| 渭北旱塬农田旱情分析与抗旱增产途径研究 |
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| 引用本文： | 马延庆,刘长民.渭北旱塬农田旱情分析与抗旱增产途径研究[J].西北农业学报,1997,6(4):69-72. |
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| 作者姓名： | 马延庆 刘长民 |
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| 作者单位： | 陕西省咸阳市气象局 咸阳712000;陕西省咸阳市农业气象研究所 咸阳712034 |
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| 摘 要： | 运用帕默尔干旱指数原理,结合陕西渭北地区的农业气候现状,分析了农田和作物干旱形成的条件及其发展规律,建立了适合该地区特点的旱情指标模式:xi=Zi/47.28+0.166xi-1,据此提出了该地区农田旱度指数模式:Kz=(p-ET+So-Ro)/176.另外,还探讨了农田抗旱增产的途径和对策,给出了节水灌溉通用计算公式:S=176-(P-ET+So).
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| 关 键 词： | 帕黑尔干旱指数 旱度模式 抗旱途径 |
| 收稿时间： | 1996/8/22 0:00:00 |
| 修稿时间： | 1996/11/21 0:00:00 |
Analysis of Field Drought lndex and Ways of Drought Contro1 and Yield Increase in Plateau Weibei Shaanxi |
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| Weibei Shanxi and Ma Yanqing.Analysis of Field Drought lndex and Ways of Drought Contro1 and Yield Increase in Plateau Weibei Shaanxi[J].Acta Agriculturae Boreali-occidentalis Sinica,1997,6(4):69-72. |
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| Authors: | Weibei Shanxi and Ma Yanqing |
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| Institution: | Xianyang City Meteorologicoal Bureau, Xianyang 712000;Xianyang Institute of Agrometeorology, Xianyang 712034 |
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| Abstract: | By analysing the formation,development and the end of drought in Weibei plateau farmland based on Palmer''s drought index.A drought model:xi=Zi/47.28+0.7166*xi-1, well applied at that district was derived.A drought index model for farmland Kz=(p-ET+So-Ro)/176 was also derived.Drought control and yield increase methods were discussed. |
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