紫花苜蓿连作对土壤理化性质影响的研究进展

Reviews on the Changes in Physical and Chemical Properties of Soil During Continuous Cropping of Alfalfa

紫花苜蓿是现代畜牧业发展的物质基础,也是人工草地种植面积最大的草种。文章主要从土壤质地与结构、水分、矿物质元素、有机质、呼吸及微生物方面,总结了近年来关于紫花苜蓿连作对土壤影响的研究进展,认为紫花苜蓿最适宜的连作年限为8年,若持续连作会导致土壤理化性质恶化,并建议通过实施苜蓿-作物轮作来改善草地生态环境,增加农业系统的稳定性。

alfalfa is the material basis on modern animal husbandry development, and has the largest cultivated area in artificial pasture. This review mainly aimed at the changes in soil texture and structure, moisture, mineral element, organic matter, respiration and microorganism to summarize the research on continuous cropping of alfalfa in recent years. The comprehensive analysis showed that the most suitable duration was 8 years for alfalfa during continuous cropping, thereafter, soil deterioration would be occurred. This article suggested that implementing rotation of alfalfa-crop could improve the grassland ecological environment, and increase the stability of the agricultural system.