乌兰布和沙区农田土壤水分及渗漏量动态特征

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英文篇名：Dynamic characteristics of soil water and leakage in irrigated farmland in Ulan Buh desert 作者：李艳丽 ; 梁海荣 ; 杨文斌 ; 赵英铭 ; 李卓凡 ; 李佳陶 ; 辛智鸣 英文作者：LI Yanli;LIANG Hairong;YANG Wenbin;ZHAO Yingming;LI Zhuofan;LI Jiatao;XIN Zhim-ing;Institute of Desertification Studies,China Academy of Forestry;Inner Mongolia Academy of Forestry Science;Experimental Centre of Desert Forest,CAF; 关键词：乌兰布和沙漠 ; 土壤体积含水量 ; 渗漏 英文关键词：Ulan buh desert;;soil volume water content;;leakage 中文刊名：干旱区资源与环境 英文刊名：Journal of Arid Land Resources and Environment 机构：中国林业科学研究院荒漠化研究所;内蒙古林业科学研究院;中国林业科学研究院沙漠林业实验中心; 出版日期：2018-12-26 出版单位：干旱区资源与环境 年：2019 期：03 基金：国家自然基金项目(41661006)资助 语种：中文; 页：126-131 页数：6 CN：15-1112/N ISSN：1003-7578 分类号：S152.7

摘要

水分是沙区农田的主要限制因子,研究灌溉对沙区农田土壤水分的影响,对该区域农业水资源利用以及农业生产具有指导意义。为揭示乌兰布和沙漠不同土壤类型农田土壤水分规律及深层渗漏损失,分析播种-拔节期土壤体积含水量变化特征与深层渗漏规律。研究结果:1)观测期内不同土壤类型农田土壤含水量大小顺序依次为:砂土农田<壤土农田<粘土农田。4月17日灌溉211. 5mm对不同土壤类型0～150cm层土壤含水量均产生显著影响(p <0. 01),影响大小依次为:砂土农田、壤土农田、粘土农田。2)不同土壤类型农田在监测期内150cm土层均持续有深层渗漏,且211. 5mm灌溉量使砂土农田与壤土农田深层渗漏量增大,粘土农田无明显变化。观测期内砂土农田共产生深层渗漏138. 2mm,壤土农田共产生深层渗漏74. 6mm,粘土农田共产生深层渗漏3mm。
        Water is the main limiting factor for desert farmland. The study of the influence of irrigation on soil water in farmland has guiding significance for the utilization of agricultural water resources and agricultural production in this area. In order to reveal the soil moisture regularity and deep soil recharge( DSR) in the farmlands with different soil types in Ulan Buh Desert,the change characteristics of soil volume content and the law of DSR were analyzed in the sowing-jointing period. The result is:(1) In the observation period,the order of soil water content in different soil types was: sandy farmland < loam farmland < clay farmland. Soil water content in 0 ～150 cm layers for different soil types were significantly affected by irrigation of 211. 5 mm( P < 0. 01),in April17 th,and the influence order was: sandy soil farmland,loam farmland and lay farmland.(2) The 150 cm soil layer of different soil types continued to have DSR,and the amount of 211. 5 mm irrigation made the DSR increase in the sandy farmland and loam farmland,and no obvious changing in the clay farmland,in the monitoring period. There was DSR of 138. 2 mm in the sandy farmlands,and 74. 6 mm in loam farmland,and 3 mm in clay farmland,during the observation period.

引文

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