1、 Curing method

1. Fertilizer: if the base fertilizer is sufficient, topdressing is generally not required. If it is found that the leaves of the plant are small and yellow, it is necessary to apply topdressing appropriately. The second is to apply rotten cake fertilizer before it sprouts every spring

2. Temperature: the ambient temperature suitable for its growth is between 20-30 ℃. If it exceeds 40 ℃ in summer, it will grow slowly, and stop growing when the ambient temperature is lower than 15 ℃ in winter

3. Soil: Brassica Lactuca generally grows in paddy field, and the water depth of paddy field needs to be 20-60cm. The requirements for water quality are relatively high. It is best to breed in a place with clean water quality, and the soil should be a little nutrient rich

4. Light: when breeding Ulva, it's best to be in a place with good light. Its growth depends greatly on light. It needs sufficient sunlight for photosynthesis, so that it can grow better

2、 Breeding skills

1. Propagation: the propagation of Ulva lactuca is generally carried out by cutting, because its seeds are not easy to germinate, in order to have a better harvest. The most commonly used method is cutting, which is best carried out in March and April in spring

2. Transplanting: Ulva can be transplanted all year round, but the survival rate of transplanting is relatively high in spring, and it is better from late March to mid April

3、 Diagnosis and treatment problems

1. Insect pests: because it is cultured in water, snails are its common natural enemies. Generally, it will start from the water and eat the stems and leaves of the plant. In the early stage of discovery, it needs to be sprayed with 800 times of 90% crystal trichlorfon

2. Disease: its common disease is leaf rot, which does great harm to Ulva. Generally, it is caused by poor water quality or the mechanical fertilizer used is not rotten. It is OK to clean the water quality or change the water in time

4、 Other issues

1. Edible: Brassica Lactuca is edible. At present, it is widely planted in many areas in China, which can be seen generally

2. Whether it is poisonous: Brasenia Lactuca has no toxicity, because it can be eaten and has certain economic value, so it is widely cultivated