中国农业科学 ›› 2025, Vol. 58 ›› Issue (20): 4259-4271.doi: 10.3864/j.issn.0578-1752.2025.20.017

• 盐碱地生态化利用 • 上一篇    下一篇

垄作沟播对滨海盐碱土水盐变化及玉米生长的影响

陈坚1(), 吴柳格1, 张鑫1, 邓艾兴1, 宋振伟1, 张卫建1, 郑成岩1,2()   

  1. 1 中国农业科学院作物科学研究所/农业农村部作物生理生态重点实验室,北京 100081
    2 国家盐碱地综合利用技术创新中心,山东东营 257347
  • 收稿日期:2025-07-22 接受日期:2025-10-04 出版日期:2025-10-16 发布日期:2025-10-14
  • 通信作者:
    郑成岩,E-mail:
  • 联系方式: 陈坚,E-mail:18811739285@163.com。
  • 基金资助:
    中国农业科学院科技创新工程(CAAS-ZDRW202407); 中国农业科学院科技创新工程(01-ICS-20); 国家自然科学基金(32272218); 国家绿肥产业技术体系(CARS-22-G-16)

Effects of Ridge Tillage and Sowing in Furrow on Soil Water and Salt Dynamics and Maize Growth in Coastal Saline-Alkali Land

CHEN Jian1(), WU LiuGe1, ZHANG Xin1, DENG AiXing1, SONG ZhenWei1, ZHANG WeiJian1, ZHENG ChengYan1,2()   

  1. 1 Institute of Crop Science, Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs, Beijing 100081
    2 National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257347, Shandong
  • Received:2025-07-22 Accepted:2025-10-04 Published:2025-10-16 Online:2025-10-14

摘要:

【目的】探究不同种植方式对土壤水盐变化及玉米产量的影响,为进一步挖掘滨海盐碱地产能提供理论依据。【方法】试验于2022—2023年在山东省东营滨海盐碱地进行,采用双因素裂区设计,主区为玉米品种:中试8626(V1)和中单8922(V2);副区为种植方式:平作(P1)、垄作垄播(P2)和垄作沟播(P3),研究种植方式对土壤水盐变化及玉米产量的影响机制。【结果】与P1相比,P3处理的玉米苗期0—40 cm土层含水量增加4.6%,盐分含量降低10.3%;而P2处理的0—40 cm土层含水量降低4.8%,盐分含量升高11.8%。P3处理可以显著提高苗期表层土壤含水量,降低盐分含量,从而提高玉米出苗率,其出苗率比P1处理提高2.9%。与P1相比,P3处理的吐丝期根系干重、根长、根表面积和根体积分别提高18.5%、21.1%、23.1%和26.8%;P3处理的玉米成熟期干物质积累量、有效穗数和穗粒数比P1处理分别增加10.2%、3.1%和4.0%。品种间,V1的出苗率比V2平均提高了5.2%;与V1相比,V2吐丝期的根系干重、根长、根表面积和根体积分别提高26.9%、13.8%、7.1%和26.0%;V2成熟期的干物质积累量和百粒重比V1分别增加7.0%和3.8%,而V1的有效穗数和穗粒数比V2增加5.2%和12.4%。与P1和P2处理相比,P3处理下V1玉米品种的籽粒产量分别提高9.1%和27.1%,V2玉米品种的籽粒产量分别提高10.7%和19.0%。【结论】在本试验条件下,垄作沟播种植能改善土壤的水盐分布,有利于提高中试8626出苗率、穗粒数、收获指数和籽粒产量。

关键词: 盐碱地, 种植方式, 玉米, 水盐动态, 产量

Abstract:

【Objective】Studying the effects of different planting patterns on soil water-salt dynamics and maize yield could provide a theoretical basis for further enhancing the productivity of coastal saline-alkali lands. 【Method】 The experiment was conducted from 2022 to 2023 in the coastal saline-alkali soil of Dongying City, Shandong Province, using a split-plot design with two factors. The main plots consisted of two maize varieties: Zhongshi 8626 (V1) and Zhongdan 8922 (V2), while the subplots included three planting patterns: flat tillage (P1), ridge tillage and sowing on the ridge (P2), and ridge tillage and sowing in the furrow (P3). The study investigated the mechanisms by which ridge tillage and sowing in the furrow affects soil water-salt dynamics and maize yield. 【Result】 Compared with P1, P3 treatment increased soil water content in the 0-40 cm layer by 4.6% and reduced soil salt content by 10.3%, whereas P2 decreased water content by 4.8% and increased soil salt content by 11.8% during the maize seedling stage. The seedling emergence rate under P3 was 2.9% higher than that under P1. Ridge tillage and sowing in the furrow significantly improved topsoil water retention and reduced salinity, thereby enhancing maize emergence. At the silking stage, P3 increased root dry weight, root length, root surface area, and root volume by 18.5%, 21.1%, 23.1%, and 26.8%, respectively, compared with P1. At maturity stage, P3 increased dry matter accumulation, ear number, and kernels per spike by 10.2%, 3.1%, and 4.0%, respectively, compared with P1. The emergence rate of maize in V1 was 5.2% higher than that in V2. Compared with V1, V2 increased root dry weight, root length, root surface area, and root volume at the silking stage by 26.9%, 13.8%, 7.1%, and 26.0%, respectively. At maturity stage, V2 increased dry matter accumulation and 100-grain weight by 7.0% and 3.8%, respectively, compared with P1. However, V1 had 5.2% more ear numbers and 12.4% more kernels per spike than V2. In comparison with P1 and P2, P3 increased yield of V1 by 9.1% and 27.1%, respectively, while P3 increased yield of V2 by 10.7% and 19.0%, respectively. 【Conclusion】 Under the experimental conditions, the maize variety Zhongshi 8626 was selected and planted with ridge tillage and sowing in the furrow. This approach optimized soil water-salt dynamics, which contributed to higher seedling emergence rates, increased kernels per spike, enhanced harvest index, and improved grain yield.

Key words: saline-alkali land, planting, maize, water and salt dynamics, yield