Macadamia nut green branch grafting method

Abstract

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.

Description

technical field [0001] The invention relates to the field of agricultural science and technology, in particular to a method for grafting green branches of macadamia nuts. Background technique [0002] At present, macadamia nuts belong to the family Prateaceae, and the genus Macadamia ( Macadamia ), a perennial evergreen tree fruit tree, native to Queensland and New South Wales, Australia, is a tropical and subtropical dried fruit tree species with high economic value in the world. Macadamia nuts are rich in nutrition and have the reputation of "Queen of Dried Fruits". It is mainly produced in the United States, Australia, Kenya and other countries. my country introduced it from Australia in 1980 and tried it in Zhanjiang South Asia. In 1990, Guizhou Province introduced the observation from South Asia for the first time, and its adaptability, stress resistance, and high yield performance were good. It takes 8-10 years for macadamia seedlings to bear fruit. Grafted seedlin...

AI Technical Summary

Problems solved by technology

In order to speed up the breeding of grafted macadamia seedlings and meet the needs of its industrial development, the author conducted a macadamia nut grafting seedling experiment from October 2006 to 2011. Hard branch grafting seedlings were raised, and the rootstock cultivation time was not less than 18 months. From rootstock cultivation to out of the nursery It takes 30 months, and the survival rate is as high as 80%. Although the rootstock cultivation time is short, it is 20 months shorter than hard branch grafting, and the survival rate of grafting can reach 90%, but the rootstock is very strict. The seedlings are old, the woody degree is high, the nutrient consumption in the cotyledons is high, and the survival rate of grafting is low; the rootstock seedlings are young, and the tissues are tender, and it is easy to damage the young shoots and break off the seedlings during the process of taking anvils, washing the anvils, grafting, and planting seedlings. Petiole affects graft survival rate