膨润土与生物炭配施对风沙土壤磷相关酶活性及供磷能力的影响

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中图分类号X171文献标识码A

文章编号 0517-6611（2025）11-0137-06

doi：10.3969/j. issn. 0517-6611.2025.11. 030

开放科学（资源服务）标识码（OSID）：

Efects of Combined Aplicationof Bentoniteand Biochar onPhosphorus-related Enzyme Activities and Phosphorus Suply Capacity of Sandy Soil

LONG Qing，ZHAO Xue-song，WANGLi-ngetal（CollgeofEnvromentalcienceandEnginering，LiaoningTchcalUnvesiy， Fuxin，Liaoning ）

AbstractThispapersudedtefectsofentoiteandoarwitdiereonolitecontentsonteactivityofposposelated enzmes，pospousalabilitlantpospousbsorptiondplntoassindndsilatftpropoos.elssd thatthecombinedaplicatiooftetwoouldsignificantlyincreasesoilposphorus-relatedeeactivityadpospousavalabilityas wellasplantpspusabsotionandplntdryeight，andtereasasignificantiteractionbtweenmonoloiteontentadicr application amount. The best effct was achieved when the montmorilonite content in bentonite was 83.5% and the biochar application amount was 1200kg/hm2 .Redundancyanalysis showed that organic carbon was the most important factor afecting plant phosphorusabsorption，and thecoelaionetwnactivityandsolproprisastestrongestTestructuraluationodelshoedtatteiceaseialie phosphataseactivityselatedtoochar，teicreaseiacidpospataseactivityasrelatedtobentoitendteicreaseintaseand phosphodiesteraseactieswasrelatedtoothbiochaandbentonite;HYandALPadsignificantposiefetsonavalablepospos contentandplantposporusabsorptio.Tesersultsshowedthatthecombinedaplicatioofbentoiteandbocharcouldimprovoilpos phorussupplycapacitybyincreasingALPandPYactivitiesinsandysoil，withbiocarmakingtegeatestcontributionReasoablesel tionof the montmorilloitecontentand biocharapplicationamount in bentonitecould more efectivelyincreaseplantbiomass.

Keywordseolasandsoil;entoiteocharapplicatio;ospous-elatedeeactivityospousabsorptio;osoail bility

磷是植物生长不可或缺的养分，也是农业生产中最重要的养分限制因子[1]。（剩余10799字）