本文研究了海涂红麻收剥期、施钾量和定苗密度三个因子对其产量和品质的影响。结果表明，高产栽培因子组合是迟收、低密度、高钾和迟收、高密度、高钾。老围垦麻地增施钾肥增产效果突出；新围垦麻地则以推迟收剥增产最多。密度对产量表现出较大的弹性，但适当增加密度可以提高茎杆中韧皮纤维的含量，同时降低杆芯髓占比。高产组合杆芯木质纤维细胞长度和长宽比十分理想。小区试验结果在示范中得到证实。 In this paper, we studied the effects of three factors of harvesting time, potassium application rate and seedling density on the yield and quality of kelp. The results showed that the combination of high yielding cultivation factors was delayed, low density, high potassium and late income, high density and high potassium. The old reclamation Ma land increased by K fertilizer yield effect outstanding; new reclamation Ma Dadi put delayed production and release the most yield. Density showed greater flexibility in yield, but appropriate increase in density can increase the content of bast fibers in the stem, while reducing rod core ratio. High-yielding combination of core-length lignocellulosic cells length and aspect ratio is very good. Cell test results in the demonstration have been confirmed.