我省实施南繁基地土壤地力提升行动 种田菁给土壤养好"身子骨" 省南繁管理局工作人员使用无人机进行田间管理。 省南繁管理局供图 海南日报抱由11月5日电（海南日报全媒体记者 孙慧）11月5日，在乐东黎族自治县国家南繁科研育种基 地内，田菁长势旺盛。随着农机轰鸣驶入田地，田菁被粉碎还田、养田。 南繁育种具有鲜明的季节性。每年10月到次年4月，1000多家单位到海南南繁基地开展科研育种，此后基 地便会进入长达约5个月的"空窗期"，不仅面临台风暴雨冲刷导致的水土流失，更因长期连作、养分透支出现 土壤酸化、有机质偏低和板结等问题，直接影响南繁育种质量与土地可持续利用。 省南繁管理局相关负责人表示，该局投入400余万元启动"万亩田菁"绿肥种植计划，目的是示范引导南繁 单位树立"用地与养地并重"理念，通过绿肥种植与综合改良，将"空窗期"转化为"养地期"。今年7月项目实施 以来，已覆盖乐东40家固定南繁基地约260家南繁单位，约万余亩田地。 为何选择田菁作为夏季绿肥？海南大学三亚南繁研究院博士郑继成给出专业解答：田菁喜热、耐涝、耐 盐且抗病，生长2个月即可达2.5米高；其肥效优于同等重量猪粪，压青还田后相当于每亩增施1至2吨 ...

海南日报三亚10月15日电(海南日报全媒体记者 刘杰)新一轮南繁季即将开启，10月15日，三亚市 崖州区举办2025年南繁基地地力提升项目现场观摩会，示范推广"冬季南繁+夏季绿肥"耕作模式和相关 技术应用，提高南繁保护区土壤耕地质量。 以往，7月到9月是南繁"空档期"，南繁基地的土地大多处于无人打理的抛荒状态。今年，三亚市崖 州区农业农村局委托海南益鑫现代农业发展有限公司，在崖州区国家南繁科研育种基地保护区内实施地 力提升项目，面积达1万亩，打造9800亩田菁种植示范区与200亩绿肥提质增效核心试验区，通过绿肥还 田、田菁根瘤菌接种、酸性土壤改良、田菁专用型腐熟剂应用等技术，全面提升南繁保护区耕地质量。 为何选择种植田菁?该项目技术指导、南京农业大学三亚研究院教授李辉信介绍，田菁作为豆科绿 肥植物，具有固氮能力强、生物量大、管理简单等优势，通过"冬季南繁+夏季绿肥"的耕作模式，可以 为每亩土地提供约1.5吨的有机肥，有效降低土壤酸性，避免水土流失，显著增加土壤有机质含量，为 南繁季打造一片"沃土"。今年他们在200亩核心试验区增施了腐熟剂、土壤调理剂等药剂，为耕地"加 餐"。 三亚推广"冬季南繁+夏季绿肥" ...

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]