| 宁南山区各农田生态系统氮、磷、降水配合效应及施肥模式研究 |
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| 引用本文： | 胡华,周涛.宁南山区各农田生态系统氮、磷、降水配合效应及施肥模式研究[J].干旱地区农业研究,2001,19(2):30-35. |
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| 作者姓名： | 胡华 周涛 |
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| 作者单位： | 1. 宁夏大学数学与电算工程系,
2. 宁夏农林科学院土壤肥料研究所, |
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| 基金项目： | 联合国开发计划署“援助西北旱作地区持续农业体系研究、示范与推广项目(CPR/91/114)”部分内容 |
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| 摘 要： | 在宁南山区旱农试区，通过大田试验进行施肥和降水对春小麦产量的影响和春小麦施肥模式研究。结果表明，氮肥对春小麦的影响最大，磷肥次之，降水最小。并提出了不同降水年型的合理施肥范围，分析了最大和最佳产量的施肥组合及其经济效益。
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| 关 键 词： | 农田生态系统 氮 磷 降水年型 春小麦 增产效应 转化阈值 宁夏南部 施肥模式 |
| 文章编号： | 1000-7601(2001)02-0030-06 |
| 修稿时间： | 2000年7月11日 |
Analysis on coordinating effect of nitrogen and phosphorus and precipitation in varied farmland ecological system in mountain areas in South Ningxia |
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| HU Hua,ZHOU Tao.Analysis on coordinating effect of nitrogen and phosphorus and precipitation in varied farmland ecological system in mountain areas in South Ningxia[J].Agricultural Research in the Arid Areas,2001,19(2):30-35. |
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| Authors: | HU Hua ZHOU Tao |
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| Abstract: | In the dryland experimental areas in mountain areas of South Ningxia, the fertilization model for spring wheat and effect on fertilization and precipitation to its production were studied by field experiment. The result showed that nitrogen affected production very much, phosphorus less, and precipitation the least. The rational fertilization areas in different precipitation years were put forward, and analysis on the fertilization plan for the maximum yield and optimum economic effect was made. |
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