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Comparison of Micromorphological Features of Two Agricultural Cultivated Soils in Guanzhong Areas, Shaanxi Province, China

ISSN号：1003-7578
期刊名称：《干旱区资源与环境》
时间：0
分类：S275[农业科学—农业水土工程;农业科学—农业工程]
作者机构：[1]College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi＇an 710062, P.R.China, [2]State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences （CAS）, Xi＇an 710075. P.R.China
相关基金：Acknowledgements This research was financially supported by the National Natural Science Foundation of China （40471119, 40571154）, Project of State Key Laboratory of Loess and Quaternary Geology of China （SKLLQG0604）, and Natural Science Foundation of Shaanxi Province （2006D01）. In carrying out this research, Zhou Zhixiang, Wang Lijun, and Zhang Jian enthusiastically offered their help and support both in the field and laboratory. I would like to express my sincere thanks to them.

作者： PANG Jiang-li[1,2], QIU Hai-yan[1], HUANG Chun-chang[1], CHA Xiao-cun[1], ZHANG Xu[1]

关键词：中国, 贵州, 土地, 灌溉技术, 微观特征, micromorphology, irrigation, Guanzhong areas

中文摘要：

由比较微形态特征灌溉并且在 Guanzhong 区域的非灌溉的土壤，中国，这篇论文试着在形成土壤的过程上说明耕作管理方法的影响。微形态学在一台 petrographic 显微镜下面被观察，它的图象被 Nikon NISBR 2.2 软件 quantificationally 测量。灌溉并且非灌溉的土壤有一样的土剖面模式， Ap1-Ap2- BC，而是前者有更明显的侧面异化。土剖面 A 和 B 的矿物质集合是很类似的，它 Q 和 Pl 主要是镇静的。与非灌溉的土壤相比，灌溉土壤的谷物显著地在长度，区域， eqdiameter，周界，延伸，圆，和 C/F10 μ m 比率减少；虚空被更多的常规空形状和更光滑的空墙描绘；有更多的丰富的剩余泥土和 illuvial 泥土的小数量。在这研究的所有结果建议耕作管理方法在土剖面异化和微形态学上有影响。农业灌溉能加强捱过的度，成为更小并且更周围玷污谷物，引起剩余泥土和 illuvial 泥土的外观的重要增加。但是没有重要变化在饲料用谷类的矿物质集合被观察了。

英文摘要：

By comparing micromorphological features of irrigated and non-irrigated soils in Guanzhong areas, China, this paper tries to illustrate the influences of farming management methods on the soil-forming process. The micromorphology was observed under a petrographic microscope and its image was quantificationally measured by Nikon NISBR 2.2 software. Both irrigated and non-irrigated soils have the same soil profile pattern, Ap1- AP2- BC, but the former has a more obvious profile dissimilation. The minerals assemblage of soil profiles A and B are very similar, which is mainly composed of Q and P1. Compared with non-irrigated soil, grains of irrigated soil remarkably decrease in length, area, eqdiameter, perimeter, elongation, roundness, and C/F10μm ratio; voids are characterized by more regular void shape and more smooth void wall; there is more abundant residual clay and small amount of illuvial clay. All results in this study suggest that the farming management method has influences on soil profile dissimilation and micromorphology. Agricultural irrigation could strengthen the degree of weathering, make smaller and rounder soil grains, cause a significant increase of residual clay and appearance of illuvial clay. But no significant change has been observed in the minerals assemblage of coarse grains.

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