中国烟草学报2018，Vol.24Issue(3)：53-61,9.DOI:10.16472/j.chinatobacco.2017.323
生物炭与氮肥配施对土壤生物特性和烤烟氮素吸收的影响
Effects of mined biochar and nitrogen fertilizer on biological characteristics of soil and nitrogen absorption of flue-cured tobacco
摘要
Abstract
In order to study the effects of mined biochar addition combined with nitrogen fertilizer on biological characteristics of soil and nitrogen absorption of flue-cured tobacco,pot experiment was unde rtaken with 15N trace technique.Fertilizer nitrogen residue,enzyme activity and soil microbial biomass carbon(SMBC)in soil,different sources nitrogen accumula tion of flue-cured tobacco at 90 days after transplanting were analysed.Compared with CK,enzyme activity of biochar addition combined with nitrogen fertilizer improved by 8.8％-19.5％,SMBC increased by 13.3％,15N residue promoted o n early stage,and nitrogen accumulation of flue-cured tobacco also increased.When the amount of nitrogen reduced moderately,biochar addition combined with nitrogen fertilizer improved catalase activity and nitrogen accumulation.Sucrase and urease activity were promoted at mid and late stages.It was concluded that biochar significantly promoted activity of urease,sucrase and catalase,and improved fertilizer nitrogen soil residue and nitrogen accumulation in tobacco.It proved feasible to reduce the amount of nitrogen moderately when biochar combined with nitrogen fertilizer was added during tobacco planting.关键词
生物炭/减氮/15N/土壤酶/微生物生物量碳/氮积累Key words
biochar/nitrogen reduction/15N/soil enzyme/soil microbial biomass carbon/nitrogen accumulation引用本文复制引用
吴嘉楠,彭桂新,杨永锋,任天宝,张璐,刘国顺..生物炭与氮肥配施对土壤生物特性和烤烟氮素吸收的影响[J].中国烟草学报,2018,24(3):53-61,9.基金项目
植烟土壤肥力培育及提高肥料利用率技术研究项目(30800665),基于土壤碳氮平衡的烟草专用肥工程化技术研发项目(ZW2014005) （30800665）
