摘要
在室内测定并利用Hydrus软件模拟了在滴灌头埋深20 cm时黄河滩地土壤中水分的入渗及剖面分布规律。结果表明:在滴头下方10 cm处的土壤含水量明显低于在滴头附近的;在滴头上方10 cm处的土壤含水量在滴灌结束时接近0.13 cm/cm3;湿润锋纵向运移距离明显大于径向的,其中以湿润锋下径运移最快。经对比验证,本研究模拟计算结果与观测值较为吻合。
The water infiltration and profile distribution in lowland soil of the Yellow River under the condition of 20-cm-deep drip irrigation were studied through indoor measurement and software Hydrus simulation. The results showed that the water content in the 10-cm-distant soil under the dripper was obviously lower than that in the soil around the dripper. The water content in the 10- cm-distant soil above the dripper after the end of drip irrigation was about 0.13 cm/cm3. The wetting front had a significantly bigger vertical move distance than radial move distance, and its downward movement was the fastest. Through comparison and verification, the simulated results of this study were basically consistent with the observed results.
出处
《江西农业学报》
CAS
2015年第8期40-43,共4页
Acta Agriculturae Jiangxi
基金
河南省郑州市科技攻关项目"根灌条件下湿润锋运移规律及节水技术研究"(131PPTGG413-3)
关键词
黄河滩地
土壤
Hydrus模拟
滴灌
水分入渗
Lowland of the Yellow River
Soil
Simulation by Hydrus
Drip irrigation
Water infiltration
