How to cut the buds of spring rose
As the spring breeze blows, rose buds and cuttings usher in their golden age. This ornamental plant, known as the "Queen of Flowers", can retain the excellent characteristics of the female parent through tender cuttings, and the survival rate can reach more than 85%. Mastering scientific breeding methods can make the courtyard bloom with more rose fragrance. The best cuttage period during the golden time for rose buds is when the temperature difference between day and night is stable in the range of 12-25℃, that is, from mid-March to late April, when endogenous hormones in the buds are active and cambium cells divide vigorously. It is recommended to choose the third day after consecutive sunny days to avoid the rainy season. The selection criterion for buds is to select semi-lignified buds of the current year with a diameter of 3-5 mm. Two pinnately compound leaves remain at the top, and the base is chamfered 45° to increase the water absorption area. Pay attention to the spacing between buds and eyes, and use 0.5cm spacing as high-quality cuttings. Cutting substrate preparation skills The substrate gold ratio uses a ternary substrate with perlite: vermiculite: humus =2:1:1, and the porosity is controlled at 35%-40%. High temperature steam sterilization is required before use, the EC value is adjusted to 0.5-0.8mS/cm, and the pH value is maintained at 6.0-6.5 slightly acidic environment. Water control key points: Pour thoroughly root-fixing water 12 hours before cuttage to make the water content of the substrate reach 60%-65%. Use an intermittent spraying device to keep the air humidity above 85%, and maintain the water film state on the leaves for 3-5 hours a day. The fully analytical disinfection and sterilization plan for pre-treatment of tender shoots uses composite disinfection of 50% carbendazim 800 times solution +0.1% potassium permanganate, and the soaking time is strictly controlled at 15-20 seconds. After treatment, it needs to be left in the air for 30 minutes until the incision forms a protective layer of callus. Scientific use of root promoters suggests using IBA indole butyric acid at 500ppm for quick dipping treatment, and mixing it with NAA naphthylacetic acid at a ratio of 3:1 has a better effect. The treatment depth is 1- 1.5 cm from the base of the cuttings, and the time is no more than 5 seconds. Key steps in cuttage operation The precise cuttage technique uses the "three-finger positioning method": the thumb and index finger fix the cuttage, and the middle finger guides the depth of the soil. Inclined at an inclination angle of 15°, the depth of burial is 1/3-1/2 of the length of the cuttings, and the reasonable density of plant spacing is maintained at 5× 5 cm. Environmental control tips Build a small arch shed to maintain the temperature at 22-25 ° C, and use it with a 70% sunshade net to adjust the light. Ventilate once a day in the morning and evening for 20 minutes each time. The light intensity was gradually increased on the 7th day to induce root development.
After systematic tender cutting management, white new roots can be seen in about 15-20 days. After the new shoots have grown 3 true leaves, the seedlings can be tempered and transplanted. Mastering these key technologies will allow each rose bud to transform into an independent new plant, adding infinite vitality to the garden.