中国水稻科学2025，Vol.39Issue(3)：399-411,13.DOI:10.16819/j.1001-7216.2025.240512
磷肥施用量对湖北省直播水稻产量、磷素积累及利用率的影响
Effects of Phosphorus Fertilizer Application Rate on Grain Yield,Phosphorus Accumulation and Utilization of Direct-seeded Rice in Hubei Province
摘要
Abstract
[Objective]This study aims to clarify the effect of phosphorus fertilizer dosage on grain yield,phosphorus accumulation,phosphorus fertilizer utilization,and economic benefits of direct-seeded rice in Hubei Province.It provides a theoretical basis for the scientific fertilization of direct-seeded rice in the region.[Methods]Four phosphorus fertilizer application rates(0,45,90,and 135 kg/hm2)were established in a multi-site experiment across counties(cities and districts)in the major rice-producing areas of Hubei Province.The grain yield,phosphorus content,phosphorus accumulation,phosphorus fertilizer utilization,and economic benefits of rice under different phosphorus fertilizer dosages were comparatively analyzed.[Results]Compared to the zero phosphorus treatment(0 kg/hm2),the phosphorus fertilizer dosages of 45,90,and 135 kg/hm2 at each experimental site increased the grain yield by 0.18-1.80 t/hm2,0.30-3.24 t/hm2,and 0.60-2.61 t/hm2,respectively,with average increases of 9.15％,16.08％,and 18.24％.Additionally,the aboveground phosphorus accumulation of rice increased by 1.57-9.18 kg/hm2,2.67-12.77 kg/hm2,and 4.16-15.06 kg/hm2,with average increases of 29.14％,44.92％,and 53.60％,respectively.Overall,rice yield increased with the phosphorus fertilizer dosage in the range of 0-90 kg/hm2,and there was no significant difference in rice yield when the phosphorus fertilizer dosage exceeded 90 kg/hm2.With the increase in phosphorus fertilizer dosage,rice phosphorus accumulation,production value,and net income followed a trend of increasing and then stabilizing,while partial productivity of phosphate fertilizer,agronomic utilization rate,recycling rate,and production-to-input ratio decreased with higher phosphorus fertilizer dosages.An interaction was observed between phosphorus fertilizer dosage and experimental location regarding yield,phosphorus accumulation,phosphorus fertilizer utilization,production value,and net income of direct-seeded rice.[Conclusion]Appropriate phosphorus fertilizer dosage can significantly improve the grain yield,aboveground phosphorus accumulation,and phosphorus fertilizer utilization of direct-seeded rice.Considering yield,phosphorus accumulation,fertilizer utilization,and economic benefits,the recommended dosage of phosphorus fertilizer for direct-seeded rice in Hubei Province is 58-104 kg/hm2,with an average of 82 kg/hm2.The theoretical maximum yield can reach 6.97-12.18 t/hm2,with an average of 9.14 t/hm2,which can ensure rice yield while minimizing nutrient loss and reducing environmental pollution.关键词
直播水稻/磷肥用量/产量/磷素积累/肥料利用率/经济效益Key words
direct-seeded rice/phosphorus fertilizer dosage/yield/phosphorus accumulation/fertilizer utilization/economic benefits引用本文复制引用
沈智达,余秋华,张斌,曹玉东,王少华,王红飞,伍永清,戴志刚,李小坤..磷肥施用量对湖北省直播水稻产量、磷素积累及利用率的影响[J].中国水稻科学,2025,39(3):399-411,13.基金项目
湖北省现代农业水稻产业技术体系项目(2023HBSTX4-01) （2023HBSTX4-01）
湖北洪山实验室重大项目(2121hsz002) （2121hsz002）
湖北省重点研发计划资助项目(2022BBA0048). （2022BBA0048）
