中国农业科学 ›› 2026, Vol. 59 ›› Issue (1): 57-77.doi: 10.3864/j.issn.0578-1752.2026.01.005

• 耕作栽培·生理生化·农业信息技术 • 上一篇    下一篇

硫包衣缓释肥提升水稻产量及氮肥利用率的技术途径

董桂春1,*(), 王子涵1, 王树深1,2, 李杰3, 霍晓晴1, 杨瑞1, 周娟1, 舒小伟1,4, 李妍3, 曹靓婧3, 王子瑞3, 姚友礼1, 黄建晔1   

  1. 1 扬州大学农学院/江苏省作物遗传生理重点实验室培育点/江苏省粮食作物现代产业技术协同创新中心/教育部植物功能基因组重点实验室,江苏扬州 225009
    2 上海光明长江现代农业有限公司,上海 202178
    3 常州市农业综合技术推广中心,江苏常州 213002
    4 徐州生物工程职业技术学院,江苏徐州 221006
  • 收稿日期:2025-05-05 接受日期:2025-11-14 出版日期:2026-01-07 发布日期:2026-01-07
  • 通信作者:
    董桂春,E-mail:
  • 基金资助:
    国家重点研发计划(2024YFD2300301-01); 国家自然科学基金(32172102); 江苏省农业重大技术协同推广计划(2023-ZYXT-03-2); 常州市水稻产业技术集成创新中心项目(CAIC(2023)005)

Technical Approaches for Enhancing Rice Yield and Nitrogen Use Efficiency with Sulfur-Coated Controlled-Release Fertilizers

DONG GuiChun1,*(), WANG ZiHan1, WANG ShuShen1,2, LI Jie3, HUO XiaoQing1, YANG Rui1, ZHOU Juan1, SHU XiaoWei1,4, LI Yan3, CAO LiangJing3, WANG ZiRui3, YAO YouLi1, HUANG JianYe1   

  1. 1 Agricultural College of Yangzhou University/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Key Laboratory of Plant Functional Genomics, Ministry of Education, Yangzhou 225009, Jiangsu
    2 Shanghai GuangMing Yangtze Modern Agriculture Co., Shanghai 202178
    3 Changzhou Comprehensive Agricultural Technology Extension Center, Changzhou 213002, Jiangsu
    4 Xuzhou Vocational College of Bioengineering, Xuzhou 221006, Jiangsu
  • Received:2025-05-05 Accepted:2025-11-14 Published:2026-01-07 Online:2026-01-07

摘要:

【目的】探究硫包衣缓释肥中缓释氮4个不同释放周期的产品的施用方法,厘清缓释氮产品是单一施用还是组合施用、是否要与速效氮配施、如何优化配施的问题,旨在实现水稻产量和氮肥利用率的协同提高。【方法】于2022—2024年在江苏扬州和常州,以南粳9108与南粳46为供试材料,设计缓释氮产品比较、产品组合筛选、肥料品种比较、缓速掺混配比、速效肥不同施用时期、缓释氮组合配方优选等试验,研究硫包衣缓释肥施用方法对水稻产量形成和氮素吸收利用的影响。【结果】(1)秸秆还田处理的水稻产量较半量还田、不还田处理分别显著提高4.50%、8.88%,氮肥利用率较其他两处理分别提高11.35%、25.64%。(2)缓释氮60 d产品的产量比30、90、120 d产品分别高4.10%、15.68%、19.09%,但低于常规精确定量4.13%;60 d产品氮肥利用率总体而言大于其他缓释氮产品,平均高8.68%;秸秆不还田、半量还田处理略高于常规精确定量处理9.88%、0.93%,全量还田处理低于常规精确定量处理4.57%。(3)缓释氮产品以“3+6+9”组合的产量、氮肥利用率最高,但均低于常规精确定量。(4)缓速掺混配比7﹕3处理的水稻产量、氮素积累量、氮肥利用率均最高,比常规精确定量处理平均分别高4.31%、3.25%、6.15%;在此处理下,速效肥作分蘖肥(生育期中等的品种)或作促花肥(生育期较长的品种),产量、氮素积累量、氮肥利用率均协同提高。产量提高主要是由于在水稻穗数足够的基础上每穗粒数显著增加。(5)缓释氮产品按30 d﹕60 d﹕90 d=1﹕4﹕1掺混时,水稻的产量、氮素积累量、氮肥利用率均为最高,较常规精确定量处理分别增加3.76%、5.66%、13.35%,这与其叶面积系数、库容量、生物产量均显著提高有密切的关系。【结论】缓释氮按30 d﹕60 d﹕90 d=1﹕4﹕1比例混合,缓释氮与速效氮以7﹕3配施,缓释肥一次性基施,速效肥作分蘖肥(生育期150 d左右的品种)或促花肥(生育期160 d以上的品种)一次性施用,产量、氮肥利用率较常规精确定量处理分别增加3.76%、13.35%,是硫包衣缓释肥实现水稻产量和氮肥利用率协同提高比较优化的施用方法。

关键词: 水稻, 缓释氮产品比较与组合筛选, 缓释肥优化施用, 产量, 氮素吸收利用

Abstract:

【Objective】Sulfur-coated slow-release fertilizers comprise four nitrogen (N) products with distinct release periods. This study aimed to determine whether these products should be applied individually or in combination, whether they should be blended with quick-release N fertilizers, and how to optimize their application to synergistically improve rice yield and nitrogen use efficiency (NUE). 【Method】 The field experiments were conducted in Yangzhou and Changzhou, Jiangsu Province from 2022 to 2024, using rice cultivars Nanjing 9108 and Nanjing 46 as test materials. The trials included comparisons of slow-release N products, screening of optimal product combinations, evaluations of fertilizer types, blending ratios of slow- and quick-release N fertilizers, and application timing of quick-release N, and optimization of slow-release N formulations. The effects of sulfur-coated slow-release fertilizer application methods on rice yield formation and nitrogen uptake and utilization were analyzed。【Result】(1) The rice yield under the straw return treatment increased by 4.50% and 8.88% compared with the half-straw return and no-straw return treatments, respectively. Additionally, the nitrogen use efficiency (NUE) under the straw return treatment was 11.35% and 25.64% higher than that under the other two treatments, respectively. (2) The rice yield of the 60-day slow-release nitrogen product was 4.10%, 15.68%, and 19.09% higher than that of the 30-day, 90-day, and 120-day products, respectively, but 4.13% lower than that of the conventional precise fertilization. Overall, the NUE of the 60-day product exceeded that of other slow-release nitrogen products by an average of 8.68%. Under no-straw return and half-straw return conditions, the NUE was 9.88% and 0.93% higher than that under conventional precise fertilization, respectively; however, under full straw return, it was 4.57% lower. (3) The combination of slow-release nitrogen products in the ratio of 3+6+9 achieved the highest rice yield and NUE, yet both were lower than those of the conventional precise fertilization. (4) The treatment with a blending ratio of 7:3 (slow- to quick-release nitrogen) achieved the highest rice yield, nitrogen accumulation, and NUE, averaging 4.31%, 3.25%, and 6.15% higher than that under conventional precise fertilization, respectively. Under this treatment, applying quick-release fertilizer as tillering fertilizer (for medium-duration varieties) or panicle initiation fertilizer (for long-duration varieties) synergistically improved yield, nitrogen accumulation, and NUE. The yield increase was primarily attributed to a significant enhancement in spikelets per panicle on the basis of adequate panicle number. (5) When slow-release nitrogen products were blended at a ratio of 30-day:60-day:90-day = 1:4:1, rice yield, nitrogen accumulation, and NUE all achieved the highest values, averaging 3.76%,5.66% and13.35% higher than conventional precise fertilization, respectively,which was closely associated with significant increases in leaf area index (LAI), sink capacity, and biomass yield. 【Conclusion】A blended slow-release N fertilizer was formulated by combining three controlled-release fertilizer with dissolution periods of 30 d, 60 d, and 90 d at a 1:4:1 mass ratio. Application of this blended slow-release N with quick-release N at a 7:3 ratio—implemented through one-time basal application of slow-release fertilizer and single topdressing of quick-release N as either tillering fertilizer (for 150-day varieties) or flowering-promoting fertilizer (for >160-day varieties)—significantly increased grain yield by 3.76% and nitrogen use efficiency by 13.55% compared with conventional precision quantification. This field-validated protocol demonstrates sulfur-coated fertilizers enabled synergistic gains in rice productivity and nitrogen utilization efficiency.

Key words: rice, comparison and combination screening of slow-release nitrogen products, optimized slow-release fertilizer application, yield, nitrogen uptake and utilization