再生水灌溉对土壤质量影响研究综述

从再生水灌溉对土壤的物理性质、pH值、全盐量、肥力、微生物、重金属、有机污染物等7个方面,总结了近年来国内外学者在再生水灌溉对土壤质量方面的研究进展。现有研究表明:再生水灌溉除在土壤盐分、微生物活性及有机污染物含量方面得出研究结果一致外,其他方面研究结果存在分歧。研究内容涉及面广,主要侧重效应研究。今后,应在再生水灌溉对土壤质量机理和机制方面做深入研究、加强对多因素田间试验的研究、重点利用模型研究再生水灌溉对土壤盐分、重金属及有机污染物的运移趋势和规律,评估可能造成的生态风险。为在避免环境污染的前提下,达到充分利用再生水来缓解中国缺水基本国情的目标提供更科学的理论依据及指导。

Review of Study on Effect of Reclaimed Water Irrigation on Soil Quality

This paper summarized the advance of domestic and overseas study on reclaimed water irrigation on soil quality from seven as-pects, including physical properties, pH, soluble, fertility, microbes, heavy metals and organic pollutants.The present study results show that:except for the aspects of soil salinity, microbial activity and content of organic pollutants, there exists divergence for other aspects of study results on reclaimed water irrigation.The present research content is broad and mainly focuses on the effect.It is put forward that from now on, the mechanism of soil quality should be studied more deeply;the multifactor field experimental should be strengthened;the model for the effect of reclaimed water irrigation on the tendency and laws of soil salinity, heavy metal and organic pollutant should be studied inten-sively to evaluate the potential risk.The research results should supply scientific theoretical base and reference for the use of reclaimed water to alleviate the water-lack situation of China on the premise of avoiding environmental pollution.