华南农业大学学报2025，Vol.46Issue(3)：358-369,12.DOI:10.7671/j.issn.1001-411X.202406002
生物炭和生物炭基肥对林木生长和土壤肥力的影响
Effects of biochar and biochar-based fertilizer on forest growth and soil fertility
摘要
Abstract
[Objective]In order to study the impacts of biochar and biochar-based fertilizer application on the growth,nutrient uptake,and soil fertility of Michelia macclure,and provide a scientific foundation for encouraging the use of biochar in nutrient management on forest land.[Method]Taking the young forest of M.macclure as the research object,six treatments were set up,including no fertilization(CK)and application of compound fertilizer(CF),rice husk biochar(RB),wood chip biochar(WB),rice husk biochar-based fertilizer(RBF),and wood chip biochar-based fertilizer(WBF).After one year,the growth indices,quality indices,nutrient contents,and soil physicochemical properties of M.macclurei were measured.[Result]Compared with CK,the biomass,leaf area,leaf N content,and root N accumulation of M.macclure treated with biochar significantly increased,with the increases of 59.1%-62.2%,44.7%-66.0%,29.5%-45.4%,and 68.6%-92.3%,respectively.The Dickson quality index and whole-plant N,P,and K accumulations increased significantly when compound and biochar-based fertilizers were applied,with the increases of 136.8%-192.2%,167.7%-267.4%,124.4%-224.5%,and 191.5%-265.5%,respectively.Moreover,the application of compound fertilizer and biochar-based fertilizers had a greater impact on the growth of M.macclurei than the application of biochar alone.Compared to application of compound fertilizer alone,the application of biochar-based fertilizer was found to promote both plant growth and soil improvement.The RBF treatment significantly increased the soil pH,soil quick-acting K content,and SPAD value by 13.4%,6.2%,and 99.7%respectively,while the WBF treatment significantly increased the whole-plant P and K accumulations and total biomass by 31.5%,44.6%,and 22.1%respectively,and the soil bulk density significantly decreased by 17.3%.The fuzzy affiliation function revealed that the overall impact of treatments on M.macclurei growth and enhancement of soil physico-chemical qualities was evaluated in the following order:WBF＞RBF＞CF＞WB＞RB＞CK.[Conclusion]Both biochar and biochar-based fertilizer can enhance soil physicochemical qualities and successfully encourage the growth and uptake of nutrients by M.macclurei,and wood chip biochar-based fertilizer yields the greatest overall results,which offers a novel approach for managing nutrients in forest areas.关键词
生物炭基肥/生物炭/火力楠/植物生长/土壤理化性质Key words
Biochar-based fertilizer/Biochar/Michelia macclurei/Plant growth/Soil physicochemical property分类
林学引用本文复制引用
肖琳,冯为迅,罗志忠,黎竟,陆洁,朱洁怡,曾曙才..生物炭和生物炭基肥对林木生长和土壤肥力的影响[J].华南农业大学学报,2025,46(3):358-369,12.基金项目
广东省林业科技创新项目(2022KJCX015) （2022KJCX015）
