西北林学院学报2011，Vol.26Issue(5)：59-65,7.
草坪在地下滴灌条件下的土壤水分运移规律研究
Dynamics of Water Movement in Subsurface Soil of Drip Irrigated Lawn
摘要
Abstract
In order to understand the soil moisture migration rules of the lawn with subsurface drip irrigation (SDI) , the infiltration experiment of SDI on the grass in the field was carried our by two water supply modes single and grid emitters. The results showed that under the water supply of single emitter, the soil moisture content changed quickly in horizontal direction when the irrigation lasted for 1 hour, the water could move 15 cm from the head of emitter within 45 min, 20 cm within 60 min, and 30 cm with 90 min. The rate of variation of soil water changed smoothly with the range of 20 - 30 cm. Under the water supply of grid emitters, superimposition effects were observed among the emitters. When the irrigation lasted for 1 hour by the grid emitters with the distance of 30 cm, the soil moisture content increased sharply ranged from 0-15 cm, superimposition effects appeared after 90 min. There was no obvious superimposition effect of soil moisture in perpendicular direction. After the irrigation, soil moisture would move to the area with the low moisture content, and the re-distribution was formed with very gentle changes, and these areas became stable in 24 hours after irrigation.关键词
草坪；地下滴灌；土壤含水率；土壤水分运移Key words
lawn/ subsurface drip irrigation/ soil moisture content/ soil water movement分类
农业科技引用本文复制引用
黄志勇,刘荣秀,韩烈保..草坪在地下滴灌条件下的土壤水分运移规律研究[J].西北林学院学报,2011,26(5):59-65,7.基金项目
国家林业局林业科学技术推广项目—裸露坡面植被恢复综合技术示范推广(2011-31号). （2011-31号）
