| 宁南山区不同降水年型各立地农田生态系统施肥模式研究 |
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| 引用本文： | 周涛,胡华,惠开基.宁南山区不同降水年型各立地农田生态系统施肥模式研究[J].干旱区资源与环境,2000,14(2):71-76. |
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| 作者姓名： | 周涛 胡华 惠开基 |
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| 作者单位： | 1. 宁夏农林科学院土壤肥料研究所
2. 宁夏大学数学系,银川,750002 |
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| 摘 要： | 本文采用回归饱和最优设计 ,对宁南三区 3种不同立地农田生态系统影响春小麦产量地氮肥和磷肥的用量进行了长期定位研究。建立了春小麦施肥效益函数模型 ,通过对函数模型分析 ,确定了最大产量效应和最佳经济效应的施肥组合方案 ,明确了模型因素效应顺序和高产施肥的关系
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| 关 键 词： | 氮 磷 降水年型 |
| 文章编号： | 1003-7578(2000)02-071-06 |
| 修稿时间： | 1999年8月20日 |
Study on fertilization model of varied farmland ecological system different precipitation years in southern mountain areas of Ningxia |
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| ZhOU Tao,HU Hua,HUI Kai-ji.Study on fertilization model of varied farmland ecological system different precipitation years in southern mountain areas of Ningxia[J].Journal of Arid Land Resources and Environment,2000,14(2):71-76. |
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| Authors: | ZhOU Tao HU Hua HUI Kai-ji |
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| Institution: | ZhOU Tao 1 HU Hua 2 HUI Kai 1ji 1 |
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| Abstract: | Applying optimum design and regression saturation long-site-experiment study analysed the on rate of nitrogen and phosphorus affecting spring-wheat production in three kinds of different farmland ecological system.The benefit equation of fertilization of spring-wheat is put up, By equation analyses, the plan of fertilization of the biggest production and the optimum economic effect are defined, the sequence of fertilizer and the relation of high-production and fertilization are defined, too. |
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| Keywords: | Nitrogen phosphorus precipitation years |
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