氮磷钾配比对花椒产量的影响及其肥料效应模型分析  

Nitrogen phosphorus and potassium combination influence and its model analysis of the Znathoxylum bungeananum

作　　者：张国桢[1] 李世清[1] 

机构地区：[1]西北农林科技大学资源环境学院

出　　处：《干旱地区农业研究》2005年第6期119-123,共5页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金(30230230);2002年度教育部全国优秀青年教师资助项目(20022096);国家杰出青年基金(40025106);黄土高原土壤侵蚀与旱地农业国家重点实验室基金项目(10501-104)

摘　　要：在陕西凤县黄牛铺镇田间,采用混料设计中的单形重心设计,研究氮、磷、钾配比对花椒产量的影响,并以氮、磷、钾配比值为变量因子,花椒净椒和椒籽产量为目标函数建立了三元三次数学模型。对模型的降维分析表明,混配肥料的肥效顺序为:高钾低磷低氮<高磷低氮低钾<高氮低磷低钾<氮磷钾均衡。根据模型求出了不同氮、磷、钾配比值下的产量极大值,绘制出了养分关于产量的拓展线。Its first step was studied with the simplex centroid design the effects in the combination of nitrogen phosphorus and potassium fertilizer on yield of the Znathoxylum Bungeananum. According to the data obtained, a mathematical model was established, in which N, P, K were variables, the skin and seed of the Z. Bungeananurn were dependent variables. The data reduction analysis showed that the effect of fertilizer combination is that high K and low P and low N〈high P and low N and low K〈high N and low P and low K〈balanced N, P and K. It is calculated maxima of yield as the combination of nitrogen and phosphorus and potassium fertilizer at different degree and draws out the expand line of nutrient influence yield.

关 键 词：花椒 肥料配比 效应模型 

分 类 号：S147.2[农业科学—肥料学]