Single-time fertilization with controlled release blended fertilizer optimizes soil nitrogen distribution and root characteristics to increase conventional japonica rice (Oryza sativa L.) grain yield and nitrogen use efficiency

作者：Yuhui Wang, Jie Sun, Shen Gao, Bin He, Zhengyang Wu, Wenjun He, Weike Tao, Xin’ao Tang, Zhi Geng, Weiwei Li, Fei Yang, Zhengrong Jiang, Zhenghui Liu, Yanfeng Ding, Soulaïman Sakr, Ganghua Li · 发表于：Journal of Integrative Agriculture · 年份：2025 · DOI：10.1016/j.jia.2025.02.034 · 被引用次数：6 · 研究领域：Rice Cultivation and Yield Improvement、Plant nutrient uptake and metabolism、Crop Yield and Soil Fertility

• Single-time fertilization of CRBF optimized soil N distribution and maintained the soil NH 4 + -N concentration to synchronize rice N requirement. • Single-time fertilization of CRBF improved root biomass and shaping root morphology. • Single-time fertilization of CRBF increased rice grain yield and NUE by increasing plant N uptake, shaping root morphology and increasing soil inorganic N. Single-time fertilization (STF) of controlled release blended fertilizer (CRBF) improves grain yield and nitrogen use efficiency (NUE) in rice production. However, the impact of soil nitrogen (N) distribution and root growth on rice yield and NUE under STF of CRBF remains unclear. This two-year field experiment investigated the effects of fertilizer types (normal urea (U) and CRBF) and single-time fertilization methods (broadcast and side-deep fertilization) on the soil N distribution, plant N uptake, root characteristics, grain yield and NUE. The results showed that CRBF under STF averaged increased plant dry matter accumulation, N uptake, grain yield, nitrogen recovery efficiency (NRE), and nitrogen agronomic efficiency (NAE) by 8.29, 21.85, 10.57, 79.28, and 74.8% compared to the other treatments, respectively. Side-deep fertilization of CRBF further increased NUE by 12.78% compared to broadcast. Moreover, CRBF under STF increased leaf SPAD value and glutamine synthetase (GS) /glutamine oxoglutarate aminotransferase (GOGAT) activity by 5.93 and 25.58%. CRBF under STF increased the soil ...