Core Viewpoint - The "salt to water" and "dry to water" land improvement projects in Panjin County, Liaoning Province, aim to transform low-yield saline and dry land into productive rice paddies, enhancing agricultural output and ecological conditions [1][2][3]. Group 1: Project Overview - The total construction scale of the "salt to water, dry to water" project exceeds 17,800 acres, with an expected addition of 9,784 acres of arable land upon completion [1]. - The project involves land leveling, tilling, organic fertilization, soil composition improvement, and the construction of drainage and irrigation facilities [1][2]. Group 2: Agricultural Transformation - The project aims to control the salt content in the soil to below 1‰ through methods such as deep plowing, soil amendment, and irrigation to wash away salt [2]. - Farmers have reported increased income from transitioning from dry land to water fields, with one farmer noting an increase from 660 yuan per acre to higher earnings from rice and crab farming [3]. Group 3: Economic and Ecological Impact - The transformation of saline and dry land is expected to improve ecological conditions by addressing issues related to the uncontrolled extraction of saline water and excessive chloride discharge [2]. - The project is anticipated to boost local economic development and enhance the income of farmers, contributing to the overall revitalization of rural areas [3].

Core Viewpoint - The article emphasizes the importance of land conservation and sustainable agricultural practices, highlighting various successful initiatives in China aimed at restoring degraded land and improving agricultural productivity [7]. Group 1: Land Restoration Initiatives - In Huan County, a total of 1.36 billion yuan has been invested since 2019 to restore 370 erosion gullies, significantly improving land stability and agricultural output [9]. - After comprehensive restoration, nearly 5 acres of previously eroded land were reclaimed, allowing for increased corn planting and reduced operational costs due to mechanization, resulting in an annual income increase of 6,000 yuan for local farmers [10]. - The county has achieved a water and soil conservation rate of 91.95% through innovative management models that involve both enterprises and local farmers [11]. Group 2: Agricultural Innovation - In Jiangxi Province, a previously flooded area has been transformed into a productive corn base, yielding a total output of over 2.7 million pounds, with a single-season yield of 2,500 pounds per acre [12][13]. - The local government has initiated scientific reclamation efforts, increasing soil organic matter from 1.2% to 2.1% and expanding the planting area by over 300 acres [14]. - The introduction of fresh corn cultivation has provided local farmers with multiple income streams, including land rental fees and daily wages from farm work [14]. Group 3: Saline-Alkali Land Improvement - In Dongying City, a comprehensive improvement project for saline-alkali land has led to increased grain yields and enhanced farmer incomes through collective investment and shared profits [15][16]. - The use of real-time data monitoring for soil conditions has improved agricultural practices, allowing for precise irrigation and fertilization [16]. - The introduction of salt-tolerant crop varieties has resulted in significant yield increases, with wheat production exceeding 1,000 pounds per acre in previously unproductive saline-alkali areas [17].

Core Insights - Shandong province has successfully transformed saline-alkali land into high-standard farmland, significantly increasing grain production and quality [1][6][9] - The province has built 77.59 million acres of high-standard farmland and developed 53.59 million acres of efficient water-saving irrigation, stabilizing total grain production above 110 billion jin for four consecutive years [1][9] Group 1: Infrastructure Development - The city of Changyi has implemented a comprehensive monitoring system using 5G, IoT, and big data technologies to enhance agricultural management and increase grain production [2][3] - Changyi has established 660,000 acres of high-standard farmland, improving grain production capacity and disaster resistance [3] - The city plans to invest 102 million yuan in 2024 to build 35,000 acres of high-standard farmland, with a goal of constructing and upgrading 300,000 acres this year [3] Group 2: Saline-Alkali Land Management - The management of saline-alkali land in the Yellow River Delta has been prioritized, with a focus on improving irrigation efficiency and reducing soil salinity through innovative techniques [4][6] - The implementation of the "multi-water source coordination" project aims to address water shortages and improve irrigation systems in saline-alkali areas [4] - Shandong has been a pioneer in developing provincial-level policies for the comprehensive utilization of saline-alkali land, with over 2 million acres improved in recent years [6] Group 3: Water-Saving Irrigation Techniques - The introduction of efficient water-saving irrigation systems has significantly reduced labor and water usage in agricultural practices across various regions [7][8] - In Yucheng City, the average yield increase from high-standard farmland is over 100 kg per acre, with a total investment exceeding 700 million yuan since 2019 [8] - Shandong has invested 21.3 billion yuan in the past three years to establish high-efficiency water-saving irrigation demonstration areas covering 28.58 million acres [9]

Core Viewpoint - The article highlights the innovative approaches taken in Jilin Province to improve saline-alkali land through the cultivation of water bamboo (茭白), which shows significant potential for soil improvement and increased agricultural productivity [2][4][12]. Group 1: Saline-Alkali Land Utilization - Jilin Province has over 6.7 million acres of saline-alkali land, with more than 2 million acres already developed [2]. - The cultivation of water bamboo in saline-alkali areas has demonstrated a decrease in soil pH from an average of 9.32 to 9.0, indicating effective soil improvement [2]. - Water bamboo's extensive root system helps break up soil compaction and enhances organic matter in the soil through the return of straw [6][4]. Group 2: Seedling Cultivation Innovations - The use of substrate seedling cultivation has replaced traditional soil-based methods, utilizing local agricultural waste to create a nutrient-rich growing medium [9][11]. - New substrate seedlings show a 20% increase in root mass and a reduction in the acclimatization period by 3 days compared to traditional methods, with a projected reduction of 100,000 tons in black soil extraction this year [11] [7]. Group 3: Technological Advancements in Agriculture - Advanced techniques, including the use of green biological agents and drones for applying soil amendments, have been implemented to improve the quality of saline-alkali land [13][14]. - Over 100 saline-alkali land management projects have been initiated in Jilin Province, resulting in the addition of over 800,000 acres of arable land and an expected annual increase in grain production of nearly 1 billion pounds [14].