摘要
氮、磷、钾互作效应与作物优化模型的研究表明:氮磷钾单因子作用对马铃薯产量贡献率大小为:施氮(正效应)>施磷(负效应)>施钾(正效应);因子交互项对产量影响大小顺序为:P×K(正效应)>N×K(负效应)>N×P(正效应);宁夏银北引黄灌区灌淤土壤马铃薯实现最高产量(Y)=2586.151 kg/667时的施肥量:纯N:29.708kg/6672,P2O5:7.515kg/6672,K2O:3.204kg/6672。
The interactions of nitrogen,phosphorus and potassium and crop optimization model research shows that the azophoska single-factor on the size of the potato yield as:contribution rate of nitrogen(positive effects) phosphorus application(floatingness) the positive effect of potassium;factors on the yielding order of size:P×K(positive effects) floatingness N×K(n × p(the positive effect).Soil potato for maximum yield in Ninxia Yinbei Yinghuang Guanyu is(y) = 2586.151 kg/667m2;fertilization:N:29.708kg/667m2;P2O5:7.515kg/667m2;K2O:3.204kg/667m2.
出处
《榆林学院学报》
2011年第4期1-4,共4页
Journal of Yulin University