Core Viewpoint - The successful indoor recirculating water incubation of grouper fish in Zhuhai marks a significant advancement in agricultural research and technology, showcasing the potential for innovative aquaculture practices in the region [11][21]. Group 1: Incubation Process - The first batch of fish eggs, weighing 1.2 pounds and approximately 1 million eggs, was successfully incubated, with expectations for a good harvest [2][6]. - The incubation process involves several stages, including hatching the eggs into fish fry, then nurturing them into juvenile fish, requiring meticulous care akin to raising infants [7][8]. - The first incubation attempt on April 4 resulted in 240,000 fry being sold by May 18, indicating a positive market response and prompting a second incubation [15][16]. Group 2: Technological Innovation - The indoor recirculating water incubation system is a key innovation in aquaculture, often referred to as the "chip" of the aquaculture industry, which enhances the success rate of fish hatching [23][24]. - The system includes components such as breeding pools, ecological processors, protein separators, temperature control systems, water quality monitoring systems, and automatic feeding systems, ensuring stable water quality throughout the incubation process [42][44]. - The technology has received three national utility model patents, highlighting its uniqueness and potential impact on the industry [44]. Group 3: Challenges and Expertise - Incubating grouper fish is particularly challenging, with critical stages including the opening of the mouth within three days of hatching and the metamorphosis process, which requires careful management to prevent larger fry from consuming smaller ones [25][26][28]. - The team includes a Hong Kong aquaculture expert, Zhang Zhiming, whose expertise is crucial for overcoming the difficulties associated with grouper incubation [26][34]. Group 4: Future Prospects - The company plans to expand its operations with the construction of additional facilities and breeding pools, which will enhance the capacity to grow juvenile grouper fish into larger sizes, thereby increasing economic benefits [57][58]. - The successful incubation of grouper fish is part of a broader strategy to develop sustainable aquaculture practices and contribute to rural revitalization efforts [60][61].

Core Insights - The report by Yunmanman highlights the digitalization of agricultural logistics in Jiangsu, showcasing a high mechanization rate of 87% and an informationization rate of 51.2% in agricultural production [1] - Jiangsu's agricultural supply chain is characterized by high mechanization, strong regional collaboration, and intelligent integration, transforming farmers from traditional practices to more efficient methods [1] Group 1: Agricultural Machinery - Jiangsu's spring farming shows a trend of local supply dominance, with most agricultural machinery products sourced from within the province, particularly from cities like Suzhou, Wuxi, and Changzhou [1] - The focus in Suzhou is on technological innovation, developing fully automated high-density vegetable transplanting machines and unmanned electric tractors, leading in the Yangtze River Delta region [2] - Wuxi specializes in intelligent and specialty agricultural machinery, with high domestic market shares for products like unmanned plant protection drones and automatic rice transplanters [2] Group 2: Aquatic Seed Transportation - Jiangsu is a key player in the national aquatic seed supply chain, with significant transportation of fish, shrimp, and crab seedlings to other provinces, particularly from cities like Nantong and Yancheng [2][3] - Yancheng is recognized as the "hometown of crab seedlings," contributing to 70% of the national supply, while Nantong produces over 100 tons of crab seedlings annually [2][3] - Suzhou is also involved in breeding special aquatic seedlings, with products reaching provinces like Fujian and Shandong [3] Group 3: Agricultural Resource Distribution - The distribution of agricultural resources in Jiangsu exhibits a "two-way flow" characteristic, with fertilizers primarily sourced from Shandong, Hubei, Henan, and Anhui [3] - Key cities supplying fertilizers to Jiangsu include Linyi, Xinxiang, and Jincheng, while local seed supply is bolstered by inputs from Gansu and Shandong [3] - Yunmanman plays a crucial role in matching agricultural resource transportation needs with logistics, enhancing efficiency through real-time data management [3][4] Group 4: Digital Logistics Infrastructure - The digital logistics platforms like Yunmanman are becoming essential infrastructure for optimizing the agricultural supply chain and improving spring farming efficiency [4] - The integration of intelligent upgrades in agricultural machinery and nationwide distribution of aquatic seedlings contributes to a robust material foundation for spring farming in Jiangsu [4]

Core Insights - The report highlights the significant trends in agricultural production during the spring plowing season, emphasizing the digital transformation of logistics and the clustering of agricultural material industries [1][6] - The rise of specialty agriculture is leading to an accelerated expansion of aquaculture into inland regions, reflecting a shift in agricultural practices [1][6] Group 1: Agricultural Material Transportation - The report indicates a trend towards the clustering of agricultural machinery transportation, with large equipment production becoming centralized while smaller and specialty machinery is developing regionally [2][4] - Key provinces for agricultural machinery transportation include Hebei, Shandong, Inner Mongolia, Jiangsu, Xinjiang, and Henan, with cities like Cangzhou and Xingtai showing high transportation volumes [4][5] - The report notes that the digitalization of road freight is enhancing the efficiency of spring agricultural material transportation, linking multiple industries [1][6] Group 2: Aquaculture Expansion - The report outlines the growing trend of aquaculture moving inland, with regions like Northwest, North China, and Northeast China starting to cultivate shrimp, crabs, and fish in saline-alkali lands [6][8] - Significant transportation volumes for fish fry are reported from provinces such as Fujian, Guangdong, Hubei, and Jiangsu, with specific cities like Zhangzhou and Xiamen being prominent [6][7] - The data indicates that the transportation of crab fry is concentrated in provinces like Jiangsu, Liaoning, and Anhui, with cities such as Nantong and Suzhou leading in transportation volumes [7][8]

海南的虾苗运输至宁夏的盐碱地养殖，这在科技助力下已然实现。海南省优质虾苗宁夏推介会暨水产合 作洽谈会日前在宁夏回族自治区银川市举行。活动上，签订5个虾苗订单，涉及对虾苗2500万尾，罗氏 沼虾苗5000万尾。 海南是全国重要的水产种苗输出地，其中虾苗是海南水产种业的标杆旗帜产品，每年培育虾苗2000亿 尾，80%销往省外对虾养殖主产区，同时受益于优越的自然条件，海南出产的虾苗具有生长快、抗性 强、周期短的优势特点。近年来，随着盐碱水虾养殖技术的突破，海南虾苗开始在宁夏、内蒙古等内陆 地区寻求销路。 宁夏近年来抓住国家盐碱地综合利用政策契机，因地制宜发展盐碱地海鱼陆养，南美白对虾、斑节对 虾、青蟹、黄鳍鲷、花鲈、海参、螺旋藻等多个海水品种成功养殖。海鲜在宁夏成功"安家"的背后，是 养殖技术的因地制宜与不断创新。目前，多家"海鱼陆养"示范基地通过建立封闭循环水培养系统、过滤 系统、消毒系统等去除水中的杂质，消杀有害细菌和病毒，确保水质纯净适宜。同时，使用加热或冷却 设备保持水温稳定，模拟海洋生物所需的自然环境。据统计，宁夏水产品产量已经连续10年实现稳定生 产，80%的水产品销售市场辐射周边6个省区，是向西部延展 ...

证券代码：002311 证券简称：海大集团 广东海大集团股份有限公司投资者关系活动记录表 编号：2025-009 | | □特定对象调研□分析师会议 | | --- | --- | | 投资者关系活动 | □媒体采访□业绩说明会 | | 类别 | □新闻发布会□路演活动 | | | □现场参观 | | | 其他（券商策略会） | | 共 参与单位名称及 | 近期，公司前往宁波、上海参加券商策略会，国盛证券、中信证 券、富国基金、银华基金、汇添富基金、淡马锡投资等多家机构 位投资者参与。名单详见附件清单。 35 | | | 重要提示：1、参会人员名单由主办机构提供并经整理后披露。公 | | 人员姓名 | 司无法保证所有参会人员及其单位名称的完整性和准确性，敬请 | | | 投资者注意；2、本记录表所涉及公司业务规划目标等前瞻性陈述， | | | 不构成公司对任何投资者及相关人士的实质承诺，请投资者注意 | | | 投资风险。 | | 时间 | 2025 年 5 月 | | 地点 | 宁波、上海 | | 上市公司接待人 | 证券部经理李坦航 | | 员姓名 | | | 投资者关系活动 | 公司就投资者提出的问题 ...

琼宁联手推动水产"南北合作"模式落地 7500万尾海南虾苗将在宁夏"安家" 海南日报讯（海南日报全媒体记者 孙慧）海南的虾苗，运输至宁夏的盐碱地养殖，这在科技的助 力下即将实现。近日，海南省优质虾苗宁夏推介会暨水产合作洽谈会在宁夏回族自治区银川市举行，现 场签订5个虾苗订单，涉及对虾苗2500万尾，罗氏沼虾苗5000万尾。 海南是全国重要的水产种苗输出地，其中虾苗是海南水产种业的标杆旗帜产品，每年培育虾苗2000 亿尾，80%销往省外对虾养殖主产区。受益于优越的自然条件，海南出产的虾苗具有生长快、抗性强、 周期短的优势特点。近年来，随着盐碱水虾养殖技术的突破，海南虾苗开始积极寻求在宁夏、内蒙古等 内陆地区拓展销路版图。 近年来，宁夏抓住国家盐碱地综合利用政策契机，因地制宜发展盐碱地海鱼陆养，南美白对虾、斑 节对虾、青蟹、黄鳍鲷、花鲈、海参、螺旋藻等多个海水品种成功养殖。据统计，宁夏水产品产量已经 连续10年实现稳定生产，80%水产品销售市场辐射周边6个省区，是向西部延展运销和二次批发的中转 站。 海南的虾苗繁育优势，与宁夏的渔业发展需求精准契合，资源互补性强，合作前景广阔。此次宁夏 之行，海南省水产技术推广站 ...

《中国民航报》、中国民航网 记者胡夕姮 报道：五月骄阳照耀江淮沃野，鱼虾苗迎来繁育生长的黄金 时节。这个"五一"假期，扬州泰州国际机场（以下简称"扬泰机场"）将一批批鲜活鱼虾苗运往全国各 地，这场繁忙而特殊的"鲜味速递"成为民航运输中的别样风景。 扬泰机场近期还推出"鲜活极速提"服务，进港的鲜活类货物从落地到提货仅需40分钟。 8时50分，搭载3吨鳗鱼苗的航班从扬泰机场准点起飞，2小时后平稳落地广州。从货物抵达机场到航班 降落，全程仅用4小时，这条空中绿色通道较传统运输压缩近60%的时间。 特殊措施护航，精准把控充氧与温控 "空中鲜味快线"正以稳定运力为全国水产养殖户输送优质种苗。"我们机场运送的水产品主要是经济价 值较高的水产苗种，如南美白对虾苗、石斑鱼苗、鲈鱼苗等。其中，南美白对虾苗具备生长速度快、适 应性强、肉质鲜美等特点，市场需求旺盛。蟹苗、小龙虾及观赏鱼的运输量也占不小比例，呈显著增长 态势。"常斌介绍。5月3日，扬泰机场虾苗出港保障重量约20.1吨；5月4日，鱼虾苗订舱共计10个出港 航班，订舱重量约17吨。这些产品的目的地主要是广州、珠海、厦门及揭阳等地。 为确保水产品在运输过程中的存活率，机场 ...