甘薯优化施肥方案及函数模型建立  

Recommendation of Optimal Fertilizer Application to Sweet Potato and Establishment of its Function Model

作　　者：宋江春 常国林 李金榜 刘献宇[3] 李金良 杨廷勤 马瑜 

机构地区：[1]河南省南阳市农业科学研究所,河南南阳473083 [2]南阳市环保监测站 [3]新野县农技中心

出　　处：《安徽农业科学》2002年第2期272-274,共3页Journal of Anhui Agricultural Sciences

摘　　要：采用三因素二次正交旋转组合设计对氮、磷、钾肥的用量进行了定量研究。建立了甘薯产量函数模型 ,明确了模型因素效应顺序 (氮 >磷 >钾 )及最佳经济效益产量综合农艺措施 ,N为 72 .73 5kg/hm2 ,,P2 O5为 96.915kg/hm2 ,K2 O为 12 7.995kg/hm2 。Quantitative study on the quantity of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer was conducted through three-element quadric orthogonal whirling combination design. Function model for output of sweet potato was set up as well. Meanwhile, sequences of model elements(N>P>K) and comprehensive agricultural measures (N=72.735 kg/hm 2, P 2O 5=96.915 kg/hm 2 and K 2O=127.995 kg/hm 2 ) for the output of optimal economic benefit were expected.

关 键 词：施肥方案 甘薯 产量函数模型 

分 类 号：S531.062[农业科学—作物学]