盐碱地土壤酶活性研究进展和展望

盐碱地是农业生产重要的后备土地资源,同时土壤盐渍化是灌溉农业生产过程中首要考虑的问题之一。近年来,越来越多的研究开始关注盐碱地改良利用过程中包括土壤生物学性质在内的土壤整体环境质量的改善。其中,土壤酶是土壤生物活动的产物,其活性水平是土壤环境质量的良好生物学指标,可以用来评价土壤退化程度及管理措施的效果和可持续性。本文总结说明了盐渍化土壤酶活性状况及盐碱胁迫机理,并对盐碱地改良利用过程中土壤酶活性的研究现状进行了综述。最后从存在问题和关注热点出发,提出了下一步的研究重点。

Research Advance and Prospect of Soil Enzymes Activities in Saline-alkali Soils

Saline-alkali soil is the important reserve land resource of agricultural production,and soil salinization is one of the first issues during the irrigated agricultural production.In recent years,it has drawn greater attentions to investigate the amelioration of soil environmental quality including soil biological properties,during the reclamation of saline-alkali soils.Soil enzyme,which is the products of biological activity,is a good indicator to soil environmental quality.Soil enzyme activity can be used to evaluate the degree of soil degradation,amelioration efficiency and the sustainability of agricultural practices.This paper summarized the current studies on soil enzymes activities in saline-alkali soils,and illustrated the stress mechanisms of soil salinity and sodicity on soil enzymes activities.The studies of soil enzyme activities in saline-alkali soils during the reclarnation also were reviewed.Finally,based on the existing problems in current studies and the hotspot of social attention,an attempt was made to identify research gaps for future research.