基于化学计量学分析生物炭-N配施的联合效应  

Stoichiometric analysis of combined effect of biochar and nitrogen application

作　　者：王立[1] 鞠畅 陈荣健 油勇强 WANG Li;JU Chang;CHEN Rongjian;YOU Yongqiang(State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology),Harbin 150090,China;Yichun Luming Mining Co.,Ltd.,Tieli 152500,Heilongjiang,China)

机构地区：[1]城市水资源与水环境国家重点实验室(哈尔滨工业大学),哈尔滨150090 [2]伊春鹿鸣矿业有限公司,黑龙江铁力152500

出　　处：《哈尔滨工业大学学报》2023年第2期19-26,共8页Journal of Harbin Institute of Technology

基　　金：生物质能源开发利用国家地方联合工程研究中心项目(2021C001);黑龙江省应用技术研究与开发计划(GA20C014)。

摘　　要：为探讨新型土壤调理剂——生物炭及氮肥配施对土壤养分调理的影响,采用培养实验结合化学计量方法分析玉米秸秆生物炭(SBC)、鸡粪生物炭(MBC)和氮肥(尿素)配施的添加效应。结果表明:生物炭能够提高土壤养分质量分数,但其调理效果具有剂量依赖性和种类异质性。随着生物炭用量的提高,土壤养分质量分数呈上升趋势。SBC处理使土壤有机碳(SOC)和全磷(TP)质量分数最高提升101.754%和34.592%。MBC处理使土壤SOC和TP质量分数最高提升了23.684%和84.396%。SBC通过诱导土壤SOC质量分数的提高进而提高土壤碳氮质量比(C/N)和碳磷质量比(C/P)。而MBC处理则通过磷剂量稀释效应降低了土壤C/P和氮磷质量比(N/P)。生物炭和氮肥之间不是单一的叠加效应,实际应用过程中应充分考虑氮肥与生物炭的交互效应。The effects of combined application of biochar(a new type of soil conditioner)and nitrogen fertilizers on soil nutrient conditioning were investigated.The incubation experiment based on stoichiometric method was carried out to analyze the additive effects of the combined application of corn straw biochar(SBC),chicken manure biochar(MBC),and nitrogen fertilizer(urea).Results show that biochar improved the contents of soil nutrients,but its conditioning effect was dose-dependent and heterogeneous among species.The nutrient content of the soil increased in parallel with the dosage of biochar.Treatment with SBC increased the contents of soil organic carbon(SOC)and total phosphorous(TP)by 101.754%and 34.592%respectively,while treatment with MBC increased the contents of SOC and TP by 23.684%and 84.396%respectively.SBC increased C/N(ratio of SOC to total nitrogen(TN))and C/P(ratio of SOC to TP)by promoting SOC,while the MBC treatment decreased C/P and N/P(ratio of TN to TP)by the dose-diluting effect of phosphorus.There was not a single additive effect between the biochar and nitrogen fertilizer,and the interactive effect of nitrogen fertilizer and biochar should be fully considered in actual application.

关 键 词：生物炭 土壤调理剂 土壤养分平衡 化学计量 剂量依赖性 种类异质性 

分 类 号：X71[环境科学与工程—环境工程]