| 黄绵土坡耕地大豆的水肥产量效应 |
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| 引用本文： | 陈洪松,邵明安,张兴昌. 黄绵土坡耕地大豆的水肥产量效应[J]. 应用生态学报, 2003, 14(2): 211-214 |
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| 作者姓名： | 陈洪松 邵明安 张兴昌 |
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| 作者单位： | 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,杨凌712100 |
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| 基金项目： | 中国科学院知识创新工程 (KZCX2 411)，国家杰出青年科学基金资助项目 (40 0 2 5 10 6) |
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| 摘 要： | 研究了不同施肥量(N、P配施)下黄绵土坡耕地大豆的水肥产量效应．结果表明，水分利用效率(WUE)与作物产量(Y)正相关，y＝0．0017l 0.0035WUE．单施磷时，作物产量和WUE随磷的增加而增大；单施氮时，作物产量和WUE随氯的增加先增大后降低，表明施用氮应该配合施用一定量的磷．施肥能显著提高作物产量和WUE，与不施肥相比，施肥时作物产量和WUE分别提高了86．76％一470．16％和69．64％一438．47．与单施氦、磷相比，氮、磷合理配施能提高作物产量和水分利用效率，适宜的N、P(P205)配施比例为1．3：1．
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| 关 键 词： | 气候变化 玉米产量 积分回归 |
| 文章编号： | 1001-9332(2003)02-0211-04 |
| 修稿时间： | 2001-02-16 |
Effect of soil water and fertilizer on soybean yield on loess slopeland |
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| CHEN Hongsong ,,SHAO Ming'an ,ZHANG Xingchang. Effect of soil water and fertilizer on soybean yield on loess slopeland[J]. The journal of applied ecology, 2003, 14(2): 211-214 |
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| Authors: | CHEN Hongsong SHAO Ming'an ZHANG Xingchang |
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| Affiliation: | Laboratory of Soil Erosion & Dryland Farming, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Northwest Science and Technology University of Agriculture and Forestry, Yangling, 712100, China. |
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| Abstract: | Studies on the effect of soil water and fertilizer on soybean yield on loess slope farmland showed that soybean yield (Y) increased linearly with the increase of water use efficiency (WUE). Soybean yield and WUE increase with the increase of P fertilizer when P fertilizer was applied alone, but increased firstly and then decreased with the increase of N fertilizer when N fertilizer was applied alone. Therefore, N fertilizer should be applied with P fertilizer. Compared to no fertilizer, fertilizer could significantly increase soybean yield and WUE by 86.76%-470.16% and 69.64%-438.47%, respectively. A combined application of N and P fertilizers could increase more soybean yield and WUE than applied each of them alone, and the rational ratio of N and P (P2O5) was 1.3:1. |
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| Keywords: | Slopeland Effect of soil water and fertilizer Water use efficiency Loess soil. |
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