中国农业科学 ›› 2025, Vol. 58 ›› Issue (20): 4158-4177.doi: 10.3864/j.issn.0578-1752.2025.20.010

• 盐碱地生态化利用 • 上一篇    下一篇

智能滴灌水肥耦合模式实现土壤节水控盐与向日葵产量品质协同提升

韩哲群1,3(), 苏莹3, 高奇奇1(), 刘美英3, 贾昂元1, 张海睿1, 南珊珊1, 徐勤政4, 王强4, 王利军4, 武雪萍1,2()   

  1. 1 北方干旱半干旱耕地高效利用全国重点实验室(中国农业科学院农业资源与农业区划研究所),北京 100081
    2 国家盐碱地综合利用技术创新中心,山东东营 257347
    3 内蒙古农业大学资源与环境学院/内蒙古自治区土壤质量与养分资源重点实验室/农业生态安全与绿色发展自治区高等学校重点实验室,呼和浩特 010011
    4 新疆慧尔农业集团股份有限公司,新疆昌吉 831109
  • 收稿日期:2025-07-22 接受日期:2025-09-28 出版日期:2025-10-16 发布日期:2025-10-14
  • 通信作者:
    高奇奇,E-mail:
    武雪萍,E-mail:
  • 联系方式: 韩哲群,E-mail:2081149208@qq.com。
  • 基金资助:
    国家重点研发计划(2023YFD2001401); 中国农业科学院重大科技任务项目(CAAS—ZDRW202407); 新疆天池英才计划

Intelligent Drip Irrigation Water-Fertilizer Coupling Regime Realizes Synergistic Improvement of Soil Water Conservation, Salt Control and Sunflower Yield and Quality

HAN ZheQun1,3(), SU Ying3, GAO QiQi1(), LIU MeiYing3, JIA AngYuan1, ZHANG HaiRui1, NAN ShanShan1, XU QinZheng4, WANG Qiang4, WANG LiJun4, WU XuePing1,2()   

  1. 1 State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China (Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences), Beijing 100081
    2 National Center of Technology Innovation Center for Comprehensive Utilization of Saline-Alkali Land, Dongying 257347, Shandong
    3 College of Resources and Environment Sciences, Inner Mongolia Agricultural University/Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources/Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot 010011, Inner Mongolia
    4 Xinjiang Huir Agricultural Group Limited Liability Company, Changji 831109, Xinjiang
  • Received:2025-07-22 Accepted:2025-09-28 Published:2025-10-16 Online:2025-10-14

摘要:

【目的】针对内蒙古引黄灌区盐碱地土壤肥力差、水盐失衡制约向日葵生产的问题,探究智能滴灌水肥耦合模式对引黄灌区盐碱地土壤及向日葵生长和产量品质的调控效应。【方法】基于2年的田间试验结果,于2023—2024年在内蒙古达拉特旗开展双因素裂区试验,以向日葵为供试作物,主区为漫灌和滴灌两种灌溉方式,副区为单施化肥(F)、化肥+秸秆(FS)、化肥+牛粪(FM)、化肥+高碳基肥(FH)4种施肥模式。分析不同水肥管理模式对土壤理化性质、向日葵产量品质及养分生理效率的影响。【结果】两年试验中,智能滴灌水肥一体化与漫灌传统施肥相比,显著降低0—40 cm土层土壤电导率(EC)41.2%,增加土壤含水量15.0%,增加硝态氮(NO3--N)含量37.8%,增加土壤有机碳含量(SOC)10.8%。传统漫灌下,0—40 cm土层中,与F相比,有机物料添加显著降低EC值7.3%—27.0%,使pH降低0.08—0.51,增加SOC含量3.8%—13.0%,增加NO3--N含量9.2%—48.2%,增加有效磷含量(AP)32.2%—62.7%,增加速效钾含量(AK)12.4%—22.7%。智能滴灌下,0—40 cm土层中,与F处理相比,有机物料添加显著降低EC值3.7%—28.5%,增加SOC含量4.3%—9.5%,增加NO3--N含量17.2%—41.4%,增加AP含量20.3%—48.8%,增加AK含量3.6%—26.6%。此外,智能滴灌水肥一体化与传统漫灌施肥相比,向日葵株高与茎粗分别显著提高16.7%和85.4%,氮素生理效率(NPE)、磷素生理效率(PPE)分别提升26.6%、34.1%,生物产量和籽粒产量分别提高12.8%和89.5%,水分利用效率(WUE)提高67.7%。传统漫灌下,与F相比,有机物料添加显著增加株高16.7%—17.5%,PPE增加27.1%,生物产量增加37.0%—43.9%,籽粒产量增加6.0%—25.2%,WUE增加6.0%—25.2%,出仁率增加13.0%—17.9%,籽粒脂肪含量增加9.7%。智能滴灌下,与F相比,有机物料添加显著增加株高7.6%,NPE提高15.2%—17.2%,PPE增加17.2%,生物产量增加23.7%,籽粒产量增加4.6%—20.4%,WUE增加4.6%—20.4%,出仁率增加6.2%—10.2%,籽粒脂肪含量增加3.3%。Mantel分析显示生物产量和籽粒产量与土壤含水量、SOC、株高、茎粗、NPE、PPE呈显著正相关关系,与pH和EC呈显著负相关关系(P<0.01)。综合分析,智能滴灌水肥一体化与牛粪或高碳基肥配施效果最好,是引黄灌区盐碱地适宜的水肥管理模式。【结论】智能滴灌下有机物料添加的水肥耦合模式通过降低土壤盐分、提升养分有效性和作物生理效率,有效地改善了盐碱地质量,并促进了向日葵产量和品质提升。

关键词: 盐碱地, 有机物料, 智能滴灌, 土壤理化性质, 植物养分, 产量

Abstract:

【Objective】In response to the issues of low soil fertility and water-salt imbalance constraining sunflower production in the saline-alkali soils of the Yellow River Irrigation Area (YRIA) in Inner Mongolia, this study investigated the regulatory effects of an intelligent drip irrigation-based water-fertilizer coupling regime on the saline-alkaline soil properties, as well as on sunflower growth and yield.【Method】Based on a two-year field study, this research employed a two-factor split-plot design conducted in Dalate Banner, Inner Mongolia, during 2023-2024. Sunflower was used as the test crop, with two irrigation methods, including surface irrigation and drip irrigation-assigned to the main plots, and four fertilization regimes applied in the sub-plots: chemical fertilizer alone (F), chemical fertilizer plus straw incorporation (FS), chemical fertilizer combined with cow manure (FM), and chemical fertilizer supplemented with high-carbon basal fertilizer (FH). The study evaluated the effects of different water-fertilizer management strategies on soil physicochemical properties, sunflower yield and quality, as well as nutrient physiological efficiency.【Result】Based on the two-year experimental period, the intelligent drip irrigation coupled with integrated water-fertilization practice significantly reduced soil electrical conductivity (EC) in the 0-40 cm layer by 41.2%, increased soil moisture content by 15.0%, elevated nitrate nitrogen (NO3--N) content by 37.8%, and enhanced soil organic carbon (SOC) content by 10.8%, compared with traditional flood irrigation with conventional fertilization. Under traditional flood irrigation, the application of organic amendments significantly decreased EC by 7.3%-27.0% and reduced pH by 0.08-0.51 units relative to the chemical-fertilizer-only (F) treatment, while increasing SOC by 3.8%-13.0%, NO3--N by 9.2%-58.2%, available phosphorus (AP) by 32.2%-62.7%, and available potassium (AK) by 12.4%-22.7% in the 0-40 cm soil layer. Under intelligent drip irrigation, organic amendments led to a reduction in EC by 3.7%-28.5% and increased in SOC by 4.3%-9.5%, NO3--N by 17.2%-61.4%, AP by 20.3%-48.8%, and AK by 3.6%-26.6%, compared with F treatment. In terms of crop performance, integrated intelligent drip irrigation with fertigation significantly enhanced sunflower plant height and stem diameter by 16.7% and 85.4%, respectively, over traditional flood irrigation. Nitrogen physiological efficiency (NPE) and phosphorus physiological efficiency (PPE) increased by 26.6% and 34.1%, respectively; biomass yield and grain yield rose by 12.8% and 89.5%, respectively; and water use efficiency (WUE) improved by 67.7%. Under traditional flood irrigation, organic amendments significantly raised plant height by 16.7%-17.5%, PPE by 27.1%, biomass yield by 37.0%-43.9%, grain yield by 6.0%-25.2%, WUE by 6.0%-25.2%, kernel percentage by 13.0%-17.9%, and grain fat content by 9.7% compared with F treatment. Under intelligent drip irrigation, organic amendments significantly improved plant height by 7.6%, NPE by 15.2%-17.2%, PPE by 17.2%, biomass yield by 23.7%, grain yield by 4.6%-20.4%, WUE by 4.6%-20.4%, kernel percentage by 6.2%-10.2%, and grain fat content by 3.3% relative to F treatment. Mantel analysis indicated that biomass yield and grain yield were significantly positively correlated with soil water content, SOC, plant height, stem diameter, NPE, and PPE (P<0.01), and significantly negatively correlated with pH and EC. In summary, the combined application of intelligent drip irrigation with water-fertilizer integration, particularly in conjunction with cow manure or high-carbon basal fertilizer, demonstrated the most favorable outcomes, representing the most suitable water and fertilizer management strategy for saline-alkali soils in the Yellow River irrigation area. 【Conclusion】 The integrated water-fertilizer regime under smart drip irrigation, combined with organic amendments, enhanced saline-alkali soil quality and sunflower productivity by effectively reducing soil salinity, improving nutrient availability, and increasing crop physiological efficiency.

Key words: saline soil, organic matter, smart drip irrigation, soil physicochemical properties, plant nutrients, yield