1、 Curing method

1. Light management: during the maintenance process, the seedlings of Potamogeton crispus should avoid direct sunlight as far as possible. As it grows up, increase its illumination time. The average illumination time per day is 4.5-5.5 hours, which is conducive to its growth

2. Water quality selection: Potamogeton crispus is a perennial submerged herb, so it generally appears in ponds, paddy fields, ditches and rivers. Therefore, there are many requirements for nutrients in sediment. The pH of water body is generally slightly acidic to neutral, which is conducive to growth

3. Nutrient management: in the process of cultivating Potamogeton crispus, sufficient nutrients should be given. The sediment, water quality and nutrients need to be sufficient

4. Temperature management: the optimum growth temperature is about 15-20 ℃. If the temperature is appropriate, it will bloom from April to May and wither and rot in June

2、 Breeding skills

1. Cuttage: cuttage in the sediment. The nutrients in the sediment and water quality should be sufficient. Increase the water level in time, and pay attention to the seedlings to avoid strong light exposure. Generally, the cutting time can be in spring

2. Sowing: because it begins to blossom from April to may, the most suitable sowing time is autumn. It begins to germinate in autumn, and winter and spring belong to its growth period

3、 Diagnosis and treatment problems

1. Withered and yellow leaves: if the symptoms of withered and yellow leaves occur, it is likely that the water quality is unbalanced in pH, over acid, over alkaline, or excessive nutrition in the water, which is easy to lead to withered and yellow leaves. The pH should be adjusted in time to maintain the nutritional balance

2. Rotten roots: if rotten roots occur in Potamogeton crispus, it is likely to be caused by insufficient oxygen in the water. Oxygen should be increased in time and light should be increased

4、 Other issues

1. Potamogeton is a perennial herb with sufficient vitamins and no toxic ingredients

2. Pruning and maintenance: because its aquatic plants reproduce very rapidly and spread all over the whole lake in a short time in a suitable environment, they need to be pruned every week to avoid excessive density