Alternate partial root-zone irrigation combined with nitrogen fertilizer: An adaptive surge root irrigation and nitrogen strategy to improve apple yield, water-nitrogen use efficiency and fruit quality

作者：Kun Hao, Wei Zhang, Shijiang Zhu, Youliang Peng, Yun Zhong, Feilong Jie, Lihua Liu, Yalin Gao, Lin Zhou, Chuang Liu, Fangyuan Shen · 发表于：Agricultural Water Management · 年份：2025 · DOI：10.1016/j.agwat.2025.109296 · 被引用次数：9 · 研究领域：Irrigation Practices and Water Management、Plant Physiology and Cultivation Studies、Growth and nutrition in plants

A reasonable combination of water and nitrogen application under appropriate and use of water-saving irrigation techniques is essential for improving the apple quality and yield in the mountainous areas of the Loess Plateau. This study, which was conducted from 2019 to 2020, utilized seven-year-old Hanfu apples as experimental material. Its focus was on three factors: irrigation method , irrigation level, and nitrogen application level. An L 9 (3 4 ) orthogonal design comprised of nine treatments was employed. The three irrigation methods were unilateral fixed surge root irrigation (U), alternating surge root irrigation (A), and bilateral fixed surge root irrigation (B). The irrigation levels were 85 %–100 % θ f (I 1 ), 70 %–85 % θ f (I 2 ), and 55 %–70 % θ f (I 3 ). The nitrogen application levels were 600 kg N ha −1 (N 1 ), 400 kg N ha −1 (N 2 ), and 200 kg N ha −1 (N 3 ). In the study, soil water and nitrogen distribution, yield, fruit quality, water and nitrogen utilization efficiency, physiological and reproductive indicators and economic benefit of apples under various surge root irrigation treatments were analyzed, and their responses to water and nitrogen management were explored. Principal component was used to assess assessed apple quality and the game theory-based combinatorial weighting method (TOPSIS) was used to provide comprehensive evaluation of apple yield, quality, and water-nitrogen utilization efficiency. The results showed apple yield, quality, water and ...