The invention discloses an offshore
porphyra yezoensis
thallus cultivation method. During
porphyra yezoensis
thallus cultivation, a sea area with the
water depth of 10m-40m at low tide is selected,
seawater flow velocity is 0.5m / s-3.5m / s, and
total nitrogen content is 150mg / m<3>-500mg / m<3>. A full-floating raft frame is adopted, parallel to a prevailing
wind direction or
tidal current, arranged ina wave-heading manner along the current and divided into a plurality of large areas, frame floating ropes with the diameters of 18mm are arranged on the peripheries of the large areas, and the framefloating ropes at four corners of each large area are fixedly connected with
pile foundations sequentially through empty ropes and
pile cables. Each large area is divided into a plurality of small areas, a web curtain is connected into each small area through a middle floating
rope, and corners of the web curtains are hung on the corresponding floating ropes. By
layout of culture large and small areas, production operation is facilitated,
seawater flow is also facilitated,
nutrition supply for
porphyra yezoensis
thallus cultivation cannot be affected by
seawater depth and can be performed in adeeper sea area, and yield, quality and
sustainable development can be ensured.