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If peony and peony are bloomed in the summer (mid-May to late August), the traditional technique is to take peony and peony seedlings from the field before germination, put them in cold storage at low temperature, and then remove them timely to make them in the artificial climate. The room is in full bloom on the scheduled flowering date. Although this method can make peony and peony bloom at the same time, there is a big gap between the flowering quality and the natural flowering period. The flowering rate is low, the flower color is light, the flowers are small, the petals are few, and the leaves are small and thin. Use artificial climate room to verify this method.
In mid- and late April, when individual flowers of the same species begin to bloom, select the plants that meet the requirements in Daejeon. When selecting the seedlings, the buds on the same plant should be of the same size, and the development stage should be in the peach or peach stage so that they can be opened at the same time to achieve the best flowering effect.
The artificial climate room is ready, and the cold storage is fumigated with chlorothalonil aerosol 2 to 3 days in advance and fumigated once every 15 to 20 days thereafter. One day in advance, the temperature in the cold room was lowered to the set temperature, and the plants were placed in pots and immersed in water as soon as possible. They were put into the cold room as soon as possible, and were placed neatly and orderly, leaving a management channel. The temperature in the cold room is maintained at 2°C to 4°C, and the air humidity is maintained at about 95%. The temperature and humidity in the cold room cannot fluctuate frequently. The stable temperature and humidity are the key links for the successful cold storage of peony and peony. After peony and peony enter the cold storage, although they are in a low-temperature environment, they will consume certain nutrients and moisture. Therefore, every 20 to 30 days after storage, appropriate amounts of liquid fertilizer should be poured into the pots.
The flowering period of each flower will have a certain period of time. The temperature during this period is the most suitable for its growth. The natural flowering period of peony is in the middle or late April. The natural flowering period of peony is in late April or early May. Nowadays, the demand for flowers is very large. How to cultivate flowers in the off-season needs to be explored and researched.