摘要
合理施肥是发挥马铃薯生产潜力的重要措施之一,干旱区域其施肥技术尤为重要。通过试验,研究了马铃薯产量与氮、磷、钾最佳施用量之间的关系,建立了马铃薯产量(Y)与氮肥(N)、磷肥(P)、钾肥(K)之间的回归方程,得出安定区马铃薯每公顷最佳施氮量为(N)203.48kg,施磷量(P2O)5908.75kg,施钾量(K2O)217.27kg,此时马铃薯产量预报值为15941.55kg,最佳施肥量比例为1:4.47:1.07。试验结果为干旱区马铃薯测土配方施肥技术提供了理论依据。
The relationship of the potato production with nitrogen, phosphorus and potassium fertilizer was studied in this research to establish the regression equation of a nitrogen（N）, phosphorus（P） and potassium（K） fertilizer with the potato output （Y）. The result showed that the best fertilization rate in potato was N 203.48 kg·hm^-2 P2O5 908.75 kg·hm^-2, and K2O 217.27 kg·hm^-2, at which the prediction value of production would be 15 941.55 kg·hm^-2, and the best fertilizer ratio was 1：4.47： 1.07.
出处
《中国马铃薯》
2009年第5期274-276,共3页
Chinese Potato Journal
关键词
马铃薯
回归方程
最佳施肥量
potato
regression equation
application rate
