不同配比改良剂对土壤理化性质及有机碳组分的影响

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关键词风沙土；改良剂协同作用；土壤理化性质；活性有机碳;正交优化

中图分类号S156;X171文献标识码A

文章编号 0517-6611（2025）21-0071-06

doi ： 10.3969/j . issn. 0517-6611.2025.21. 014

AbstractInesposetoteeedolanndysoiliprovntineHorsndyndtogaleperimentsseigate theefectsofobdplcatooftoiteiadicalertliesooilpysicoicalpropertsdgaicrbda ics.16 treatment levels [L16（43）] were set up to systematicaly analyze the change regularitys ofbulk density，moisture content，nutrient contentandorganiccarbonfractions.Theresultsshowedthattheamendmentssignificantlyoptimizedthephysicalstructureofthesoil（ 14.53% reduction in bulk density），improved water retention capacity（the maximum increase of 550. 42% ）and promoted nutrient accumulation（the maximum increases of 466.67% ， 428.57% and 101.88% for TN， ΔTP and TK，respectively），ofwhich the A2B4C3 treatments（bentonite montmorillonite content 83.5% ，biochar 1.2/m2 ，and 322.5kg/hm2 ）. Pearson correlation analysis revealed that soil organic carbon （SOC） wasextremely significantly negatively correlated with bulk weight（ P/<0.01 ），extremelysignificantly positively correlatedwith water content andquick-acting nutrients.Particulateorganiccarbon（POC）exhibited thestrongestcorrelation withsoil organiccarbon（SOC）（ r=0.70 ）. Redundancy analysis（RDA）indicateed that moisture content accounts for 81.8% of the variation in organic carbon components，which was notably higher compared to other influencing factors.

KeywordsAeolanadysoil;Sygismofmendent;Soilphsicocheicalpropertis;Actieoranicarbo;Orthogonalotiatio

土壤碳库被视为碳循环中的关键部分，同时它也与人们的日常生活息息相关[1]。（剩余12462字）