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绿色蝶变“水密码”——山东省水利赋能盐碱地改良纪实
Zhong Guo Jing Ji Wang· 2025-11-21 06:53
Core Viewpoint - Shandong Province is implementing a comprehensive approach to manage saline-alkali land, focusing on water management, technological innovation, and reform to ensure food security and improve agricultural productivity [1][4][5]. Group 1: Water Management - The saline-alkali land in Shandong covers over 8.9 million acres, primarily in coastal areas, which has historically hindered agricultural production [1]. - In the Binzhou and Dongying regions, saline-alkali land constitutes 70.33% and 80% of arable land, respectively, making water management critical for agricultural success [4][5]. - Shandong is enhancing water infrastructure to support saline-alkali land management, with projects like the West Water East Transfer project capable of transferring 25 million cubic meters of water annually [6][7]. Group 2: Technological Innovation - Technological improvements have significantly reduced soil salinity levels in demonstration areas, with soil salinity dropping from 16‰ to 3‰ and pH levels optimized to 7.95, leading to increased crop yields [8][9]. - The implementation of digital twin irrigation systems allows for real-time monitoring and data-driven irrigation management, improving water use efficiency by over 10% [12][13]. Group 3: Reform and Investment - Shandong is reforming agricultural water pricing and rights allocation to enhance water resource management, providing double water rights for trial areas to stimulate saline-alkali land development [13][14]. - The introduction of social capital into saline-alkali land management has led to significant investments, with land rental prices increasing from 200-300 yuan to over 760 yuan per acre after improvement [14][15]. - The provincial government aims to create a modern water network and continue the modernization of irrigation systems to support sustainable agricultural practices [15].