污水灌区土壤盐分动态研究  

THE DYNAMICS OF SOIL SALINITY IN A SEWAGE IRRIGATION AREA

作　　者：蔡思义[1] 郑振华[1] 陆华[1] 杨虹 张金凤[1] 

机构地区：[1]农业部环境保护科研监测所,天津300191

出　　处：《环境科学学报》1992年第2期174-181,共8页Acta Scientiae Circumstantiae

摘　　要：以天津东郊污灌区(慢速渗滤系统)为试验点,总结了土壤盐分的变化规律,并以粮地、菜地、稻地为代表分析了土壤中盐分变化动态,用污灌区土壤盐分动态平衡公式C_K-C_h=C_B-C_O测算,结果表明,只要灌区排水条件好,加上合理的科学灌溉,污灌区土壤盐分变化趋势是脱盐占主导地位,土壤中的钠吸附比(SAR)有所改善,土壤质量有所提高.The study was carried out in east suburb at Tianjin during the period of 1988-1989. The variation in a slow rate infiltration system of sewage irrigation area was summed up. Meanwhile, according to the results of analysis, the dynamic variations of soil salinity in crop field (corn-wheat), vegetable field (eggplant-chinese cabbage) and rice field, and the continuous monitoring, the dynamic balanced formula of soil salinity in sewage irrigation area is CK-Ch = CB-Co. The eventual result is: if the condition of drainage is good and irrigation is reasonable, the variation trends of soil salinity would be desalted. Moreover, the SAR of soil and the soil quality are improved.

关 键 词：污水灌溉 慢速渗滤系统 土壤盐分 

分 类 号：X825[环境科学与工程—环境工程]