Core Viewpoint - The article discusses the innovative practices in green agriculture being explored in Huizhou, Guangdong, focusing on the promotion of green manure as a means to enhance soil health and sustainable agricultural development [2][3][5]. Group 1: Green Manure Promotion - Guangdong has been actively promoting the cultivation of green manure crops like purple vetch to ensure food security and support ecological civilization [2][3]. - A joint research team from the Guangdong Agricultural Environment and Soil Quality Protection Center and local agricultural departments conducted a study on winter green manure planting and green farming practices in Huizhou [4][5][12]. - The research aims to summarize experiences and innovate industry models to provide a "Huizhou experience" for the province's agricultural green transformation [7][8]. Group 2: Three-Wheel Drive Approach - Huizhou is advancing green manure cultivation through a "three-wheel drive" approach, focusing on system innovation, seed source conservation, and model exploration [8][51]. - The city has established a four-level agricultural technology service system to support green manure promotion, integrating expert guidance and local talent [30][31]. - By 2025, the area planted with purple vetch in Huizhou is expected to reach nearly 12,000 acres, marking a significant increase [32][33]. Group 3: Technical Models for Green Manure - Huizhou has developed three clear and feasible pathways for green manure promotion, including the "rice-rice-manure" model, which can reduce nitrogen fertilizer use by 10%-30% and increase rice yield by approximately 80 pounds per acre [39][40]. - The "fruit and tea garden intercropping" model utilizes summer and winter green manure varieties to maintain soil health and improve crop quality [43][45]. - The "rapid soil improvement" model targets newly cultivated and degraded lands, using fast-growing green manure varieties to enhance soil organic matter and structure [48][50]. Group 4: Future Directions - The research team emphasized the need to strengthen the three-level linkage mechanism to enhance the breeding of superior green manure varieties and conserve local genetic resources [54][55]. - Huizhou aims to deepen the integration of green manure planting with green farming practices, providing replicable experiences for the province's agricultural green development [59][60]. - The ongoing transformation of the green manure industry from merely "soil nurturing" to "wealth generation" reflects a significant shift in agricultural practices in Guangdong [63][65].

Core Viewpoint - The implementation of the soil fertility enhancement action at the South Breeding Base aims to improve soil quality and sustainability for agricultural practices in Hainan, particularly during the off-season for breeding activities [3][4]. Group 1: Soil Fertility Enhancement Action - The South Breeding Management Bureau has initiated a project involving the planting of 10,000 acres of the legume crop, Tianjing, to improve soil health during the off-season [3]. - The project has already covered approximately 40 fixed breeding bases and around 260 breeding units, demonstrating a commitment to sustainable land use [3]. - The investment of over 4 million yuan in this initiative reflects the importance of balancing land use and soil health [3]. Group 2: Benefits of Tianjing - Tianjing is chosen for its heat tolerance, flood resistance, salt tolerance, and disease resistance, growing up to 2.5 meters in just two months [4]. - The crop's effectiveness surpasses that of equivalent weight pig manure, significantly enhancing soil organic matter and nutrient content while reducing soil acidity [4]. - By occupying space that would otherwise be taken by weeds, Tianjing helps to disrupt pest and disease cycles, thereby reducing risks for subsequent breeding activities [4]. Group 3: Implementation and Management - The project employs a "full-process scientific management" approach, including land clearing, uniform seed sowing via drones, and soil amendment with lime to adjust pH levels [4]. - Regular guidance and supervision from technical personnel ensure the effective execution of the project [4]. - The improved soil structure has led to reduced costs for fertilizers and tillage in subsequent planting seasons, demonstrating tangible benefits from the soil enhancement efforts [5].

Core Viewpoint - The new round of South Seedling cultivation season is set to begin, with a focus on improving soil quality in the South Seedling protection area through innovative agricultural practices [2] Group 1: Project Overview - A field observation meeting for the 2025 South Seedling Base Soil Quality Improvement Project was held in Sanya, aimed at promoting the "Winter South Seedling + Summer Green Manure" cultivation model [2] - The project covers an area of 10,000 acres, including a demonstration area of 9,800 acres for the cultivation of field peanuts and a 200-acre core experimental area for enhancing green manure [2] Group 2: Agricultural Techniques - Techniques such as green manure return, inoculation of field peanut root nodule bacteria, acidic soil improvement, and the application of specialized decomposed agents are being utilized to enhance soil quality [2] - The cultivation of field peanuts is chosen for its strong nitrogen-fixing ability, large biomass, and simple management, providing approximately 1.5 tons of organic fertilizer per acre [2] Group 3: Environmental Benefits - The implementation of the cultivation model is expected to effectively reduce soil acidity, prevent soil erosion, and significantly increase soil organic matter content, creating fertile land for the South Seedling season [2] - In the 200-acre core experimental area, additional decomposed agents and soil conditioners have been applied to further enhance soil quality [2]

Core Insights - The article highlights the transformation of saline-alkali land in Dongying, Shandong Province, into productive agricultural areas, showcasing successful aquaculture and crop production initiatives [1][3][10] Group 1: Agricultural Production - The saline-alkali land in Dongying has been utilized to produce 3.7 billion high-quality seedlings and 30,000 tons of commercial shrimp annually [1] - The brand value of local products such as Yellow River crabs and Yellow River rice has significantly increased, reaching 3.193 billion yuan and 1.157 billion yuan respectively [1] Group 2: Soil Improvement Techniques - New soil improvement techniques have been implemented, including "dark pipe drainage" to effectively remove salt from the soil, reducing water usage from 200 cubic meters to 15 cubic meters per acre [3] - A green governance technology system for saline-alkali land has been established, enhancing efficiency by 70% in salt drainage and achieving over 30% savings in water and fertilizer [3] Group 3: Seed Industry Development - The establishment of the National Saline-Alkali Land Comprehensive Utilization Technology Innovation Center focuses on biological breeding and ecological utilization, involving 48 institutions and over 100 expert teams [5] - An integrated breeding innovation system has been developed, significantly shortening breeding cycles and increasing breeding speed by 2 to 4 times [5] Group 4: Modern Governance Models - The "grass-pasture-garden" model for modern governance of coastal saline-alkali land has shown significant results, improving soil quality and increasing organic matter by approximately 25% [8] - The "three-level utilization" model addresses varying degrees of salinity, promoting crop production and ecological restoration tailored to specific land conditions [10] Group 5: Collaborative Mechanisms - A multi-party cooperation mechanism has been formed involving government, research institutions, enterprises, and farmers to support the comprehensive utilization of saline-alkali land [10] - The government has developed policies and plans to support the transformation of saline-alkali land into productive agricultural areas, integrating it into broader agricultural planning [10]