由国栋,虎胆·吐马尔白,邵丽盼·卡尔江,吴永涛,李卓然.膜下滴灌棉田冻融期土壤水分盐分变化特征[J].干旱地区农业研究,2017,35(4):124~128
膜下滴灌棉田冻融期土壤水分盐分变化特征
Soil moisture and salinity changes in cotton field of drip irrigation during freeze-thaw period
  
DOI：10.7606/j.issn.1000-7601.2017.04.19
中文关键词:  滴灌棉田  冻融期  水分  盐分  变化特征
英文关键词:drip irrigation  freezing and thawing period  moisture  salinity  variation
基金项目:国家自然科学基金(51469033)
作者单位
由国栋 新疆农业大学水利与土木工程学院， 新疆 乌鲁木齐 830052； 山东省滨州市小开河引黄灌溉管理局， 山东 滨州 256600 
虎胆·吐马尔白 新疆农业大学水利与土木工程学院， 新疆 乌鲁木齐 830052 
邵丽盼·卡尔江 新疆农业大学水利与土木工程学院， 新疆 乌鲁木齐 830052；新疆水利厅农牧区水利规划总站, 新疆 乌鲁木齐 830000 
吴永涛 新疆农业大学水利与土木工程学院， 新疆 乌鲁木齐 830052 
李卓然 新疆农业大学水利与土木工程学院， 新疆 乌鲁木齐 830052 
摘要点击次数: 2672
全文下载次数: 1119
中文摘要:
      通过分析2014年11月—2015年3月北疆地区膜下滴灌棉田冻融期土壤盐分、水分与温度变化，探讨了不同土层水热盐在冻融期的变化和耦合关系。结果表明：冻融期土壤表层和深层含水量较高，中间层含水量较低；土壤剖面盐分在0～80 cm呈现层状分布，浅层土壤发生盐分明显累积，土壤盐分变异系数20 cm土层为0.525、40 cm土层为0.257、80 cm土层为1.041。在冻融期，土壤水分盐分沿剖面分布发生明显变化；土水势梯度、土壤温度梯度是冻融期土壤水分盐分迁移的主要因素，土壤水热盐之间变化具有高度的耦合性。
英文摘要:
      The changes of soil salinity, moisture and temperature of film drip irrigation cotton field in north area from November 2014 to March 2015 were analyzed. Changes of soil water, heat and salt and their coupling relationship during freezing and thawing period were measured. The results revealed that during freezing and thawing period, the water content in the surface and deep soil was higher while middle layer had low water content. Degree of salinity increased with the soil depth, and was significantly enriched in surface soil. During freezing and thawing period, the distribution of water and salinity of soil profile was significantly changed. Soil water potential gradient and soil temperature gradient were the principal factors influencing soil water and salt migration, and soil water, heat and salt changed coordinately.
查看全文  查看/发表评论  下载PDF阅读器