文献类型： 外文期刊
作者： Wu, Liangquan 1 ; Cui, Zhenling 1 ; Chen, Xinping 1 ; Zhao, Rongfang 2 ; Si, Dongxia 3 ; Sun, Yixiang 4 ; Yue, Shancha 1 ;
作者机构： 1.China Agr Univ, Ctr Resources Environm & Food Secur, Beijing 100193, Peoples R China
2.Zhongkai Univ Agr & Engn, Coll Environm Sci & Engn, Guangzhou 510225, Guangdong, Peoples R China
3.Liaocheng Univ, Coll Agr Sci, Liaocheng 252000, Peoples R China
4.Anhui Acad Agr Sci, Soil & Fertilizer Inst, Hefei 230031, Peoples R China
5.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： Understanding maize (Zea mays L.) grain yield in relation to K uptake requirements is essential for devising optimized K fertilizer management practices and agricultural policies to increase grain yield for food security. A database comprising 953 measurements was created using 56 on-farm and research station experiments during 2000 to 2012 in the North China Plain (NCP) to determine K uptake requirements and patterns of K accumulation pre- and post-silking with different yield levels. The K requirement Mg-1 grain yield (K-req.) in the K = Opt. treatment was 15.0 kg, which was lower than 20.0 kg in the K > Opt. treatment. In the Optimal K treatment, average Kreq. values were 15.0, 14.8, 14.8, and 15.7 kg for grain yields ranging from <8.0, 8 to 10, 10 to 12, and >12.0 Mg ha(-1), respectively. The relative consistency of Kreq. values with increasing grain yield was mainly attributed to an offset in the increase in stover K (from 14.0 to 18.1 g kg(-1)), an increase in harvest index (HI) from 0.49 to 0.54, and the stability of grain K concentrations (about 3.2 g kg(-1)). Higher percentages for K accumulation at the post-silking stage were observed with > 12 Mg ha(-1) (24%) and 10 to 12 Mg ha(-1) (22%) compared to < 10 Mg ha(-1) (9%). In conclusion, maintaining adequate K supply and post-silking K accumulation is essential for achieving high-yield maize production
- 相关文献
作者其他论文 更多>>
-
Productivity of saline soils can be improved by integrating soil-crop system management
作者：Miao, Qi;Wu, Gang;Sun, Yixiang;Wu, Shuaibing;Li, Junchao;Ying, Hao;Cui, Zhenling;Zhang, Jishi;Wang, Yunhong
关键词：Saline soil; Improved soil; Crop management; Spring maize; Soil-crop interaction
-
Coupling phosphorus rate and type enhances maize yield by regulating salt ion homeostasis in coastal saline soil-crop systems
作者：Wu, Shuaibing;Tian, Xingshuai;Ying, Hao;Cui, Zhenling;Yu, Botao;Zhang, Jishi;Zheng, Huifang;Miao, Qi
关键词：Coastal saline soil; Maize; Optimal phosphate rate; Phosphate fertilizer type; Salt ion homeostasis
-
Environmental trade-offs and productivity gains through sustainable nitrogen use in an intensive high-input sugarcane production system in China
作者：Yang, Linsheng;Yang, Linsheng;Zhou, Yifang;Meng, Bo;Wang, Huayang;Lakshmanan, Prakash;Deng, Yan;Chen, Xinping;Zhou, Yifang;Liu, Xiaoyan;Lakshmanan, Prakash;Luo, Ting;Lakshmanan, Prakash;Zhang, Fusuo
关键词：Sugarcane; Nitrogen management; Yield; Reactive nitrogen loss
-
Chitosan gels in the nutrient controlled release: a review
作者：Liu, Haofu;Cai, Tingyao;Miao, Qi;Cui, Zhenling;Gao, Zideng;Zhang, Yunfei;Miao, Qi
关键词：Chitosan gels; nutrient controlled release; slow controlled fertilizers; environmental friendliness; sustainable agriculture; biosafety
-
Blended controlled-release nitrogen fertilizer increases rice post-anthesis nitrogen accumulation, translocation and nitrogen-use efficiency
作者：Yuan, Manman;Wu, Gang;Wang, Jiabao;Liu, Chuang;Zhang, Xiangming;Wang, Wenjun;Sun, Yixiang;Hu, Yegong;Hu, Run;Zhou, Yan
关键词：economic return; yield; nitrogen translocation; post-anthesis nitrogen uptake; urea N type
-
Environmental impact and mitigation potentials in Greenhouse tomatoes production system in Yangtze River Delta
作者：Wu, Gang;Yuan, Manman;Wang, Jiabao;Sun, Yixiang;Zhao, Mingjiong;Wang, Xingbang;Chen, Xinping;Wang, Xiaozhong;Liu, Bin
关键词：Environmental impact; Mitigation potentials; Yield; Greenhouse tomatoes; Yangtze River Delta
-
Lightweight pH-responsive chitosan hydrogel iron fertilizer: Efficient performance, controlled-release, and tomato application
作者：Liu, Haofu;Huang, Zhiqing;Shi, Yingyu;Cai, Tingyao;Miao, Qi;Cui, Zhenling;Liu, Haofu;Huang, Zhiqing;Shi, Yingyu;Cai, Tingyao;Miao, Qi;Cui, Zhenling;Liu, Haofu;Huang, Zhiqing;Shi, Yingyu;Cai, Tingyao;Miao, Qi;Cui, Zhenling;Liu, Haofu;Huang, Zhiqing;Shi, Yingyu;Cai, Tingyao;Miao, Qi;Cui, Zhenling;Gao, Zideng;Miao, Qi
关键词：Chitosan hydrogel; Iron fertilizer; pH-responsive; Stimuli controlled fertilizer; Iron release
