The coupled effects of various irrigation schedules and split nitrogen fertilization modes on post-anthesis grain weight variation, yield, and grain quality of drip-irrigated winter wheat (Triticum aestivum L.) in the North China Plain

文献类型： 外文期刊

第一作者： Hamani, Abdoul Kader Mounkaila

作者： Hamani, Abdoul Kader Mounkaila;Ju, Xiaotang;Hamani, Abdoul Kader Mounkaila;Kpalari, Djifa Fidele;Wang, Guangshuai;Duan, Aiwang;Gao, Yang;Abubakar, Sunusi Amin;Fu, Yuanyuan

作者机构：

关键词： winter wheat; drip fertigation; split N application; post-anthesis grain weight variation; grain quality

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN： 2095-3119

年卷期： 2025 年 24 卷 6 期

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收录情况： SCI

摘要： Irrigation methods and nitrogen (N) fertilization modes have complicated impacts on wheat physiology, growth, and development, leading to the regulation of wheat grain yield and quality. However, the optimal water-N combination for drip-irrigated winter wheat remains unclear. A two-year field study was conducted to evaluate the influences of various N-fertigation and water regimes on wheat post-anthesis grain weight variation, yield, grain NPK content, and grain quality. The two irrigation quotas were I-45 (irrigation when crop evapotranspiration reduced by effective rainfall (ETa-P) reaches 45 mm) and I-30 (irrigation when ETa-P reaches 30 mm), while the six N application rates were N0-100 (100% at jointing/booting), N25-75 (25% at sowing and 75% at jointing/booting), N50-50 (50% at sowing and 50% at jointing/booting), N75-25 (75% at sowing and 25% at jointing/booting), N100-0 (100% at sowing), and SRF100 (100% of slow-release fertilizer at sowing). The experimental findings showed that post-anthesis grain weight variation, grain yield, grain NPK content, and grain quality were all markedly influenced by the various irrigation schedules and N-fertilization modes. The N50-50 treatment was more beneficial for winter wheat post-anthesis grain weight variation than the N100-0 and N0-100 treatments under the two irrigation quotas and during the two seasons. The highest grain yields of 9.72 and 9.94 (t ha(-1)) were obtained with the I45N50-50 treatment in 2020-2021 and 2021-2022, respectively. The grain crude protein was higher in the I45SRF100 treatment during the two seasons. The I45N100-0 combination significantly (P<0.05) enhanced the content of grain total starch by 7.30 and 8.23% compared with the I45N0-100 and I30N0-100 treatments, respectively, during the 2021-2021 season. The I45N100-0 treatment significantly (P<0.05) enhanced the content of grain total starch concentration by 7.77, 7.62 and 7.88% compared with the I45N0-100, I30N0-100, and I30N25-75 treatments, respectively, in the 2021-2022 season. The principal component analysis (PCA) indicated that the N50-50 split N-fertigation mode could be the optimal choice for farmers during winter wheat production via drip irrigation.

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