MA Hai-long,JIN Xiao-qin,LIU Guo-bin,et al.Change in Soil Anti-erodibility of Different Farmland Types in Loess Hilly Region[J].Research of Soil and Water Conservation,2013,20(02):5-8.
黄土丘陵区不同农田类型土壤抗蚀性分异研究
- Title:
- Change in Soil Anti-erodibility of Different Farmland Types in Loess Hilly Region
- Keywords:
- loess hilly region; farmland types; soil anti-erodibility
- 分类号:
- S157
- 摘要:
- 在典型侵蚀环境纸坊沟流域内选取不同农田类型土壤为研究对象，分析了土壤主要理化指标和抗蚀性的演变特征。结果表明：黄土丘陵区不同农田类型土壤化学性质和抗蚀性差异较大，土壤化学性质以坡耕地最低，大棚菜地最高，土壤有机碳、全氮、碱解氮和速效钾含量由高到低依次为：大棚菜地 > 川地 > 梯田 > 坝地 > 沟台地 > 坡耕地；总体而言，与坡耕地相比，沟台地、川地、坝地、大棚和梯田可以明显增加土壤抗蚀能力，其中沟台地和川地要好于坝地、大棚和梯田。从土壤经营管理角度分析，其它几种农田类型较坡耕地相对更为科学，可以显著增加土壤肥力和提高土壤抗蚀性能。
- Abstract:
- Small Zhifanggou watershed in typical erosion environment was regarded as study case, and the soil samples of different farmland types were selected. Several indices were analyzed such as physical and chemical properties, and anti-erodibility. The results showed that physic-chemical properties and anti-erodibility differed significantly. The poor chemical properties were found in slope cropland and the the best properties were found in the greenhouse vegetable land. Organic carbon, total nitrogen, available N and available K behaved similarly, the greenhouse vegetable land was the highest, followed by flat field, terrace, dam land and gully land, the sloping cropland was the lowest. Compared with the sloping cropland, other farmland types had a better soil physical and chemical properties and anti-erodibility. Among these types, gully land and flat field increased more drastically than terrace, dam land and greenhouse vegetable land. The results suggested that other farmland types were managed more scientifically, and had a better soil fertile as well as anti-erodibility compared to the sloping cropland.
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备注/Memo
收稿日期:2012-06-05;改回日期:2012-11-20。
基金项目:陕西省科学技术研究发展计划项目（2011KJXX63，2011JQ5007）；西北农林科技大学2009年基本科研业务费青年项目资助计划（QN2009080）
作者简介:马海龙(1988-),男,内蒙古乌兰察布市人,硕士研究生,主要从事流域生态研究。E-mail:mahailong8166@163.com
通讯作者:刘国彬(1958-),男,陕西榆林人,博士,研究员,主要从事生态恢复和流域管理研究。E-mail:gbliu@ms.iswc.ac.cn