炭化及改性牛粪添加对盐碱化草地土壤的改良 效应评估

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中图分类号：S156.4+1 文献标识码：A 文章编号：1007-0435（2026）01-0331-09

Abstract：Soil salinization of grassland seriouly affects the development of regional animal husbandry.It is urgent to improve the salinized land to enhance its quality and ensure the ecological securityof grassand production.In this study，catle manure （NF）was utilized as raw material to produce biochar through carbonization at different temperatures （ 400∘C ，NF4; 500∘C ，NF5），with corresponding Ca（NO3） 2 -modified counterparts （Ca4，Ca5）.These amendments were systematically evaluated for their remediation effects on saline-alkali grassland soils，to provide data and technical support for sustainable manure valorization and salinized soil improvement. Biochar and its modified counterparts amendments significantly reduced both soil pH and total alkalinity （ ⋅P<0.05⟩ ，with NF4 showing the greatest pH decrease and NF5 exhibiting the maximum alkalinity reduction. Soluble sodium content was significantly reduced （ （P<0.05） ，with NF4 and Ca4 showing the highestreductions.Biochar amendments also significantly increased soil organic carbon（ P<0.05 ，availablephos phorus，and exchangeable potassum，with carbonized manure demonstrating the greatest improvements.Over all，NF4 optimally balanced alkalinity reduction and nutrient enhancement，suggesting its priority for salinealkali soil remediation when using cattle manure to improve saline soil.

Key words：Saline soil; Carbonized manure;Manure modification;Soil alkalinity ;Soil nutrients

在自然因素与不合理利用水土资源等人类活动的共同作用下，土壤表层可溶性盐含量不断增加导致水盐失调形成土壤盐碱化[]。（剩余19416字）