| 太行山区旱地谷子推荐施肥量的确定及其水分利用效率研究 |
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| 引用本文： | 王殿武,周大迈,臧士国,张建平,安士魁,班惠敏.太行山区旱地谷子推荐施肥量的确定及其水分利用效率研究[J].河北农业大学学报,1997(4). |
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| 作者姓名： | 王殿武 周大迈 臧士国 张建平 安士魁 班惠敏 |
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| 作者单位： | 河北农业大学!保定，071001，河北农业大学!保定，071001，河北农业大学!保定，071001，河北农业大学!保定，071001，保定市科委!保定，071051，河北省新乐市!新乐，050070 |
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| 摘 要： | 采用D最优饱和设计方法并回归建模对太行山区旱地谷子推荐施肥量及提高降水利用效率进行了研究。结果表明：最佳经济效益下的推荐施肥量N＝207．0kg／hm~2，P_2O_5＝292.4kg／hm~2。目前产量水平下，氮磷配施（N：P_2O_5＝1：1．41）不施钾肥具有明显的增产高效效果。依据最佳经济效益推荐地肥量，较未施肥谷子产量提高72．5％，降水利用效率提高3．78kg／hm~2·mm。
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| 关 键 词： | 太行山区 旱地谷子 推荐施肥量 降水利用效率 |
A Research of Determining the Recommended Amount of Fertilizer Application and Precipitation Use Efficiency in Cereal on Dryland in Taihang Mountain Area |
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| Wang Dianwu, Zhou Damai, Zang Shiguo, Zhang Jianping.A Research of Determining the Recommended Amount of Fertilizer Application and Precipitation Use Efficiency in Cereal on Dryland in Taihang Mountain Area[J].Journal of Agricultural University of Hebei,1997(4). |
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| Authors: | Wang Dianwu Zhou Damai Zang Shiguo Zhang Jianping |
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| Abstract: | This paper studied the recommended amount of fertilizer application and raising precipitation use efficiency with the method of optimum saturated design and making regres-sion model in cereal on dryland in Taihang Mountain area. The result showed that the eco-nomic optimum fertilizer rates were 207. 0kg/ha N and 292. 4kg/ha P_2O_5. Under the present yield level, to apply only the complex fertilizer of Nitrogen and Phosphorus (N: P_2O_5=1:1. 41 )without Potassium had the obvious increase of production and economic benefit. Ac-cording to the economic optimum fertiliter rates, the production raised 72. 5 per cent and the precipitation use efficiency increased 3. 78kg/hm~2. mm than those of non-applied fertilizer. |
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| Keywords: | Taihang mountain area Dryland cereal Recommended amount of fertilizer application Precipitation use efficiency |
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