Macadamia nut green branch grafting method

The invention discloses a macadamia nut green branch grafting method. The method comprises enabling half-lignified green branches with 1/2 of leaf blades to serve as cion, enabling normally-growing nutrition bag seedlings without limiting seedling ages to serve as rootstock, adopting a cut-grafting method to perform grafting, and after grafting, planting the rootstock in a plastic film arched shed under a sunshelter to perform cultivation and management. The half-lignified green branches serve as the cion to be grafted to the nutrition bag rootstock seedlings. Due to the fact that lignification of the cion is low, tissue cells are active, calluses are formed quickly, the reserved leaf blades can make nutrient substance through photosynthesis so that the nutrient substance is supplied to grafting openings for healing, the macadamia nut green branch grafting method improves grafting survival rate by 15-20% in comparison with a hard branch grafting method, and the grafting survival rate is over 95%. The grafting survival rate of macadamia nut is greatly improved, a nursery stage is shortened, seedling cultivating cost is reduced, and the grafting survival rate is not limited to time and rootstock roughness. Besides, in the green branch grafting process, regardless of the seedling ages, as long as the half-lignified green branches are available, the green branches can be grafted all the year round, and the macadamia nut green branch grafting method is suitable for multiple effects of massive industrial seedling culture and provides technological support for macadamia nut seedling culture development.