[Objective]To study the utilization of biochar resources and solved its problems.[Method] Taking the biochar after the coprocessing anaerobic digestion of kitchen waste and sewage sludge of Zhenjiang city to be the subject of research,the optimum proportion of biochar for seedling cultivation substrate,flower culativation substrate and roof greening substrate were studied.[Result] The vesults showed that the optimum biochar compost application ratios were 40％ ～ 50％ when it as cultivated substrate of nursery stock,and it was obtained at 50％ or 10％ biochar compost ratio for cultivated flowers substrate of outdoor or indoor.In addition,the substrate of the biochar and garden waste compost were mixed vermiculite and perlite in accordance with the ratio of 2∶ 1∶0.5 can be covered with the requirements of green roof plants.[Conclusion] Kitchen waste and seuage sludge anaerobic digestion biogas-synergistic biological corbon soil can be used as matrix seedling planting,flower cultivation and green root cultivation.%[目的]探究生物炭土资源化利用途径,解决其消纳的问题.[方法]以镇江市生活污泥与餐厨废弃物协同厌氧消化后的生物炭土为研究对象,研究生物炭土用于苗木栽培基质、花卉栽培基质、屋顶绿化栽培基质的最佳比例.[结果]生物炭土用于苗木栽培基质的最佳比例为40％～50％,用于室外盆栽花卉基质的最佳比例为50％,用于室内盆栽花卉基质的最佳比例为10％.园林绿化废弃物的堆肥产品与蛭石、珍珠岩按照2∶1∶0.5混配后的基质可以满足屋顶绿化的要求.[结论]餐厨废弃物与生活污泥协同厌氧消化后沼渣——生物炭土可作为苗木栽培、花卉栽培、屋顶绿化栽培的基质.
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