Rose breeding methods
As a symbol of love and beauty, the maintenance of roses makes many gardening enthusiasts love and worry. To cultivate roses with full flower shapes and strong fragrance, you not only need patience and meticulous attention, but also master scientific and systematic cultivation methods. This article will reveal the secrets of professional maintenance of roses from environmental control to daily care. 1. Regulation of rose growth environment Temperature and light balance techniques The optimal growth temperature of roses should be controlled within the range of 15-25℃, and maintaining the temperature difference between day and night at 5-8℃ is more conducive to flower bud differentiation. Shade nets need to be used when the temperature exceeds 30℃ in summer, and when the temperature is lower than 10℃ in winter, it should be moved indoors for maintenance. It is recommended to receive scattered light for 4-6 hours a day, and a balcony facing east or southeast is an ideal location. The precise watering plan adopts the watering principle of "seeing dry, seeing wet": watering thoroughly every 3 days in spring and autumn, watering once in the morning and evening in summer (avoiding noon), and once a week in winter. You can insert your fingers into the soil 2 cm to detect humidity, and it is easier to control the watering amount in the weighted ceramsite pot. Special reminder: A 3cm drainage layer needs to be left at the bottom of the potted plant to prevent water accumulation. 2. Rose nutrient management The rose breeding method Scientific fertilization system Nitrogen, phosphorus and potassium (10-20-20) compound fertilizers are applied every 15 days during the growth period (March to June), and potassium dihydrogen phosphate foliar fertilizer is added during the bud appearing period. Recommended to mix organic fertilizer: bury decomposed sheep manure in spring and apply bone meal in autumn. Pay attention to applying thin fertilizer frequently, and control the concentration at 0.2%-0.3%. The ideal substrate formula for soil improvement strategy is garden soil + humus soil + perlite (5:3:2), and the pH value is maintained at 6.0-6.5. Add 10% coconut bran to improve air permeability when changing pots every year, and add sulfur powder to adjust pH. 3. Daily care, pruning and plastic techniques of roses, re-cut in spring to retain 3-5 main branches, leaving 2-3 bud points for each branch. Cut off the remaining flowers in time after flowering (keep the lower 5 leaves), and cut off the crossing branches and inward branches. Tools need to be disinfected with alcohol, and the incision is tilted 45° to avoid stagnant water. For pest and disease control, mancozeb and chlorothalonil are sprayed alternately every month to prevent diseases. Aphids are controlled with imidacloprid, and red spiders use avermectin. Self-made natural medicine: Garlic extract (1:20) repels thrips. 4. Advances in rose reproduction