浙江农业科学 ›› 2026, Vol. 67 ›› Issue (2): 288-292.DOI: 10.16178/j.issn.0528-9017.20240486

• 粮食作物 • 上一篇    下一篇

氮肥减量配施有机肥对双季稻产量、氮肥利用率及土壤肥力的影响

麻理亚1(), 胡泽凡1, 张园园2, 叶挺云1, 王峰3, 陈照明3()   

  1. 1.瑞安市农业农村局,浙江 瑞安 325200
    2.浦江县农业农村局,浙江 浦江 322200
    3.浙江省农业科学院 环境资源与土壤肥料研究所,浙江 杭州 310021
  • 收稿日期:2024-06-20 出版日期:2026-02-28 发布日期:2026-03-07
  • 通讯作者: 陈照明,E-mail:zhmchen@aliyun.com
  • 作者简介:麻理亚,研究方向为土壤肥料和病虫害防治。E-mail:1500744805@qq.com
  • 基金资助:
    浙江省“尖兵”“领雁”科技计划项目(2023C02005);浙江省“尖兵”“领雁”科技计划项目(2023C02015);浙江省“尖兵”“领雁”科技计划项目(2023C02020);浦江县第三次土壤普查;浦江县新垦耕地土壤酸化与肥力快速协同提升关键技术研发项目

Effects of nitrogen reduction combined with organic fertilizer application on yield,nitrogen use efficiency and soil fertility in double-cropping rice system

MA Liya1(), HU Zefan1, ZHANG Yuanyuan2, YE Tingyun1, WANG Feng3, CHEN Zhaoming3()   

  1. 1.Rui′an Municipal Bureau of Agriculture and Rural Affairs,Rui′an 325200,Zhejiang
    2.Pujiang Municipal Bureau of Agriculture and Rural Affairs,Pujiang 322200,Zhejiang
    3.Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,Zhejiang
  • Received:2024-06-20 Online:2026-02-28 Published:2026-03-07

摘要:

在浙南地区开展田间试验,研究不同施肥方式对双季稻产量、氮肥利用率及土壤肥力的影响。试验设4个处理:不施氮肥(T1)、常规施氮(T2)、氮肥减量20%(T3)和氮肥减量20%配施有机肥(T4)。结果表明,与T1相比,T2、T3和T4处理早稻增产47.6%~58.5%,晚稻增产46.0%~52.5%。与T2相比,T3处理早稻、晚稻及总产量均无显著差异;T4处理早稻产量显著提高,晚稻及总产量无显著差异。在氮素吸收方面,T3处理与T2处理在早晚稻籽粒、秸秆及总吸氮量上均无显著差异;T4处理较T2处理显著提高了早稻秸秆与总吸氮量、晚稻籽粒与总吸氮量。T3和T4处理的早晚稻氮肥利用率均显著高于T2处理,且T4处理显著高于T3处理。与T2处理相比,T4处理显著提高了土壤pH值、全氮和有效磷含量,土壤碱解氮、有机质和速效钾含量无显著变化。因此,在氮肥减量20%基础上配施有机肥(T4处理)可稳定水稻产量,同时提高氮肥利用率并改善土壤肥力。

关键词: 双季稻, 有机肥替代, 产量, 氮肥利用率, 土壤肥力

Abstract:

A field experiment was conducted in southern Zhejiang to investigate the effects of different fertilization methods on double-cropping rice yield,nitrogen use efficiency,and soil fertility. Four treatments were established:no nitrogen fertilizer (T1),conventional nitrogen application (T2),20% nitrogen reduction (T3),and 20% nitrogen reduction combined with organic fertilizer (T4). Results indicated that compared with T1,treatments T2,T3,and T4 increased early rice yield by 47.6%-58.5% and late rice yield by 46.0%-52.5%. Compared with T2 treatment,T3 treatment showed no significant difference in the yield of early rice,late rice,and total yield,whereas T4 treatment significantly increased early rice yield,with no significant difference in late rice yield or total yield. In terms of nitrogen uptake,no significant difference was observed between T3 and T2 treatments in grain,straw,or total nitrogen uptake for both early and late rice. T4 treatment significantly increased straw and total nitrogen uptake in early rice than those of T2 treatment,as well as grain and total nitrogen uptake in late rice. Nitrogen use efficiency for both early and late rice in T3 and T4 treatments was significantly higher than that in T2 treatment,with T4 treatment being significantly higher than T3 treatment. Compared with T2 treatment,T4 treatment significantly increased soil pH value,total nitrogen,and available phosphorus content,while no significant changes were detected in soil available nitrogen,organic matter,or available potassium content. Therefore,combining 20% nitrogen reduction with organic fertilizer (T4 treatment) can maintain rice yield while improving nitrogen use efficiency and soil fertility.

Key words: double-cropping rice, organic fertilizer substitution, yield, nitrogen use efficiency, soil fertility

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