冬种马铃薯氮磷钾肥料效应  

Effect of Nitrogen,Phosphorus and Potassium Fertilizer Combined Application on Winter Potato

作　　者：李召平 

机构地区：[1]福建省长乐市土肥站

出　　处：《福建农业科技》2011年第4期70-71,共2页Fujian Agricultural Science and Technology

摘　　要：选用中薯3号在乌砂田上进行"3414"试验,利用DPS软件采用二次多项式逐步回归的方法,得到的最优方程回归模型Y=698.23+52.58N+66.65K-3.73N2-9.86P2-0.73K2+9.08NP;对方程进行分析,当施肥量N 16.03 kg、P2O5 7.38 kg、K2O 27.00 kg时,马铃薯每667 m2最高产量为2387 kg;施肥量为N 15.96 kg、P2O5 7.28 kg、K2O 26.62 kg时,最佳经济效益为2956.6元。A winter patato ＂Zhongshu3＂ was used to carry out ＂3414＂ fertilizer experiment at black sand land.The results were analyzed by quadratic polynomial stepwise regression method with DPS statistic software,and the best optimum equation regression model was obtained as Y=698.23＋52.58N＋66.65K-3.73N2-9.86P2-0.73K2＋9.08NP.According to the equation,the highest yield of potato was 2387 kg/667 m2（191.7kg/hm2）,while the fertilizer amounts of N,P2O5 and K2O were 16.03,57.38,27.00 kg,respectively.The best economic benefit was 2956.6 Yuan/667 m2（197.1 Yuan/hm2）,while the fertilizer amounts of N,P2O5 and K2O were 15.96,7.28,26.62 kg,respectively.

关 键 词：冬种马铃薯 “3414”试验 氮磷钾 肥料效应 

分 类 号：S532[农业科学—作物学]