数字农科院2.0

Sources, fate and influencing factors of nitrate in farmland drainage ditches of the irrigation area

文献类型： 外文期刊

作者： Tianpeng Zhang;Qiyu Xu;Xiaotong Liu;Qiuliang Lei;Jiafa Luo;Miaoying An;Xinzhong Du;Weiwen Qiu;Xuejun Zhang;Fengzhi Wang;Hongbin Liu

作者机构：

关键词： Irrigated areas;Nitrate tracing;Nitrogen and oxygen isotopes;Seasons

期刊名称： Journal of Environmental Management

ISSN： 0301-4797

年卷期： 2024 年 367 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Global irrigation areas face the contradictory challenges of controlling nitrate inputs and ensuring food-safe production. To prevent and control nitrate pollution in irrigation areas, the study using the Yellow River basin (Ningxia section) of China as a case study, employed nitrogen and oxygen dual isotope tracing and extensive field investigations to analyze the sources, fate, and influencing factors of nitrate in agricultural drainage ditches. The results of source tracing of nitrate showed that annual proportions of nitrate sources entering the Yellow River in the ditches are as follows: for manure & sewage, fertilizer, and natural sources, the ratios are 33%, 35%, and 32% overall. The results of nitrate fate showed that nitrates derived from nitrate fertilizer exhibit a lower residual rate in drainage ditches (ecological ditches) compared to ammonium fertilizer, which can undergo self-ecological restoration within one year. The results of influencing factors showed that crops with high water and nutrient requirements, such as vegetables, the nitrate pollution and environmental harm resulting from “exploitative cultivation” are five times more than normal cultivation practices in dryland and paddy fields, especially winter irrigation without crop interception exacerbates the leaching of nitrate from the soil. Therefore, nitrate management in irrigation areas should focus on preventing and controlling “exploitative cultivation” and losses during winter irrigation, while appropriately adjusting the application ratio of ammonium nitrogen fertilizers. The results of the study can guide strategies to mitigate nitrate pollution in irrigated areas such as livestock farming, fertilizer application, irrigation management, ditch optimization, and crop cultivation.

分类号：

  • 相关文献

[1]Nitrogen and Gray Water Footprints of Various Cropping Systems in Irrigation Districts: A Case from Ningxia, China. Liu, Huan,Liu, Xiaotong,Zhang, Tianpeng,Du, Xinzhong,Zhao, Ying,Luo, Jiafa,Qiu, Weiwen,Wu, Shuxia,Liu, Hongbin. 2025

[2]Nitrogen inputs, fate, and associated health risks in an intensive agricultural district: The role of irrigation-induced nitrogen. Xinyue Kou,Lili Mao,Junjun Ding,Shan Zhuang,Qian Zheng,Qiaozhen Li,Chunying Xu,Daozhi Gong,Yuzhong Li. 2025

[3]Hybrid Genetic Algorithm−Based BP Neural Network Models Optimize Estimation Performance of Reference Crop Evapotranspiration in China. Qin A.,Fan Z.,Zhang L.. 2022

[4]Effect of Different Synchronization Regimens on Reproductive Variables of Crossbred (Swamp × Riverine) Nulliparous and Multiparous Buffaloes during Peak and Low Breeding Seasons. Adili Abulaiti,Zahid Naseer,Zulfiqar Ahmed,Dong Wang,Guohua Hua,Liguo Yang. 2022

[5]Characterization and evaluation of the morphological attributes of Ethiopian mustard (Brassica carinata A. Braun) landraces. Rahiel Hagos Abraha,Abdulwahab S. Shaibu,Jianli Liang,Jian Wu,Runmao Lin,Xiaowu Wang. 2024

作者其他论文 更多>>