新华社北京12月19日电 题：攥紧中国种子 新华社记者 农业现代化，种子是基础。 习近平总书记 高度重视种业振兴行动，强调把种源安全提升到关系国家安全的战略高度，"实现种 业科技自立自强、种源自主可控"。 五年前的中央经济工作会议提出，要开展种源"卡脖子"技术攻关，立志打一场种业翻身仗。2021年 7月，中央深改委第二十次会议审议通过《种业振兴行动方案》，为推动我国由种业大国向种业强国迈 进明确了路线图、任务书。 五年间，在 习近平总书记 指引下，各地各部门攻坚克难推进种业振兴行动，培育了一批突破性新 品种，更好保障国家粮食安全、更好守护人们的美好生活。 靠"中国种"护"中国粮" 时值冬季，海南三亚仍温暖如春。 崖州湾科技城的试验田里，数十亩大豆秧苗透出浓浓绿意。这几天，崖州湾国家实验室大豆种子创 新团队首席科学家田志喜正在认真观察秧苗性状，努力挖掘作物增产稳产的"基因密码"。 每年11月至次年4月，在海南开展南繁育种加代和相关研究；4月起收获育种材料后陆续到各地播 种；6月到10月，频繁辗转各地查看材料的生长表现……田志喜说，通过南繁科研培育，聚合多种优良 性状的大豆育种材料已在10多个省份开展种植测试。 ...

Core Viewpoint - The article highlights the development of Yangjiang's marine economy, focusing on the establishment of modern marine ranching and the integration of various industries to enhance economic growth and sustainability [1][2][3]. Group 1: Marine Ranching Development - Yangjiang has created three national-level marine ranch demonstration zones, including the largest in the country, with a planned seawater aquaculture area of 24,300 hectares and an output of 820,000 tons by 2024, accounting for 21.8% of the province's total [8][9]. - The city has seen a 4.46% increase in seawater aquaculture output in the first half of 2025, reaching 385,000 tons, marking the highest growth rate in five years [9]. - Yangjiang is advancing a project called "34715," which aims to develop a comprehensive marine ranching industry chain and promote the modernization of marine fisheries [25][26]. Group 2: Deep-Sea Aquaculture Initiatives - The city has established three deep-water net cage aquaculture bases, with a total of 955 deep-water cages, ranking second in the province for both quantity and output [33]. - The "Yangxi No. 1" deep-sea comprehensive aquaculture platform project, which includes a main breeding platform and 30 deep-water cages, has begun construction and is designed to withstand severe weather conditions [35][36]. - The "Hailing Island No. 1" ecological marine ranch innovation park project aims to enhance intelligent aquaculture, with an expected output of 1,700 tons and an annual value of nearly 50 million yuan [40]. Group 3: Seed Industry and Technological Advancements - Yangjiang is a significant base for marine seed production, with projections for 2024 to produce 4.5 billion oyster seeds, 8.8 billion shrimp seeds, and over 3.3 billion marine fish seeds, accounting for over 49% of the province's total [49][51]. - The city has established a "Guangdong Provincial Doctoral Workstation" to enhance fish seed quality and production, with an annual output of approximately 300 million fish seeds valued at 100 million yuan [46][48]. - Yangjiang has developed a comprehensive marine seed industry system, with over 1,000 marine seed hatchery enterprises, and aims to create a national model for marine seed industry development [60][64]. Group 4: Integration of Marine Economy and Tourism - The Yangjiang Hailing Island International Seafood Trading Market serves as a vital platform for connecting local seafood with external markets, enhancing the region's economic profile [74]. - The city is promoting the integration of marine ranching with tourism through events like the "Fishing Season" and "Oyster Food Week," aimed at increasing brand awareness and cultural promotion [76][77]. - Yangjiang is exploring new development paths by integrating marine ranching with offshore wind power, involving major state-owned enterprises to enhance the marine economy [79][80]. Group 5: Future Development Plans - By 2030, Yangjiang plans to establish a modern marine ranching area of approximately 131 square kilometers, with an annual output of 1.05 million tons of marine products and a processing rate of 40% [96][97]. - The city aims to transform its traditional "relying on the sea" approach into a strategic "marine economy" development model, contributing significantly to the "New Guangdong" initiative [100][104].