Early leaf quercus robur seedling breeding technique

The invention provides an early leaf quercus robur seedling breeding technique which belongs to vegetative propagation testing. A pith cambium grafting method (a butt-joint method) is adopted to enable the surviving rate of a grafted seedling to be greatly improved, an early leaf quercus robur optimal strain is adopted in a scion, a quercus robur seedling surviving through grafting can maintain the characteristic that germination and leaf spreading of the early leaf quercus robur optimal strain are quick, and the defect that a quercus robur cannot serve as a landscaping tree due to the fact that germination in spring is late is successfully overcome. At present, early leaf quercus robur seedling breeding has significant effects, and the early leaf quercus robur can serve as a city high-quality greening tree to be popularized and used.