An optimal regional nitrogen application threshold for wheat in the North China Plain considering yield and environmental effects
文献类型： 外文期刊
作者：
Wang, Hongyuan
1
;
Zhang, Yitao
1
;
Chen, Anqiang
3
;
Liu, Hongbin
1
;
Zhai, Limei
1
;
Lei, Baokun
3
;
Ren, Tianzhi
4
;
作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Nonpoint Source Pollut Control, Beijing 100081, Peoples R China
2.Univ New Hampshire, Inst Study Earth Oceans & Space, Earth Syst Res Ctr, Durham, NH 03824 USA
3.Yunnan Acad Agr Sci, Agr Environm & Resources Inst, Kunming 6502052, Peoples R China
4.Minist Agr, Inst Agroenvironm Protect, Tianjin 300191, Peoples R China
关键词： Wheat yield;Nitrogen application rate;Soil inorganic nitrogen residual;Nitrate nitrogen leaching;Ammonia volatilization;Nitrogen threshold
期刊名称：FIELD CROPS RESEARCH （ 影响因子：5.224； 五年影响因子：6.19 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： North China Plain is the bread basket for Chinese. However, the over-use of N fertilizer has resulted serious environmental pollution and even threat the food security owing to the soil degradation in North China Plain. It is essential to develop a suit of optimal regional nitrogen application threshold. In this study, we attempted to build the threshold by using dataset of literature review and field experiments. Results showed that the optimal N fertilizer rate should be around 185 kg N ha(-1) for the wheat cultivation with achieved yield at 7000 kg ha(-1). Both literatures reviewed and field experiments agreed well on this threshold. The wheat yield under this optimal N fertilizer rate was about 2% lower than the theory maximum achievable yield (7203 kg ha(-1)) in this region; however, the N rate could be reduced by 25% compared to the N rate under the maximum yield. This threshold entailed decreases of 25.25%, 20.17%, 27.89% and 38.80% in nitrogen application rates, residual inorganic soil nitrogen (0-100 cm), nitrate leaching and ammonia volatilization, respectively, on the regional scale. In addition, reducing theory maximum achievable yield by 2% was not statistically significant and would not result in additional risks because fluctuations in wheat yields over time (-57.07% to 34.73%) and space (-23.78% to 33.07%) were higher than 2% in this area. (C) 2017 Published by Elsevier B.V.
- 相关文献
作者其他论文 更多>>
-
Human-caused increases in organic carbon burial in plateau lakes: The response to warming effect
作者：Yin, Jiqing;Li, Taohui;Zhang, Wenxiang;Yin, Jiqing;Li, Taohui;Zhang, Wenxiang;Yin, Jiqing;Hu, Wanli;Chen, Anqiang
关键词：Plateau lake; Organic carbon burial; Anthropogenic; Urbanization; Climatic warming
-
Shallow groundwater table fluctuations promote the accumulation and loss of phosphorus from surface soil to deeper soil in croplands around plateau lakes in Southwest China
作者：Chen, Qingfei;Min, Jinheng;Zhang, Dan;Chen, Qingfei;Chen, Anqiang;Hu, Wanli;Wang, Chi;Fu, Bin;Li, Wenchao
关键词：Shallow groundwater table fluctuation; Soil phosphorus accumulation; Soil phosphorus loss; Cropland; Soil profile
-
Shallow groundwater table fluctuations weaken nitrogen accumulation in the thin layer vadose zone of cropland around plateau lakes, Southwest China
作者：Chen, Qingfei;Min, Jinheng;Li, Lin;Zhang, Dan;Chen, Qingfei;Chen, Anqiang;Hu, Wanli;Wang, Chi;Fu, Bin;Guo, Shufang
关键词：Shallow groundwater table fluctuation; Soil nitrogen accumulation; Soil nitrogen loss; Soil profile; Cropland
-
Organic substitution accumulates more nitrogen in soil while maintaining unchanged nitrogen use efficiency in rice-fava bean rotation system
作者：Wang, Panlei;Tang, Li;Wang, Panlei;Chen, Anqiang;Sun, Xi;Du, Caiyan;Zhu, Hongye;Pan, Yanhua;Wang, Panlei;Chen, Anqiang;Sun, Xi;Du, Caiyan;Zhu, Hongye;Pan, Yanhua;Wang, Bin;Tang, Li
关键词：drought-flood alternation; N use efficiency; organic substitution management; paddy-upland rotation; soil N pool
-
Nitrogen in soil, manure and sewage has become a major challenge in controlling nitrate pollution in groundwater around plateau lakes, Southwest China
作者：Cui, Rongyang;Liu, Gangcai;Cui, Rongyang;Liu, Gangcai;Cui, Rongyang;Cui, Rongyang;Hu, Wanli;Zhao, Xinmei;Yan, Hui;Chen, Anqiang;Zhang, Dan
关键词：Groundwater; NO3- isotopes; NO3- pollution; N cycling
-
Long-term cattle manure addition enhances soil-available phosphorus fractions in subtropical open-field rotated vegetable systems
作者：Mao, Yanting;Zheng, Yi;Mao, Yanting;Lei, Baokun;Hu, Wei;Li, Yongmei;Li, Yuan;Zheng, Yi
关键词：phosphorus fractions; phosphate use efficiency; manure; vegetable yield; subtropical
-
Returned straw reduces nitrogen runoff loss by influencing nitrification process through modulating soil C:N of different paddy systems
作者：Wang, Shaopeng;Zhai, Limei;Liu, Hongbin;Guo, Shufang;Zhang, Fulin;Hua, Lingling
关键词：Rice; Nitrogen runoff losses; Straw return; Nitrogen cycle bacteria; Soil C:N; Non-point source pollution
