The Method of Grafting Chinese Rose onto Willow Trees
Grafting plants is an important technique for horticultural improvement, and choosing the right rootstock is the key to success. The method of grafting Chinese roses onto willow trees circulating online contains serious misconceptions. This article will delve into the principles of grafting and explain the correct operation process for grafting Chinese roses.
Principles of Compatibility between Families for Grafting Chinese Roses
Genetic Restrictions of Plant Families
The Salicaceae family (willow trees) and the Rosaceae family (Chinese roses) have chromosomal differences, and their vascular bundles cannot heal effectively. Experimental data show that the survival rate of inter-family grafting is less than 0.3%, and even if temporary healing tissue forms, it will necrotize within 3-6 weeks.
Standards for Choosing Quality Rootstock
Wild roses as rootstock have significant advantages: 1. Strong resistance: tolerant to -15°C low temperature and 40°C high temperature 2. Developed root system: main root depth can reach 2.5 meters 3. Good affinity: the healing rate with Chinese roses is 92%.
Full Process Analysis of Grafting Chinese Roses
Best Operation Period
It is recommended to choose the period of March to April when the sap is flowing or September to October when nutrients are flowing back, as the cambium cells are active during these times, along with environmental parameters of 15-25°C temperature and 60-75% humidity.
Professional Grafting Techniques
1. Rootstock treatment: Make a 45° diagonal cut on the 1-2 cm diameter main trunk, with a cut length of 3-4 cm. 2. Scion preparation: Retain 2-3 plump bud points on semi-lignified branches. 3. Grafting operation: Use the double-tongue grafting method to increase the contact area and wrap with elastic membrane tape in multiple layers.
Key Points for Post-Grafting Maintenance
1. Shading treatment: 70% shading is required for the first 15 days. 2. Humidity control: Keep the grafting joint moist but not waterlogged. 3. Nutritional management: Start applying 0.1% phosphorus-potassium liquid fertilizer 20 days later.
Mastering scientific grafting methods can increase the survival rate of Chinese roses to over 85%, and it is recommended to update the rootstock every year to maintain plant vitality. The correct family matching and standardized operations are the fundamental ways to achieve horticultural improvement.