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Fertilizer nitrogen uptake by rice increased by biochar application

文献类型： 外文期刊

作者： Huang, Min 1 ; Yang, Liu 2 ; Qin, Huadong 1 ; Jiang, Ligeng 1 ; Zou, Yingbin 3 ;

作者机构： 1.Guangxi Univ, Key Lab Crop Cultivat & Farming Syst, Nanning 530004, Peoples R China

2.Guangxi Acad Agr Sci, Nanning 530007, Peoples R China

3.Hunan Agr Univ, State Key Lab Hybrid Rice, Changsha 410128, Hunan, Peoples R China

4.Jiangxi Agr Univ, Collaborat Innovat Ctr Modernizat Prod Double Cro, Nanchang 330035, Peoples R China

关键词： Biochar;N loss;N uptake;Rice

期刊名称：BIOLOGY AND FERTILITY OF SOILS （ 影响因子：6.432； 五年影响因子：6.332 ）

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收录情况： SCI

摘要： This study was conducted to test the hypothesis that biochar application can increase rice yield through improving nitrogen (N) uptake and utilization by rice plants under N application conditions. A pot experiment was done with a hybrid rice cultivar grown on a Fe-leachi-Stagnic Anthrosols with and without biochar application. The N fertilizer used was N-15-labeled urea. Results showed that biochar application resulted in 23-27 % increase in fertilizer N uptake by rice plants and consequently 8-10 % increase in grain yield. The higher fertilizer N uptake under biochar application was associated with a reduced fertilizer N loss. Fertilizer N loss rate was reduced by 9-10 % by applying biochar. We suggest that further studies are needed to assess the short-term and long-term effects of different biochars on N uptake and utilization by rice under field conditions

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