农业机械学报2017，Vol.48Issue(4)：242-249,8.DOI:10.6041/j.issn.1000-1298.2017.04.031
微孔陶瓷渗灌与地下滴灌土壤水分运移特性对比
Comparison of Characteristics of Soil Moisture Transfer for Porous Ceramic Infiltration Irrigation and Subsurface Drip Irrigation
摘要
Abstract
Aiming to have insights into characteristics of soil moisture transfer of porous ceramic infiltration irrigation,soil moisture transfer experiment was conducted by using porous ceramic emitter,of which the working head was 0 m,meanwhile,subsurface drip irrigation tape with working head of 10 m was used to carry out a control test.The comparisons of cumulative infiltration,emitter discharge,wetting soil characteristic and change of soil water content of two different irrigation methods were made.The results indicated that when the irrigation time was the same,the cumulative infiltration,wetting front and wetting zone sectional area of porous ceramic infiltration irrigation were less than those of subsurface drip irrigation.The discharge of porous ceramic infiltration irrigation was decreased gradually with the increase of time,which was closed to 0 L/h at last,in contrast,the discharge of subsurface drip irrigation was relatively stable.In the late experimental period,soil water contents in the wetting zone of porous ceramic infiltration irrigation were changed slightly.While water contents of subsurface irrigation were increased continuously,and then they got decreased after stopping irrigation because of soil water redistribution.Because porous ceramic infiltration irrigation was a continuous irrigation method,thus it could provide a constant soil moisture environment for crops.But subsurface drip irrigation was a passive and intermittent irrigation method,and soil moisture environment for crops was alternate drying-wetting.The present study provided valuable information for the popularization and application of porous ceramic infiltration irrigation.关键词
微孔陶瓷/渗灌/地下滴灌/土壤水分运移/土壤含水率Key words
porous ceramic/infiltration irrigation/subsurface drip irrigation/soil moisture transfer/soil water content分类
农业科技引用本文复制引用
蔡耀辉,吴普特,张林,朱德兰,任改萍,陈俊英..微孔陶瓷渗灌与地下滴灌土壤水分运移特性对比[J].农业机械学报,2017,48(4):242-249,8.基金项目
“十二五”国家科技支撑计划项目(2015BAD22B01-02)、国家自然科学基金项目(51409221)、西北农林科技大学基本科研业务费专项资金项目(2014YB061)和石河子大学高层次人才科研启动资金专项(RCZX201434) （2015BAD22B01-02）
