【摘要】 提高侵蚀林地土壤肥力，是增加林下植被覆盖，减少林下水土流失的关键。以江西省严重侵蚀地恢复形成的马尾松林地为研究对象，评估有机肥、生物炭和石灰+微生物肥等三种肥力提升措施对林地土壤质量的改良作用。结果表明：各种措施均能提高土层(0～2 cm和2～5 cm)pH值，且对2～5 cm土层pH值提高作用更明显，提高效果为生物碳>石灰+微生物肥>有机肥；各种措施均能提高0～2 cm和2～5 cm土层土壤养分含量，依次为有机肥>生物炭>石灰+微生物肥，但不同肥力提升措施主要提高的营养元素种类不同；各肥力提升措施对土壤酶活性的提高主要显现在0～2 cm土层，具体为有机肥>石灰+微生物肥>生物炭，不同提升措施主要提高的土壤酶种类也不同；隶属函数法综合评价表明三种肥力提升措施均能大幅度提高林地表层土壤质量，表现为有机肥>石灰+微生物肥>生物炭。本研究结果能为劣质林地土壤改良提供理论依据和技术支撑。更多还原

【Abstract】 Improving the soil fertility of eroded forest land is the key to increasing understory vegetation coverage and reducing understory soil erosion.In this study, surface soil in Pinus massoniana forest land recovered from severely eroded land in Jiangxi Province was taken as the research object to evaluate the fertility improvement effects of organic fertilizer, biochar and lime+microbial fertilizer on soil quality.The results show that all measures could increase the soil pH value, and the effect on the pH value of the 0～2 cm soil layer was more obvious; The improvement effect was biochar > lime+microbial fertilizer > organic fertilizer.All fertility improvement measures could increase the nutrient content of 0～2 cm and 2～5 cm soil layers; The improvement effect was organic fertilizer > biochar > lime+microbial fertilizer, but the main types of nutrient elements improved by different fertility improvement measures were different.The improvement of soil enzyme activity by various fertility improvement measures was mainly in the 0～2 cm soil layer, and the improvement effect was organic fertilizer > lime+microbial fertilizer > biochar; The main types of soil enzymes improved by different improvement measures were also different.The comprehensive evaluation of membership function method shows that the three fertility improvement measures could greatly improve the surface soil quality of forest land, and the improvement effect was organic fertilizer > lime+microbial fertilizer > biochar.The results of this study can provide theoretical basis and technical support for soil improvement of inferior forest land.更多还原