干旱区生态环境知识资源中心(Arid): 砒砂岩与沙复配成土过程中沙的调控作用1

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	砒砂岩与沙复配成土过程中沙的调控作用1
其他题名	Regulatory Role of Sand in Soil Formation from Soft Rock and Sand
	王欢元; 韩霁昌; 罗林涛; 童伟; 付佩; 张瑞庆
来源期刊	土壤通报
ISSN	0564-3945
出版年	2014
卷号	45 期号:2 页码:286-290
中文摘要	研究不同含沙量下砒砂岩与沙复配土壤的物理性质,为研究其成土机理及砒砂岩与沙复配成土技术大规模应用于毛乌素沙地土地整治、发展农业种植提供科学依据。通过监测分析不同含沙量复配土的土壤质地、毛管孔隙度、导水性、团聚体等指标,分析沙在复配土成土过程中的作用。结果表明:含沙50%(质量分数)时,黏粒含量最高(8.24%),且随含沙量的上升,毛管孔隙度呈显著的线性负相关,饱和导水率则随含沙量的增加呈指数增长。维持作物良好生长的水稳定性大团聚体含量随含沙量变化呈极显著差异(p < 0.01),而随耕作次数变化差异不显著(p < 0.05)。本研究结果说明沙土在砒砂岩与沙复配成土可改良土壤质地、增加土壤导水性、透气性等作用,利用砒砂岩与沙复配成土技术有望实现沙漠绿化造田,从而控制砒砂岩水土流失和沙土沙漠化问题。
英文摘要	Analyzing the function of sand on physical properties of combined soil in soil-forming process of soft rock and sand combination is helpful to the study of the soil-forming mechanism, which can also be used to provide scientific bases for large scale applications in Mu Us sandy land control and the development of agricultural cultivation. In laboratory, seven mixture ratios of soft rock and sand were conducted. In experimental field plot, a total of 14 plots were conducted, including different treatments of mixture ratios and crops. The physical properties of combined soil including soil texture, capillary porosity, saturated hydraulic conductivity were measured in laboratory experiment, and soil texture, soil aggregate and crop yields were measured after the harvest in each crop season. Then the regulatory role of sand on physical properties of combined soil in soil-forming process of soft rock and sand combination was studied. When sand content was 50% (mass fraction), the content of clay was highest (8.24%). As the sand content sediment concentration increased, the capillary porosity significantly decreased linearly but the saturated hydraulic conductivity increased exponentially. Water stable aggregate content which maintained crop growth changed significantly (p < 0.01), while the difference caused by tillage was not significant (p < 0.05). In the soil-forming process of soft rock and sand, sand can play the role of improving soil texture, reducing capillary porosity, increasing soil water conductivity and permeability, increasing water stable aggregates content, etc. With the technical of soft rock and sand compound soil, Mu Us sandy land will convert into forested land or farmland, and also soil and water loss and sandy desertification will be controlled.
中文关键词	砒砂岩 ; 沙 ; 复配成土 ; 调控作用 ; 毛乌素沙地
英文关键词	Soft rock Sandy soil Remixed soil Regulatory role Mu Us sandy land
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5103339
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231839
作者单位	陕西省地产开发服务总公司, 陕西省土地整治工程技术研究中心;;国土资源部退化及未利用土地整治工程重点实验室, 西安, 陕西 710075, 中国
推荐引用方式 GB/T 7714	王欢元,韩霁昌,罗林涛,等. 砒砂岩与沙复配成土过程中沙的调控作用1[J],2014,45(2):286-290.
APA	王欢元,韩霁昌,罗林涛,童伟,付佩,&张瑞庆.(2014).砒砂岩与沙复配成土过程中沙的调控作用1.土壤通报,45(2),286-290.
MLA	王欢元,et al."砒砂岩与沙复配成土过程中沙的调控作用1".土壤通报 45.2(2014):286-290.