您的位置: 专家智库 > 资助详情>国家科技支撑计划(2008BADA4807)

国家科技支撑计划(2008BADA4807)

作品数:1 被引量:0H指数:0
相关作者:王宜伦谭金芳韩燕来司贤宗刘蒙蒙更多>>
相关机构:河南农业大学更多>>
发文基金:中国-国际植物营养研究所(IPNI)合作项目国家粮食丰产科技工程国家科技支撑计划更多>>
相关领域:农业科学更多>>

文献类型

  • 1篇中文期刊文章

领域

  • 1篇农业科学

主题

  • 1篇NITROG...
  • 1篇EFFECT...
  • 1篇GRAIN_...
  • 1篇YIELD
  • 1篇CONTIN...
  • 1篇CONTIN...

机构

  • 1篇河南农业大学

作者

  • 1篇刘蒙蒙
  • 1篇司贤宗
  • 1篇韩燕来
  • 1篇谭金芳
  • 1篇王宜伦

传媒

  • 1篇Agricu...

年份

  • 1篇2013
1 条 记 录,以下是 1-1
排序方式:
Effects of Continuous Nitrogen Application on Grain Yield and Nitrogen Uptake and Utilization in Winter Wheat-Summer Maize Rotation System
2013年
[Objective] This study aimed to achieve high yield and stable yield of win- ter wheat-summer maize rotation system and provide basis for rational application of nitrogen fertilizer. [Method] Effects of continuous nitrogen application on grain yield, economic profit, nitrogen uptake and utilization efficiency, and soil inorganic nitrogen accumulation in winter wheat-summer maize rotation system were investigated. [Re- sult] Nitrogen application could significantly increase the y(eld of the winter wheat- summer maize rotation system, which increased by 17.76%-30.32% and 22.24%- 46.63% in two rotation cycles, respectively. The yield of the winter wheat-summer maize rotation system was the maximum in two rotation cycles with nitrogen appli- cation amount of 660.0 kg/hm2, which reached respectively 23 391.19 and 23 444.35 kg/hm2, the yield and economic benefit were the highest, the nitrogen fertilizer use efficiency was 22.2% and 30.7%, the agronomic efficiency was 8.3 and 11.3 kg/kg. However, the nitrogen fertilizer use efficiency and agronomic efficiency between ni- trogen application amount of 540.0 and 660.0 kg/hm2 showed no significant differ- ence. After two rotation cycles, inorganic nitrogen accumulation in 0-40 cm soil with nitrogen application amount of 540.0 kg/hm2 was almost equal to that before experi- ment. [Conclusion] Under the experimental conditions, comprehensively considering the grain yield, economic profit, nitrogen fertilizer efficiency and soil inorganic nitro- gen balance, the optimal nitrogen application amount was 625.3-660.0 kg/hm2 in high-yield winter wheat-summer maize rotation system.
司贤宗王宜伦韩燕来刘蒙蒙谭金芳
关键词:YIELD
共1页<1>
聚类工具0