1. Fertilizer: in case of sufficient base fertilizer, it is generally unnecessary to apply top dressing. If it is found that the leaves of plants are small and yellow, it is necessary to apply top dressing properly. Secondly, before it sprouts every spring, apply the rotten cake fertilizer.
2. Temperature: the environment temperature suitable for its growth is between 20-30 ℃. If it is over 40 ℃ in summer, it will grow slowly. If it is below 15 ℃ in winter, it will stop growing.
3. Soil: water shield usually grows in paddy field, and the depth of water in paddy field needs to be 20-60cm. The requirement of water quality is relatively high. It's better to breed in a clean place. The soil is better to be rich in nutrients.
4. Light: when cultivating water shield, it's better to be in a better position. Its growth is more dependent on light, it needs sufficient sunlight to do photosynthesis, so it can grow better.
1. Propagation: the propagation of Ulva is generally carried out by cutting, because its seeds are not easy to germinate, in order to have a better harvest. The most common way is cutting. It's best to do it in March and April in spring.
2. Transplanting: water shield can be transplanted in all seasons of the year, but the survival rate of transplanting is relatively high in spring, and it is better from late March to mid April
1. Pest: because it is cultured in water, snails are its common natural enemies. Generally, it starts from the water and feeds on the stems and leaves of plants. In the early stage of discovery, it needs to spray with 800 times liquid of 90% crystal trichlorfon.
2. Disease: the common disease is leaf rot, which is harmful to water shield. Generally because the water quality is poor or the machine fertilizer is not rotten, it is OK to clean or change the water quality in time
1. Edible or not: water shield can be used for eating. At present, there are many areas in our country that are widely planted, which is generally seen.
2. Toxic or not: there is no toxicity in Ulva, because it can be eaten and has certain economic value, so the cultivation is very extensive.
