| 黄土丘陵沟壑区水平沟耕作效益研究 |
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| 引用本文： | 张兴昌.黄土丘陵沟壑区水平沟耕作效益研究[J].水土保持研究,1998,5(4):52-58,76. |
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| 作者姓名： | 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, 陕西杨陵, 712100 |
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| 摘 要： | 利用9a试验资料,分析和研究了坡地水平沟耕作的土壤水分动态及耗水规律,并从水土流失、养分流失及水分利用方面研究了水平沟耕作效益.得出坡地水平沟耕作的土壤水分变化为:封冻前的强烈失墒期、越冬干湿交替失墒期和返青拔节后缓慢失墒期3个阶段.小麦灌浆期及返青期对产量作用最大;水平为能够显著地拦蓄径流,减少土镶冲刷和养分流失,提高土壤水分利用率,进而提高作物单产.
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| 关 键 词： | 黄土丘陵沟壑区 水平沟 效益 |
The Benefit of Level Trench Tillage in Hilly-gully Loess Plateau |
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| Zhang Xingchang.The Benefit of Level Trench Tillage in Hilly-gully Loess Plateau[J].Research of Soil and Water Conservation,1998,5(4):52-58,76. |
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| Authors: | Zhang Xingchang |
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| Institution: | Institute of Soil and Water Conservation, Chinese Academy of Sciencesand Ministry of Water Resources Yangling Shanxi 712100 |
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| Abstract: | On the basis of 9-year experimental data,the dynamic change of soil water andconsuming water were studied in slope land.The benefit of level trench tillage as affected by soiland water loss,soil nutrient loss,soil water utilization,was also discussed detailedly.Soilwater change laws were divided into 3 stages such as strong consuming stage before soil icebounding,consuming water stage with alternation of drying and wetting in surviving winter period,and slowly consuming water after grouting and turning green.Because of retaining runoff,lessening soil wash,reducing soil nutrient loss,and raising soil water use rate,the level trenchtillage increased crop yield obviously. |
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| Keywords: | hilly-gully Loess Plateau level trench tillage benefit |
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