您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Deep fertilization with controlled-release fertilizer for higher cereal yield and N utilization in paddies: The optimal fertilization depth

文献类型： 外文期刊

作者： Hou, Pengfu 1 ; Yuan, Wensheng 4 ; Li, Ganghua 2 ; Petropoulos, Evangelos 5 ; Xue, Lixiang 1 ; Feng, Yanfang 1 ; Xue, 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Key Lab Agroenvironm Downstream Yangze Plain, Minist Agr & Rural Affairs China, Nanjing 210014, Peoples R China

2.Nanjing Agr Univ, Nanjing 210095, Peoples R China

3.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212001, Jiangsu, Peoples R China

4.Minist Agr & Rural Affairs China, Nanjing Inst Agr Mechanizat, Nanjing 210014, Peoples R China

5.Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）

ISSN： 0002-1962

年卷期：

页码：

收录情况： SCI

摘要： Belowground fertilization is a prevalent strategy for considerable grain yield and N utilization. However, the optimal fertilization depth remains uncertain in paddies, especially for slow/controlled release fertilizers. This study aimed to clarify the effect of deep "controlled-release blended fertilizer" (CRBF) fertilization on rice (Oryza sativa L.) yield and N utilization. Two N-fertilizer types were selected (a) urea and (b) CRBF, both combined at three fertilization depths (a) 0 cm, (b) 5 cm, and (c) 10 cm. The results showed that the grain yield was significantly affected by fertilizer type and fertilization depth. The yield achieved from CRBF was 7.8% higher than that from the urea application. Deep fertilization could also increase the rice yield with the optimum achieved from the 5-cm depth fertilization (yield increased by 15.1% compared to that from the manual surface fertilization). Overall, the 5-cm depth CRBF fertilization achieved the highest yield among all treatments with 12.21 and 11.84 t ha(-1) for 2018 and 2019, respectively. The larger sink was the main reason for this performance. Additionally, the higher photosynthetic efficient population after earing was another principal driver to the higher yield from CRBF. Due to the higher N uptake, CRBF application increased both N partial factor productivity (PFP) and recovery efficiency (RE) (P < .05); fertilization depth also had a striking effect on PFP and RE (P < .05 or .01). The 5-cm depth fertilization of CRBF achieved the highest N utilization for both years. The results suggest that 5-cm depth fertilization combined with controlled-release fertilizer is a suitable strategy for higher rice yield and N utilization.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台