Florescence Control of several Flowers

The rise of flower industry is an important symbol of China's economic and social development. This paper introduces the florescence control techniques of several main flowers for reference.

Chrysanthemum is a short-day plant, and flower buds differentiate only under short-day conditions. Therefore, the flowering period can be controlled by controlling the length of sunshine, so it should blossom under the condition of long sunshine and short-day treatment should be carried out. The plants are cultivated in advance. When the twigs grow to 9mur12cm, they are only given 10 hours of light every day, and the rest of the time, they can be covered with black cloth or black plastic film (it is suitable for the morning and evening, because it is overheated at noon). The effective feeling of short-day light is at the top, so the upper part must be completely dark, while the base is lax. The chrysanthemums can form buds after about 40 days of treatment with 30Mel, which can be removed later and the management of fertilizer and water can be strengthened. In order to delay flowering, late flowering varieties can also be selected and the method of prolonging sunshine is used to prevent the formation of buds and delay flowering.

Peony to blossom in advance to the Spring Festival, should choose Jade Powder, Yulou Spring, Peach Blossom Red and other varieties that bloom early and frequently. 5-6 years old, strong plant growth, after defoliation, put the peony on the pot, try not to hurt the root system, put it in a place where the temperature is not high, fertilize once, and then move to a greenhouse with a room temperature of about 25 ℃. Water was sprayed on the plant 6 times a day, and only branches were sprayed after emergence of leaves. When the bud appears color, transfer to the low-temperature greenhouse, so that the florescence can be maintained for about 20 days. If you want to postpone the normal florescence of peony, you can use the method of cold storage to prolong its dormancy period. The temperature should be kept above 0 ℃, there should be weak light in the room, and the room should be irradiated for 4 hours a day.

Most lotus flowers bloom from June to August. In order to blossom on National Day, early flowering varieties can be cultivated to blossom in about 50 days. It was replanted for the second time in mid-July so that it could blossom on National Day. If the new lotus root of the late flower variety is to be formed in early September and planted in a greenhouse above 22 ℃ at room temperature, the lotus can bloom in winter.

Rhododendron carries out flower bud differentiation in autumn. In order to make it blossom in winter, it can be cultured in greenhouse at a temperature of 20 ℃ and 25 min, and water is often sprayed on the branches and leaves, so that luxuriant flowers can bloom in one and a half months. If you want to blossom in New Year's Day. Before entering the greenhouse, the plants were treated with low temperature of about 0 ℃ for 2 weeks. In order to delay the flowering of rhododendron, keep it at low temperature all the time, keep it in the cold room and keep it warm for 1 ℃ 3 min. If it is preserved for a long time, there should be light in the room. The storage time should be 15 Murray 20 days before flowering.

Camellias can promote or delay flowering by adjusting the temperature. In order to delay flowering, late flowering varieties should be selected. Before entering the storage, the whole plant should be bandaged to protect against cold. The whole plant should be placed in the cold storage of 2 Murray 3 ℃. The weak light should be seen for about 6 hours every day, and the treatment time is about 1 month, which can achieve the purpose of delayed flowering. Spring flowering varieties, after meeting the requirements of low temperature. As long as it is heated, it can blossom early.

Poinsettia is a typical short-day plant, so the flowering period can be controlled by adjusting the duration of light. In order to make it blossom on National Day, it can show beautiful red bracts in late September by treating it with short sunshine for about 40 days from the first ten days of August. If you want to blossom in the New year, you don't have to hide the light. After being moved to the greenhouse for cultivation, the bracts naturally turn red. When you want to delay the florescence, you can use the light to extend the lighting time to achieve the goal.