不同灌水方式对盐化土壤水盐分布的影响  

Effects of Different Irrigation Way on Water and Salinity Distribution of Saline Soil

作　　者：刘嘉夫[1] 齐昕[1] LIU Jiafu;QI Xin(Chongqing Water Resources and Electric Engineering College,Chongqing 402160,China)

机构地区：[1]重庆水利电力职业技术学院,重庆402160

出　　处：《人民黄河》2020年第7期151-154,163,共5页Yellow River

摘　　要：为研究不同灌水方式对宁夏盐化土壤水分、盐分分布及油葵生长的影响,开展了田间定位试验,设置漫灌、沟灌、滴灌和渗灌4种灌水方式,通过监测土壤水分、盐分含量及油葵生长和产量指标,分析土壤水盐分布状况。结果表明:0~20 cm土层,渗灌方式土壤含水率最高,含盐量最低;沟灌方式土壤含水率最低,含盐量最高,水分生产率最低;滴灌和渗灌处理能促进油葵出苗和生长,滴灌处理油葵的水分生产率最高,为17.51 kg/m^3。滴灌是适宜于该地区盐化土壤种植油葵的灌水方式。In order to study the effects of different irrigation methods on soil moisture,salinity distribution and the growth of oil sunflower in saline soil in Ningxia,a field positioning experiment was conducted in this study.The four irrigation methods of flood irrigation,furrow irriga⁃tion,drip irrigation and seepage irrigation were set up to monitor the soil moisture,salt content,the growth of oil sunflower and yield indica⁃tors to analyze soil water and salt distribution.The results show that under the seepage irrigation mode the soil moisture is the highest and the salinity is the lowest in the 0-20 cm soil layer.The soil moisture content is the lowest,the salt content is the highest and the productivity is the lowest under the furrow irrigation method.Drip irrigation and seepage irrigation can promote the emergence and growth of oil sunflower.The water productivity of drip irrigation is 17.51 kg/m^3.Therefore,drip irrigation is suitable for planting oil sunflower in the region of salin⁃ized soil.

关 键 词：灌水方式 盐化土壤 含水率 盐分 水分生产率 

分 类 号：S156.4[农业科学—土壤学]