Breeding method of Rhododendron yunjin
As a unique alpine flower in China, Rhododendron yunjin is popular among gardening enthusiasts with its layered petals and elegant tree shape. However, many people often encounter problems such as poor flowering and withered leaves during the breeding process. This article will systematically analyze the key points of maintaining rhododendrons and help you create a courtyard landscape with flowers. 1. Key points of environmental control, temperature and humidity balance rule. The original altitude of Rhododendron yungei is 800- 1,600 meters. When maintaining, it is necessary to simulate its original environment: ·The temperature is best to keep 15-28℃. In summer, it is necessary to shade and spray to cool down if it exceeds 32℃. In winter, it is recommended to maintain indoor wintering. Air humidity is controlled at 60-75%. Light management skills can be adjusted through tray water storage method to follow the principle of "soft light in spring and autumn and shade in summer":·From March to May, receive 3 hours of direct light in the morning. From June to August, use 50% sunshade net for protection. The flowering period is appropriately extended to 6 hours per day. Daily maintenance practice, scientific water and fertilizer plan adopts "see dry and wet + thin fertilizer and frequent application" strategy: ·Irrigation thoroughly every 3 days in spring and autumn, using acidified water with a pH of 5.5 -6.5·Change to permeating once a week in summer and winter·Apply the special fertilizer for rhododendron diluted 2000 times every half of the month during the growth period. The cultivation method of Rhododendron yunjin cultivation practices Master the principle of "three changes and three no changes":·Timing of pot change: Complete within 30 days after flowering·Substrate formula: peat soil: pine needles: perlite =5:3:2·Root trimming standards: Retain 1/3 of the original soil mass and cut off the old roots. 3. Advanced propagation techniques. The whole process of cuttage propagation. Cutting selection: Select semi-lignified new shoots and retain 2 bud points. Rooting treatment: IBA 500ppm quickly dipped in the base for 3 seconds. Maintenance and management: Maintain 85% humidity, transplant after 60 days. 4. Comprehensive disease prevention and control system Establish a three-level protection mechanism: ·Prevention: Spray 800 times of mancozeb solution every month·Control: Use difenoconazole for leaf blight, and use myclozil for rust. Recovery: Add seaweed to enhance resistance after disease