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Influence of nitrogen loading and plant nitrogen assimilation on nitrogen leaching and N2O emission in forage rice paddy fields fertilized with liquid cattle waste

文献类型： 外文期刊

作者： Riya, Shohei 1 ; Zhou, Sheng 2 ; Kobara, Yuso 3 ; Sagehashi, Masaki 4 ; Terada, Akihiko 1 ; Hosomi, Masaaki 1 ;

作者机构： 1.Tokyo Univ Agr & Technol, Grad Sch Engn, Koganei, Tokyo 1848588, Japan

2.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China

3.Natl Inst Agroenvironm Sci, Organochem Div, Tsukuba, Ibaraki 3058604, Japan

4.Natl Inst Publ Hlth, Dept Int Hlth & Collaborat, Wako, Saitama 3510197, Japan

关键词： Forage rice;Cattle waste;Nitrogen cycling;Plant uptake;Nitrous oxide;Leaching

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

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收录情况： SCI

摘要： Livestock wastewater disposal onto rice paddy fields is a cost- and labor-effective way to treat wastewater and cultivate rice crops. We evaluated the influence of nitrogen loading rates on nitrogen assimilation by rice plants and on nitrogen losses (leaching and N2O emission) in forage rice fields receiving liquid cattle waste (LCW). Four forage rice fields were subjected to nitrogen loads of 107, 258, 522, and 786 kg N ha(-1) (N100, N250, N500, and N750, respectively) using basal fertilizer (chemical fertilizer) (50 kg N ha(-1)) and three LCW topdressings (each 57-284 kg N ha(-1)). Nitrogen assimilated by rice plants increased over time. However, after the third topdressing, the nitrogen content of the biomass did not increase in any treatment. Harvested aboveground biomass contained 93, 60, 33, and 31 % of applied nitrogen in N100, N250, N500, and N750, respectively. The NH4+ concentration in the pore water at a depth of 20 cm was less than 1 mg N L-1 in N100, N250, and N500 throughout the cultivation period, while the NH4+ concentration in N750 increased to 3 mg N L-1 after the third topdressing. Cumulative N2O emissions ranged from -0.042 to 2.39 kg N ha(-1); the highest value was observed in N750, followed by N500. In N750, N2O emitted during the final drainage accounted for 80 % of cumulative N2O emissions. This study suggested that 100-258 kg N ha(-1) is a recommended nitrogen loading rate for nitrogen recovery by rice plants without negative environmental impacts such as groundwater pollution and N2O emission.

  • 相关文献

[1]Assessing impacts of alternative fertilizer management practices on both nitrogen loading and greenhouse gas emissions in rice cultivation. Zhao, Zheng,Yue, Yubo,Sha, Zhimin,Cao, Linkui,Li, Changsheng,Deng, Jia,Zhang, Hanlin,Gao, Maofang. 2015

[2]Effects of N loading rate on CH4 and N2O emissions during cultivation and fallow periods from forage rice fields fertilized with liquid cattle waste. Riya, S.,Terada, A.,Hosomi, M.,Zhou, S.,Kobara, Y.,Sagehashi, M..

[3]Mitigation of Greenhouse Gas Emissions by Water Management in a Forage Rice Paddy Field Supplemented with Dry-Thermophilic Anaerobic Digestion Residue. Riya, S.,Katayama, M.,Takahashi, E.,Terada, A.,Hosomi, M.,Zhou, S..

[4]Nitrous oxide production and mRNA expression analysis of nitrifying and denitrifying bacterial genes under floodwater disappearance and fertilizer application. Riya, Shohei,Takeuchi, Yuki,Terada, Akihiko,Hosomi, Masaaki,Zhou, Sheng.

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