Porphyra is neither a seed plant nor an angiosperm. It is a kind of algae alternating in the sea, and there are many kinds. Porphyra has two forms of reproduction, namely sexual reproduction and asexual reproduction.

Sowing date of laver

Laver can't spread without seeds. When planting, it can be raised in seawater, and it can survive and reproduce as long as there is enough light.

Porphyra seed planting

Porphyra likes the intertidal zone with big waves and rich nutrition. Usually, it can be planted with suitable light and temperature, and March-September is the peak season for planting every year.

1. In autumn, when the seawater drops to a certain temperature and begins to disperse, crustaceans can be collected. Synthetic fiber is put into the culture pond as the attachment matrix, so that crustaceans naturally attach to the surface. Because the release of crustaceans has a daily cycle, the release time is mostly between 10- 1 1 in the morning.

2. In order to germinate early, put the net curtain in a damp place and clean up the weeds around it in time. Rational fertilization, disease prevention and timely harvesting should be carried out in the leaf forming stage.

3. The arrangement of leaf-shaped aquaculture net curtain in sea area can be divided into semi-floating and full-floating raft. Semi-floating is suitable for shallow beaches, and full floating raft is mainly used in deep-sea areas. These two methods now use manual technology and occupy a major position in production.