Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (3): 417-427.DOI: 10.3969/j.issn.1004-1524.20250301

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Phosphorus uptake and utilization characteristics of conventional japonica rice on major paddy soils in northern Zhejiang of China

WU Yong1(), XU Zaimeng2, LU Chenni2, ZHU Yuxiang1, ZHU Riqing3, SUN Da4, SHI Yanping5, CHEN Gui2,*()   

  1. 1. Tongxiang Institute of Agricultural Sciences, Jiaxing Academy of Agricultural Sciences, Tongxiang 314024, Zhejiang, China
    2. Jiaxing Academy of Agricultural Sciences, Jiaxing 314016, Zhejiang, China
    3. Agricultural Technology Extension Station of Xiuzhou District, Jiaxing City, Jiaxing 314001, Zhejiang, China
    4. Agricultural and Fishery Technology Extension Station of Nanhu District, Jiaxing City, Jiaxing 314051, Zhejiang, China
    5. Soil, Fertilizer, Plant Protection and Rural Energy Station of Jiaxing City, Jiaxing 314050, Zhejiang, China
  • Received:2025-04-14 Online:2026-03-25 Published:2026-04-17
  • Contact: CHEN Gui

Abstract:

This study investigated the interactive effects of paddy soil types and rice varieties on rice yield and phosphorus (P) uptake/utilization characteristics, as well as the key factors influencing these parameters, using four main paddy soil types in northern Zhejiang (blue-purple paddy soil, yellow-mottled paddy soil, powdery paddy soil, and bluish silty-clay paddy soil) and five major conventional japonica rice varieties (Zhejing99, Xiushui14, Xiushui121, Jia67, and Zhehexiang No. 2) as research materials. The results showed that: (1) Significant (p<0.05) differences were observed in yield, aboveground dry matter accumulation at maturity (DA-M), aboveground P accumulation at tillering stage (PA-T), aboveground P accumulation at heading stage (PA-H), aboveground P accumulation at maturity (PA-M), P uptake efficiency (PupE), P physiological use efficiency for biomass (PE-bio), P physiological use efficiency for grains (PE-grain), P translocation amount from leaves (PtrA-L), P translocation amount from stem (PtrA-S), P translocation efficiency from leaves (PtrE-L), and P translocation efficiency from stem (PtrE-S) among rice varieties across different paddy soil types. (2) Rice yield and PupE were significantly affected by both variety and paddy soil type. PE-bio and PE-grain were only significantly influenced by variety. PtrA-L, PtrA-S, and PtrE-S were significantly affected by variety, paddy soil type, and their interaction. PtrE-L was significantly influenced by paddy soil type and its interaction with variety. (3) PupE was positively correlated with yield, DA-M and PA-M at p<0.01 level. PE-bio was positively correlated with PtrE-S at p<0.05 level. PE-grain was positively correlated with PtrE-S at p<0.01 level. In conclusion, selecting rice varieties based on local soil conditions is essential to improve rice yield and P uptake/utilization efficiency.

Key words: conventional japonica rice, paddy soil, phosphorus uptake efficiency, phsphorus physiological use efficiency, phosphorus translocation efficiency

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