滨海盐碱农田排水沟土壤水盐分布特征研究  

Research on the Characteristics of Water and Salt Distribution in a Coastal Saline Field Drainage Ditch

作　　者：孙池涛[1,2] 张俊鹏 冯棣 孙景生[1] SUN Chi.-tao;ZHANG Jun-peng;FENG Di;SUN Jing-sheng(Farmland Irrigation Research Institute / Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture,Xinxiang 453000,Henan Province,China;College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Shandong Taian 271018,Shandong Province,China;Institute of Geographic Science and Natural Resources,Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]中国农业科学院农田灌溉研究所/农业部作物需水过程与调控重点实验室,河南新乡453002 [2]山东农业大学水利土木工程学院,山东泰安271018 [3]中国科学院地理科学与资源研究所,北京100101

出　　处：《中国农村水利水电》2018年第8期19-21,共3页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51609248;51179193);现代农业棉花产业技术体系建设专项(CARS-15-13)

摘　　要：明确盐碱地排水沟内土壤水盐分布特征,对盐碱地生态环境建设及其开发、利用具有重要参考价值。以河北省国营海兴农场轻度和重度盐碱地周边布设的排水沟为研究对象,对排水沟顶部、半坡和底部进行土壤水分和盐分分层取样和调查,分析了0~200 cm土层排水沟土壤剖面土壤水盐分布特征。结果表明,轻度和重度盐碱地排水沟土壤剖面含水率分布特征基本一致,均是自地表向土壤深层逐渐增加,重度盐碱地土壤含水率略高于轻度盐碱地;轻度盐碱地排水沟盐分在土壤剖面内呈均匀分布,盐分空间分布变异系数为7.70%,属于弱变异性;重度盐碱地排水沟盐分主要积聚在地表以下40 cm土层内,变异系数为44.63%,属于中等变异。It is clear that understanding the distribution of soil water and salinity in saline-alkali drainage ditch after the rainy season has an important reference value for the development and utilization of saline-alkali land,two drainage ditches from mild and severe saline-alkali cotton fields of State-owned Haixing Farm in Hebei Province is studied. Soil water and salt in 0 ~ 200 cm is measured and analyzed at the top,half slope and bottom of the drainage ditch. The results show that the distribution of soil water content of drainage ditch in mild and severe saline-alkali soil is nearly the same,both of them increase gradually from the surface to the deep soil layer,and the soil water content of severe saline-alkali soil is slightly higher than that of mild saline-alkali soil. Salt content of the mild saline-alkaline drainage ditch is uniformly distributed in the soil profile,and the coefficient of variation of salt spatial distribution is 7.70%,which belongs to weak variation. The salt content of the severe saline-alkali land mainly accumulates in the top 40 cm layer below the surface,with a coefficient of variation of44.63%,which belongs to the medium variation.

关 键 词：盐碱地 土壤剖面 空间分布 变异系数 滨海 

分 类 号：TV93[水利工程—水利水电工程] S275.6[农业科学—农业水土工程]