微咸水滴灌对土壤水盐运移影响的研究  

Study on the Effects of Brackish Water Drip Irrigation on Soil Water and Salt Movement

作　　者：郭安安 王梦琴 王为木[1,2] 刘鑫娜 胡祺杰 Guo Anan(College of Agriculture Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学农业工程学院,江苏南京210098 [2]河海大学水利学科专业实验教学中心,江苏南京210098

出　　处：《安徽农学通报》2019年第12期118-121,共4页Anhui Agricultural Science Bulletin

基　　金：国家重点研发计划项目(2018YFD0900805)

摘　　要：目的:研究田间条件下微咸水滴灌对土壤水盐运移的影响。方法:通过在河海大学节水园区内栽培番茄小区试验,对3种滴头流量(2、3、4L/h)及2种灌溉水矿化度(2、4g/L)对微咸水点源滴灌入渗后的土壤水盐运移进行研究。结果:在纵向及水平向距离滴头5~15cm土层,土壤含水率随灌溉水矿化度及滴头流量的增大而增大;随着灌溉水矿化度的增大和土层深度增加,盐分累积量也越大;滴头流量越小,表层脱盐效果越好。结论:微咸水滴灌最好采用较小的灌溉水矿化度和滴头流量。Objective:To study the effects of brackishwater drip irrigation on soil water andsalt movement in field. Method:Field experiments of tomatoes were conducted to investigate the effects of dripper flow(2,3,4 L/h)and brackish water salinity(2,4 g/L)onsoil water andsalt movement after the point source infiltration ofbrackish water in Water-saving Park of Hohai University. Result:With the increase of irrigation watersalinity anddripper flow,soil wa. ter content gradually increased in the soil layer,which is 5-15cm from the emitter in both vertical and horizontal di. rections.Soil salt accumulation increased with the increase of brackish water salinity and soil depth. The surface soil achieve better desalination effect with lower dripper discharge rate. Conclusion:Usingless brackish water salinity and lower dripper flow is better in brackish water drip irrigation.

关 键 词：滴头流量 灌溉水矿化度 土壤水盐运移 

分 类 号：S156.4[农业科学—土壤学]