| 甘肃省典型土壤持水特性及影响因素研究 |
| |
| 引用本文： | 刘小宁,隆瑞红,罗珠珠,蔡立群,董博.甘肃省典型土壤持水特性及影响因素研究[J].干旱地区农业研究,2017,35(1):143-151. |
| |
| 作者姓名： | 刘小宁 隆瑞红 罗珠珠 蔡立群 董博 |
| |
| 作者单位： | 1. 甘肃农业大学资源与环境学院，甘肃 兰州730070; 甘肃省干旱生境作物学重点实验室，甘肃 兰州730070;2. 甘肃农业大学资源与环境学院，甘肃 兰州730070; 宕昌县财政局，甘肃 陇南748500;3. 甘肃农业大学资源与环境学院，甘肃 兰州730070; 甘肃省干旱生境作物学重点实验室，甘肃 兰州730070; 甘肃省节水农业工程技术研究中心，甘肃 兰州730070;4. 甘肃农业大学资源与环境学院,甘肃 兰州,730070 |
| |
| 基金项目： | 甘肃省自然科学基金项目 |
| |
| 摘 要： | 研究了甘肃省14个类型区12种典型土壤的物理性质,并测得不同水势下的土壤重量含水量,利用Gardner经验方程拟合出其土壤水分特征曲线,对不同土壤的持水性及其影响因素作了研究。结果表明:甘肃省典型土壤持水能力差异明显,整体而言,甘南高原类型区土壤持水和供水能力较好,区内典型土壤拟合参数A值均在20以上,且较为稳定;陇南山地丘陵类型区土壤供水能力最佳,持水能力较好,区内典型土壤拟合参数A值均在24以上,但稳定性较弱;黄土高原类型区内土壤持水性适中,供水能力较弱,稳定性最佳;河西干旱半干旱类型区的土壤持水、供水能力及稳定性均较差,区内典型土壤除潮土外拟合参数A值均在17以下;土壤质地(0.002 mm粘粒含量)、总孔隙度对甘肃省土壤的持水性影响最为显著,其次为土壤毛管孔隙度、密度和容重。
|
| 关 键 词： | 甘肃省典型土壤 土壤水分特征曲线 比水容量 土壤物理性质 影响因素 |
Research on water-holding capacity and related factors in typical soils of Gansu province |
| |
| LIU Xiao-ning,LONG Rui-hong,LUO Zhu-zhu,CAI Li-qun,Dong Bo.Research on water-holding capacity and related factors in typical soils of Gansu province[J].Agricultural Research in the Arid Areas,2017,35(1):143-151. |
| |
| Authors: | LIU Xiao-ning LONG Rui-hong LUO Zhu-zhu CAI Li-qun Dong Bo |
| |
| Institution: | College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Tanchang County Finance Bureau, Longnan, Gansu 7485003, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China,College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China; Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China; Gansu Engineering Research Center for Agriculture Water-saving, Lanzhou, Gansu 730070, China and Gansu Engineering Research Center for Agriculture Water-saving, Lanzhou, Gansu 730070, China |
| |
| Abstract: | The soil water-holding capacity is evidence to measure the absorption and holding abilities of soil .This research studied twelve soil physical properties in four soil areas from Gansu,and measured the gravity moisture content in different soil suctions,utilized the Gardner experience equation to plot a soil water characteristic curve,and investigat-ed the typical soil water-holding capacity and the influencing factors .The results show that there are significant varia-tionsfortypical soil water-holding capacities in Gansu .In general,the soil water-holding capacity and water supply lability in the Gannan plateau are superior and stable,and the parameter A of typical soil in this region all exceeded 20 .The best soil water supply ability belongs to the mountainous and hilly regionin Longnan,with parameter A value of typical soil reaching 24 .Its water-holding capacity is good,but the stability is weak .The soil in the Loess Plateau has moderate water-holding ability and feeble water supply,as well as the best stability,compared with the other research areas .Both soil water-holding capacity,water supply capacity and the stability in the Hexiarid and semi-arid regionsare poor,the pa-rameter A of this typical soil was all lower than 17,except for the fluvo-aquic soil .In addition,soil texture(<0 .002 mm clay content)and total porosity affect the soil water-hold capacity obviously,followed by capillary porosity,density and volume weight . |
| |
| Keywords: | typical soil of Gansu province soil water characteristic curve specific water capacity soil physical properties influencing factors |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《干旱地区农业研究》浏览原始摘要信息 |
| 点击此处可从《干旱地区农业研究》下载免费的PDF全文 |
|
