施肥对阿尔泰山补播天然割草地植被-土壤-微生物的影响

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中图分类号：S812 文献标识码：A 文章编号：1007-0435（2026）02-0491-10

Abstract：Inthis experiment，the effects of single application oforganic fertilizer and mixed applicationof organic fertilizeron the restoration of degraded natural mowing land were evaluated from the perspective of vegetationsoil-microorganism.The natural mowing land in Altay Mountains was used as the objectof study.Three fertilization measures，single application oforganic fertilizer（M），mixed application oforganic fertilizerand biologicalfer tilizer （M+NY） ，mixed application of organic fertilizer and compound fertilizer （M+NPK） ，were used to explore the responses of grassland vegetation-soil-microorganism to fertilization.The results showed that fertilization signifcantly increased grassland community height，biomass，soil organic matter content，available nitrogen， available phosphorus，available potassium content and electrical conductivity （ P<0.05） ，and significantly reduced soil pH value （ ⋅P<0.05） . There were significant differences in the richness of 5 phyla in soil bacteria （ P< O. 05），and there were significant diferences in the richness of 2 phyla in soil fungi （ ⋅P<0.05 ）. The grey system correlation degree showed that compound fertilizer + organic fertilizer had the best effect on promoting vegetation growth，improving soil nutrients and increasing the number of microorganisms，and had arapid recovery effecton the vegetation-soil-microbial system of reseeding natural mowing land.The results of the experiment provide theoretical basis，data support and technical support for the production and restoration of organic fertilizer single application and organic fertilizer mixed with other fertilizers in reseeding natural mowing land. Key words：Organic fertilizer;Reseeding natural mowing land; Vegetation characteristics;Soil microorganisms

天然割草地在阿勒泰的牧区具有举足轻重的作用，它可为家畜提供冬、春季饲草，缓解冬、春、秋季草场超载过牧的压力，在防灾减灾和保障畜牧业安全方面发挥着至关重要的作用。（剩余15795字）