您好，欢迎访问甘肃省农业科学院 机构知识库！
甘肃省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Enhancing Maize Yield and Resource Efficiency through Controlled-Release Nitrogen Fertilization on the Semiarid Loess Plateau

文献类型： 外文期刊

作者： Zhang, Jianjun 1 ; Zhao, Gang 1 ; Dang, Yi 1 ; Fan, Tinglu 1 ; Wang, Lei 1 ; Li, Shangzhong 1 ; Zhou, Gang 1 ; Fudjoe, Setor Kwami 3 ; Wang, Linlin 3 ; Palta, Jairo A. 5 ;

作者机构： 1.Gansu Acad Agr Sci, Dryland Farming Inst, Lanzhou 730070, Peoples R China

2.Key Lab High Water Utilizat Dryland Gansu Prov, Lanzhou 730070, Peoples R China

3.Gansu Agr Univ, Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China

4.Gansu Agr Univ, Coll Agron, Lanzhou 730070, Peoples R China

5.Univ Western Australia, UWA Inst Agr, Sch Agr & Environm, Perth, WA 6001, Australia

6.CSIRO Agr & Food, Private Bag 5, Perth, WA 6913, Australia

关键词： controlled-release urea; maize; soil enzyme activity; grain yield; water use efficiency

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 9 期

页码：

收录情况： SCI

摘要： Drought stress is one of the premier limitations to global agricultural production. Increasing water and nitrogen (N) use efficiencies in dryland agroecosystems to maintain high agricultural output are key responsibilities to assure food security, especially on the semiarid Loess Plateau region of China, as it is one of the important grain production areas in China. The impact of controlled-release urea (CRU) on the soil water content, soil enzyme activities, soil N content, biomass accumulation, grain yield, water use efficiency (WUE), and agronomic use efficiency of N fertilizer (AEN) were examined on the maize production of the rainfed Loess Plateau during 2020-2021. Two-growing-season field treatments at the Zhengyuan Agri-ecological Station, Qingyang, Gansu, including six N treatments, were investigated for maize: a control without N fertilization (CK) and five application proportions of CRU (i.e., 0, 30, 50, 70, and 100%CRU) under a N rate of 225 kg ha-1. Results showed that compared with common urea (0%CRU), on average, CRU applications significantly increased soil enzyme activity related to N conversion and improved biomass accumulation by 4-11% at the silking stage and by 2-12% at the maturity stage, respectively. As the proportion of CRU increased, the grain no. per ear, 100-grain weight, and harvest index first increased and then decreased. Grain yield was increased by 5.3, 11.4, 20.1, and 5.7% under 30, 50, 70 and 100%CRU, respectively, compared to common urea. Compared to common urea, 70%CRU combined with 30% common urea achieved the highest yield. These results indicate that optimal controlled-release N fertilization increases the yield and water and nitrogen use efficiencies of maize, and 70%CRU combined with 30% common urea under a single application of nitrogen fertilizer at sowing was the optimal application proportion of controlled-release urea for increasing water and nitrogen use efficiencies in dryland agroecosystems. The results of this study can provide a theoretical basis for the efficient fertilization of maize on the semiarid Loess Plateau of China.

  • 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：甘肃省农业科学院

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