under the higher level of nitrogenous fertilizer.
出处
《青海大学学报（自然科学版）》
2005年第4期44-46,共3页
Journal of Qinghai University(Natural Science)
关键词
马铃薯
氮肥
钾肥
产量
potato
nitrogenous fertilizer
potash fertilizer
yield
