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

Irrigation Intensities Drive Soil N2O Emission Reduction in Drip-Irrigated Cotton Fields

文献类型： 外文期刊

作者： Ma, Honghong 1 ; Wu, Qi 3 ; Wu, Xianglin 1 ; Zhu, Qianqian 1 ; Pu, Shenghai 1 ; Ma, Xinwang 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Agr Resources & Environm, Urumqi 830091, Peoples R China

2.Minist Agr, Key Lab Northwest Oasis Agr Environm, Urumqi 830091, Peoples R China

3.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China

关键词： cotton field; drip irrigation; irrigation intensity; microorganisms; influencing factors; N2O emission

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 7 期

页码：

收录情况： SCI

摘要： Drip irrigation with plastic mulch is widely used to save water and improve fertilizer efficiency in arid regions in Xinjiang. However, farmers freely use irrigation water in pursuit of a high cotton yield, and the impact of different irrigation amounts on nitrous oxide (N2O) emissions is still unclear. A field experiment was conducted in 2023 in Xinjiang, China, with drip-irrigated cotton (Gossypium hirsutum L.) to determine N2O emissions with different irrigation intensities. The different irrigation treatments were designed as follows: irrigation was performed to maintain soil moisture at (1) an 80% field capacity (Q80); (2) 90% field capacity (Q90); and (3) 100% field capacity (Q100). The results showed that the yield of cotton decreased with the increase in irrigation intensity. A 100% field capacity is beneficial for ammonium and nitrate transformation. The N2O emissions remained at a relatively low level during the non-irrigated fertilization period. In every irrigation and fertilization cycle, the N2O emissions were mainly concentrated during the process from wet to dry. The peak occurred during days 1-3 of irrigation. Throughout the growth period, the cumulative N2O emissions were 1.15, 1.48, and 2.63 kg N ha(-1) under the Q80, Q90, and Q100 treatments, respectively. As the irrigation intensity increased, the dominant species of soil bacteria and fungi showed substitution, while the dominant species of soil actinomycetes were not replaced. Fungi, actinomycetes, the available potassium, and the carbon to nitrogen ratio were positively correlated with nitrous oxide emissions, and the soil temperature was negatively correlated with nitrous oxide emissions. These results demonstrate that increased irrigation could increase the risk of greenhouse gas emissions when using plastic mulch with drip irrigation.

  • 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