Scientia Agricultura Sinica ›› 2025, Vol. 58 ›› Issue (20): 4047-4053.doi: 10.3864/j.issn.0578-1752.2025.20.002

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Research on Ecological Protection Strategy for Comprehensive Utilization of Saline-Alkali Soil in China

LÜ GuoHua1,2(), WANG QingSuo2, SONG JiaShen1,2, LI YuYi2,3(), MEI XuRong1,2()   

  1. 1 Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081
    2 National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257347, Shandong
    3 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
  • Received:2025-08-03 Accepted:2025-09-24 Online:2025-10-16 Published:2025-10-14
  • Contact: LI YuYi, MEI XuRong

Abstract:

This study provided a systematic review of the ecological issues arising from the development of saline-alkali land in China. These included secondary salinization, the formation of groundwater depression cones, wetland shrinkage and functional degradation, and reduction in natural vegetation, as well as high remediation costs and pollution risks. In addition, it clarified the technological development pathways for the comprehensive utilization of saline-alkali land. These pathways encompassed four major directions: targeted strategies under a systematic management approach, cost-effective remediation under new ecological requirements, dual-force development through land-crop synergy, and specialized agriculture aligned with the broader concept of food. Furthermore, the study proposed an integrated strategy to strengthen the comprehensive management of saline-alkali lands, including emphasizing zonal rehabilitation of saline-alkali farmland, establishing a collaborative innovation system, and advancing fundamental theories and key technologies for sustainable utilization. It also recommended developing a tiered land-use model to support pilot programs for reserve resources and cultivated land, promoting specialized agriculture, enhancing productive capacity, advancing water-adapted planting, fostering innovation in water-saving agricultural technology, and strengthening ecological monitoring and impact assessment. This study provided the theoretical foundation and strategic support for ecological protection in the comprehensive utilization of saline-alkali land in China.

Key words: saline-alkali soil, ecological protection, water-saving agriculture, irrigation and drainage system, strategic research

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