title: [Effects of biochar application on greenhouse gas emission from paddy soil and its physical and chemical properties].
abstract: A field experiment was conducted to investigate the effects of rice straw returning and rice straw biochar and life rubbish biochar application on the greenhouse gas (CH4, CO2 and N2O) emission from paddy soil, its physical and chemical properties, and rice grain yield. Compared with rice straw returning, applying rice straw biochar decreased the cumulative CH4 and N2O emissions from paddy soil significantly by 64.2% - 78.5% and 16.3% - 18.4%, respectively. Whether planting rice or not, the cumulative N2O emission from paddy soil under the applications of rice straw biochar and life rubbish biochar was decreased significantly, compared with that without biochar amendment. Under the condition of no rice planting, applying life rubbish biochar reduced the cumulative CO2 emission significantly by 25.3%. Rice straw biochar was superior to life rubbish biochar in improving soil pH and available potassium content. Both rice straw biochar and life rubbish biochar could increase the soil organic carbon content significantly, but had less effects on the soil bulk density, total nitrogen and available phosphorus contents, cation exchange capacity (CEC), and grain yield. It was suggested that compared with rice straw returning, straw biochar was more effective in improving rice grain yield.
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China. liuyuxue505@163.com
authors.forename: Yu-xue
authors.initials: YX
authors.lastname: Liu
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Yao-feng
authors.initials: YF
authors.lastname: Wang
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Hao-hao
authors.initials: HH
authors.lastname: Lü
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Tang
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Chun-yan
authors.initials: CY
authors.lastname: Wu
authors.affiliation: Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China.
authors.forename: Zhe-ke
authors.initials: ZK
authors.lastname: Zhong
authors.affiliation: Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Sheng-mao
authors.initials: SM
authors.lastname: Yang
mesh_terms: D000383:Agriculture / Q000379:methods; D002245:Carbon Dioxide / Q000032:analysis; D002606:Charcoal / Q000737:chemistry*; D005740:Gases / Q000032:analysis*; D017752:Greenhouse Effect; D008697:Methane / Q000032:analysis; D012275:Oryza / Q000737:chemistry* / Q000254:growth & development; D018547:Plant Stems / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*
chemical_list: D005740:Gases; D012987:Soil; C540010:biochar; D002245:Carbon Dioxide; D002606:Charcoal; D008697:Methane