复合型混播地被草组合建植对盐碱地生态修复效果评价

Evaluation of the Effect of Composite Mixed Groundcover Grass Combination on Ecological Restoration of Saline-alkali Land

本文旨在分析我国滨海盐碱地生态修复和改良问题的现状,探究其影响因素及应对策略。通过梳理相关文献和研究,我们发现尽管在国内外对盐碱地生态修复问题的研究已经取得了一定的进展,但仍存在一些问题和挑战。为应对这些问题和挑战提高盐碱地修复的生态效益和经济效益,本文提出了通过引种苜蓿与本土的碱蓬和无芒雀麦两种耐盐碱植物进行混播,形成不同比例的复合型植物生境措施。通过研究试验地有机物和pH变化发现,组合中苜蓿与无芒雀麦混播2∶1的有机质效益较优达到了13.45 g/kg并且对土壤改良影响最为明显,综合效果最好。

The purpose of this paper is to analyze the current situation of ecological restoration and improvement of coastal saline-alkali land in China,and to explore its influencing factors and coping strategies.By combing through the relevant literature and research,we found that although some progress has been made in the research on the ecological restoration of saline-alkali land at home and abroad,there are still some problems and challenges.In order to cope with these problems and challenges and improve the ecological and economic benefits of saline-alkali land restoration,this paper proposed a composite plant habitat measure of different proportions by introducing alfalfa and mixing two saline-alkali tolerant plants,Suaeda salsa and Amacantha sativa.Through the study of the changes of organic matter and pH in the experimental plots,it was found that the organic matter benefit of alfalfa mixed with A.sangis at 2∶1 was better than 13.45 g/kg,and the effect on soil improvement was the most obvious,and the comprehensive effect was the best.