| 黑土坡耕地秸秆覆盖对表层土壤结构和导气性的影响 |
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| 引用本文： | 陈帅,陈强,孙涛,张光辉,张兴义.黑土坡耕地秸秆覆盖对表层土壤结构和导气性的影响[J].水土保持通报,2016,36(1):17-21. |
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| 作者姓名： | 陈帅 陈强 孙涛 张光辉 张兴义 |
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| 作者单位： | 1. 中国科学院东北地理与农业生态研究所黑土区农业生态重点研究室,哈尔滨黑龙江150081;中国科学院大学,北京100049;2. 中国科学院东北地理与农业生态研究所黑土区农业生态重点研究室,哈尔滨黑龙江,150081;3. 黑龙江省农垦水务局 哈尔滨黑龙江150090 |
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| 基金项目： | 国家自然科学基金面上项目"黑土坡长因子"(Y2GJ091001);国家支撑计划课题"三江平原规模化农业循环技术集成与示范"(2012BAD14B06) |
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| 摘 要： | 目的]调查研究秸秆覆盖对黑土坡耕地表层土壤结构和导气性的影响,揭示秸秆覆盖措施对农田黑土土壤物理性状和功能的影响。方法]利用黑土农田保护性耕作连续7a的坡耕地长期定位田间试验,系统观测秸秆覆盖免耕处理和传统耕作处理的表层0—10cm的土壤容重、孔隙度、饱和含水量、田间持水量和土壤导气率等指标,并加以分析。结果](1)与秸秆移除传统耕作相比,秸秆覆盖免耕处理能够显著增加表层土壤容重、饱和含水量以及田间持水量,减少总孔隙度和非毛管孔隙度;(2)秸秆覆盖免耕处理使土壤水稳性团聚体显著增加,水稳性大团聚体(0.25mm)的含量、平均重量直径(MWD)和几何平均直径(GWD)分别提高了10.41%,45.28%和22.58%,且土壤表层导气性降低了30%。结论]连续7a的秸秆覆盖免耕改善了表层土壤团粒结构,增加了保水能力,但导气性较差。
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| 关 键 词： | 秸秆覆盖 土壤结构 导气性 坡耕地 |
| 收稿时间： | 2014/11/25 0:00:00 |
| 修稿时间： | 2014/12/20 0:00:00 |
Effects of Straw Mulching on Topsoil Structure and Air Permeability in Black Soil Sloping Farmland |
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| CHEN Shuai,CHEN Qiang,SUN Tao,ZHANG Guanghui and ZHANG Xingyi.Effects of Straw Mulching on Topsoil Structure and Air Permeability in Black Soil Sloping Farmland[J].Bulletin of Soil and Water Conservation,2016,36(1):17-21. |
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| Authors: | CHEN Shuai CHEN Qiang SUN Tao ZHANG Guanghui and ZHANG Xingyi |
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| Institution: | Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China;University of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China;University of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China;Water Utilities Bureau of State Farms of Heilongjiang Province, Harbin, Heilongjiang 150090, China;Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China |
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| Abstract: | |
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| Keywords: | straw mulching soil structure soil air permeability sloping farmland |
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