In recent years, research projects and enterprises have documented that the sugar kelp, Saccharina latissima, can be successfully cultivated in Northern European waters. There is a need however, for optimizing production methods to achieve an economically viable and competitive business. A novel direct seeding method, applying juvenile sporophytes directly onto textiles immediately before deployment, could be part of the optimization, as it obviates the nursery process, and can be combined with novel seeding materials, such as non-woven textiles. An extensive comparison of biomass yield and quality was made between direct and traditional seeding methods and substrates, including three deployment campaigns in three different cultivation sites: Textile ribbons were directly seeded with juvenile sporophytes (<1 mm size), and deployed the following day, whereas kuralone twine was traditionally seeded with spores, and deployed after a nursery period. The seeded materials were deployed in September, October and November, at Hjarnø and Limfjorden, and in November at the Grenaa site. The direct seeding method gave yields comparable to the traditional seeding method (1.0 ± 0.1 kg FW m⁻¹ and 1.0 ± 0.2 kg FW m⁻¹, respectively) at the most exposed site, whereas at the sheltered sites, the direct seeding method only resulted in a measurable yield following the October deployment. The highest biomass yield was achieved using the traditional seeding method, deployed in September in the Limfjorden (1.6 ± 0.4 kg FW m⁻¹). The biomass quality was not affected by seeding method, but differed significantly between sites, with biomass from the Limfjorden having the highest content of nitrogen (4.65 ± 0.07% N of DM) and the lowest content of iodine (1.612 ± 271 mg I kg⁻¹ of DM). In future cultivation practices, the direct seeding method could be implemented in exposed locations in Danish waters, whereas for the more sheltered/turbid waters, improvements are needed for the direct seeding technique to become feasible.

近年来，研究项目和企业已经记录了糖海带，Saccharina latissima，可以在北欧水域成功种植。然而，需要优化生产方法以实现经济上可行和有竞争力的业务。一种新颖的直接播种方法，可以在部署之前立即将幼孢子体直接应用到纺织品上，这是优化的一部分，因为它避免了育苗过程，并且可以与新型播种材料（例如非织造纺织品）结合使用。对直接播种方法和传统播种方法与底物之间的生物质产量和质量进行了广泛的比较，包括在三个不同的种植地点进行了三个部署活动：将纺织带直接播种有幼小孢子体（<1毫米大小），并在第二天进行部署，传统上，可乐酮麻绳是用孢子播种的，在育苗期后才部署。播种材料分别于9月，10月和11月在Hjarnø和Limfjorden以及11月在Grenaa现场部署。直接播种法的产量可与传统播种法相比（1.0±0.1 kg FW m^-1和1.0±0.2 kg FW m ^-1）分别在最裸露的地方，而在有遮蔽的地方，直接播种方法仅在10月部署后产生可测量的产量。使用传统的播种方法获得了最高的生物量产量，该方法于9月部署在Limfjorden（1.6±0.4 kg FW m ^-1）。生物质质量没有受到播种的方法，但站点之间显著不同，与来自Limfjorden具有氮含量最高（DM的4.65±0.07％N）和碘（最低含量的生物质1.612±271毫克我公斤^{- 1个}DM）。在将来的耕作实践中，可以在丹麦水域的裸露位置实施直接播种方法，而对于更隐蔽/浑浊的水域，则需要改进以使直接播种技术变得可行。