摘要
探索适合滨海盐渍土区的水土保持技术,江苏省水利科教中心在东川农场采取小区对比试验方法,研究聚丙烯酰胺(PAM)同3种牧草对滨海盐渍土区实施水土保持。研究表明:PAM的施用对3种牧草均有促进土壤提高抗侵蚀能力的作用,可减少土壤侵蚀量,提升雨水截留量;1g/m^2的PAM施用后,其水土保持效率最高,可减少年侵蚀量42.8%~46.7%。PAM的施用可抑制土壤腾发总量28.7%~40.4%,增大土壤水分散失量5.0%~12.4%,有利于防治滨海盐渍土区水土流失,改善生态环境。
Studies are made on the approach of soil conservation by using Polyacrylamide（PAM） cooperated with three types of pasture grasses to recover salinized soil in coast area.The study shows that PAM can enhance the ability of erosion control,reduce soil loss and increase amount of intercepted rainwater after it applied to these three types of grass.When 1g/m^2 of PAM is applied,the efficiency of soil conservation turns to be the highest and can reduce the amount of annual erosion by 42.8%~46.7%.The adoption of PAM can restrict the evapotranspiration of soil by 28.7%~40.4%,increase loss of soil moisture by 5.0%~12.4%,which is beneficial for control of soil and water loss in salinized land and eco-environment restoration in coast areas.
出处
《中国水利》
2016年第2期51-54,共4页
China Water Resources
基金
江苏省重点水利科技项目(2014017)
关键词
滨海盐渍土
牧草
聚丙烯酰胺(PAM)
水土保持
salinized soil in coast area
pasture grass
polyacrylamide（PAM）
soil and water conservation
