Rieger Begonia is a kind of ornamental flower with rich colors and beautiful flower forms. The flower of Rieger Begonia is delicate and beautiful, with large petals, which is very suitable for pot culture and display at home. So how do liger crabapple grow? What's the best way to breed? What should we pay attention to when breeding Rieger Begonia? Please read on with me with questions!
The best breeding time is the end of autumn and the beginning of winter.
The best growing soil: Rieger Begonia likes good drainage matrix, such as coconut bran, peat soil, vermiculite, perlite, carbonized bark, etc., 80% high fiber peat soil and 20% perlite are recommended.
Requirements for growth humidity: the growth of Begonia Rieger needs high relative air humidity, which should be controlled at 80% - 85%.
The optimum growth temperature is 18 ℃ ~ 22 ℃. The key point of family maintenance is to keep warm in winter, and the minimum temperature shall not be lower than 15 ℃.
The best growing light: Rieger Begonia is a quantitative short sunshine plant, which needs more than 70% shading when the temperature is above 25 ℃ in summer. After the end of October, the light of Rieger Begonia can be enhanced properly. After the middle of November, the short day treatment should be carried out to make him fully accept the light, so as to ensure the growth and flowering.
Notes on breeding Rieger begonia with pink Rieger Begonia: fertilizer application: Rieger Begonia mainly uses nitrogen fertilizer for small seedlings to promote their growth and development. With the growth of plants, the amount of nitrogen fertilizer should be reduced, the content of phosphorus and potassium fertilizer should be increased gradually. Before flowering, the amount of fertilizer should be increased, and the foliar fertilizer can be sprayed properly. The concentration of foliar fertilizer should not be too large, which should be controlled between 1% and 2% The spray should be uniform, and the positive and negative sides of the leaf should be sprayed. Rieger Begonia is very sensitive to the lack of nutrients or too much nutrients. Therefore, it should be applied thinly. Compound fertilizer with the ratio of 15:5:15 or 20:10:20 can be used to maintain the pH value of the solution between 5 and 6. According to the nitrogen content of dissolved liquid fertilizer, the concentration of nitrogen applied once a week is 250-300 ppm; the concentration of nitrogen applied once a week, three times, four times or every day is 100-200 PM. At the same time, the special fertilizer of Rieger Begonia can also be selected.
Key points of watering: usually, watering for Rieger Begonia depends on the climatic conditions. Generally, it evaporates quickly in summer and requires more water. Watering should be done in the morning or evening, and the times of watering depends on the wettability of the basin soil. In winter, the water should be watered at noon on a sunny day as much as possible, and the water temperature should be close to the indoor temperature, so as not to cause the root to be stimulated and die due to the low water temperature. To increase air humidity, it is better to spray the mist to the leaf with a humidifier or spray. See that the leaves are moist, but do not spray the water mist onto the flowers.
Pruning tips:
1. During the growth period of Begonia Rieger, it is necessary to pick the center to promote the germination of the lateral branches of the plant, so as to achieve the plumpness of the plant type. In addition, it is necessary to remove the redundant flower buds in time, so as not to cause a large consumption of nutrients and affect the development of other flowers. 2. After autumn cool, Begonia riguensis began to sprout new branches from the base. When it reached a certain height, the old branches were cut off from the base with a sharp knife. At the same time, the amount of water was increased to promote the growth of Begonia riguensis. When the new branches are basically set, three new branches will be kept in each pot, and the rest will be cut off, so as to concentrate nutrients and make Rieger Begonia take shape as soon as possible.
Basin soil replacement: the purchased basin soil of liger Begonia meets the requirements, so the basin can not be replaced in the first two years.
Key points of propagation: Rieger Begonia is propagated by sowing, cutting or tissue culture.
1. Sowing method. Because the seeds of Rieger's Begonia are very small, the small seed sowing method must be adopted. The seeds of Rieger's Begonia are basically imported, including coated seeds and non coated seeds. As coated seeds can be sorted, they can be used as hole seedling tray, while non coated seeds can only be used as seedling tray. The sowing matrix is 1 part of peat soil and 1 part of vermiculite powder, which are smashed and sterilized, then mixed and stirred to form a semi wet state for use. The peat soil can not be used in dry state because of its water repellency and no water inflow. When sowing, put the substrate in the seedling tray, and then water it with a watering can.
2. Cutting method. At the end of autumn and the beginning of winter, when the plants are pruned and shaped, the new branches can be used as cuttings. Liger Begonia can be planted in branches or leaves. When the branches are inserted, the length of the branches shall be appropriate, and the lower part of the branches shall be cut into horseshoe shape with a blade; when the leaves are inserted, the mature leaves with vigorous growth shall be selected, and the lower part of the petiole shall be obliquely cut with a blade. The cutting medium is vermiculite powder or plain sand. The polluted medium should be disinfected and reused. After the cuttings are inserted, they should be watered and permeable, but no water should be accumulated on the leaf surface. And cover it with plastic film, place it at the scattering light place, ventilate properly, avoid high temperature. It will take about three weeks for the cuttings to root. When new leaves appear, it means that they have roots. There is no underground tuber in the plant obtained by branch cutting. After 3 weeks of leaf insertion, fibrous roots can also grow in the lower part of the petiole, but it will take another month and a half to grow adventitious buds from the lower part of the petiole, and gradually unearthed.
3. Tissue culture. Tissue culture is a rapid method to obtain a large number of flowers and seedlings. In the season of growth and migration, a large number of virus-free seedlings can be obtained by using well-developed leaves as explants and through non-toxic explants culture, subculture and rooting culture in a certain medium. This method has a large investment and can only be used in mass production.
Pest control: Family Cultivation of Begonia has fewer pests and diseases. Regular spraying of fungicides to prevent bacterial soft rot and powdery mildew can be sprayed with streptomycin 200ug/g 1000 times liquid. In order to prevent pesticides from polluting the air, home-made pesticides can be self-made, and the control effect is good. There are 2 common ways: (1) ginger juice and water, and spray at 1:25 ratio. Control the germination of spores of soft rot and other pathogens. (2) Dry pepper 50g, water 50 times, boil for half an hour, take the supernatant and spray it on the leaf surface, which can effectively prevent aphids, red spiders and acronychids, inhibit the growth of plants, and make new leaves hard or linear.
The experience of cultivating Rieger begonia with dew: 1. In the high temperature of summer, the growth of Rieger Begonia is slow or completely stagnant, and it is in the state of dormancy or semi dormancy. First, cut off the dead flowers and leaves, and cover 50% to 70% of the light; control the watering and keep the soil slightly wet, so as to prevent the root and stem from rotting caused by the overwetting of basin soil.
2. In winter, the Begonia is still in the period of growth and flowering. It should be placed indoors in the south facing sun, such as on the indoor windowsill, etc. In summer, in case of high temperature weather above 28 ℃, cooling measures shall be taken, such as putting into air-conditioned room or shading at noon.