Macadimia nut seedling autumn grafting technology

Abstract

The invention discloses a macadimia nut seedling autumn grafting technology. Lignified branches processed through girdling are used as scions, nutrition bag seedlings normally growing for 10 months or longer or nutrition bag seedlings with the diameter larger than or equal to 8 mm are used as stocks, and grafting is performed with a cutting and grafting method. The lignified scions processed through girdling are grafted onto the nutrition bag stocks, so that the cell viability is low, callus can be formed fast, reserved leaves can perform photosynthesis to produce nutrient substances, and the nutrient substances are provided to cuts for healing; therefore, the survival rate of the grafting technology is increased by 10 percent to 15 percent compared with ordinary grafting, and the grafting survival rate reaches up to 85 percent. Besides, autumn grafting and spring grafting are combined for use, and additional grafting can be performed to make up for seedlings which are dead after grafting. Through the technology, the survival rate of macadimia nuts is greatly increased, the seedling breeding period is shortened, the seedling cultivation cost is reduced, and the grafting period of time is prolonged. Autumn grafting and spring grafting are combined for use, additional grafting can be performed to make up for the dead seedlings, and the macadimia nut seedling autumn grafting technology is suitable for cultivating seedlings on a large scale by enterprises and provides technological support for development of macadimia nut seedlings.

Description

technical field [0001] The present invention is designed in the field of agriculture and forestry science and technology, specifically a technique for grafting macadamia seedlings in autumn. Background technique [0002] Macadamia belongs to the family Prateaceae (Prateaceae), macadamia (Maceadamia), perennial evergreen tree fruit trees, native to Queensland and New South Wales, Australia, and 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 1979 and tried it in Zhanjiang South Asia. In 1980, Yunnan Province introduced and tested macadamia nuts. It takes 8-10 years for macadamia seedlings to bear fruit after planting, 3-4 years for grafted seedlings, and 5-6 years for early fruit bearing. After the macadamia nut is i...

AI Technical Summary

Problems solved by technology

According to relevant records, the rootstock cultivation time of traditional hard branch grafting is not less than 18 months, and it takes 30 months from rootstock cultivation to out of the nursery, and the survival rate can reach up to 80%. Bud stock grafting seedling cultivation, although the rootstock cultivation time is short, It is 20 months shorter than hardwood grafting seedlings, and the survival rate of grafting can reach 90%, but the requirements for rootstocks are very strict. The rootstock seedlings are older, and the woodiness is high. The cotyledon consumes more nutrients, the survival rate of grafting is low, and the rootstock seedlings are young. Young tissues are easy to damage young shoots and break cotyledon petioles during the process of taking anvils, washing anvils, grafting, and planting seedlings, which will affect the survival rate of grafting