Dwarfing early-production domestication method of fine-fragrance walnuts

Abstract

The invention discloses a dwarfing early-production domestication method of fine-fragrance walnuts. The method comprises the following steps: 1) young trees: A, carrying out grafting to control growthof trees; B, selecting buds to control the growth quantity and direction of branches; and C, carrying out shaping to control the tree shape; and 2) adult trees: A, carrying out pruning and shaping tocontrol the tree shape; and B, carrying out girdling to promote the fine-fragrance trees to enter a reproductive growth period in advance. According to the method, tree growth is controlled through removing branches in the young tree period, the growth quantity and direction of the branches are controlled through bud selection, and the tree shape is controlled through shaping, so that the young trees are rapidly formed, distribution of the branches is reasonable, ventilation and light transmission are good, dwarfing is effectively realized, and meanwhile, conditions are provided for high yield of adult trees. Then, the tree shape is sequentially controlled through pruning and shaping in the adult tree period, and the fine-fragrance walnut trees are promoted to enter the reproductive growth period in advance through girdling and the like according to actual conditions, so that fruit setting is achieved in advance, quality is ensured, and the yield is increased.

Description

technical field [0001] The invention belongs to the technical field of domestication of walnut trees, and in particular relates to a dwarf and premature domestication method of fine fragrant walnuts. Background technique [0002] Xixiang walnut is one of the important high-quality walnut strains in Yunnan Province. It is distributed in a large range of altitude (1400-2200m) and has excellent quality (full kernels, easy to harvest kernels, and whole kernels are preferred, with a kernel yield as high as 56%; strong flavor , with a fat content of 71.9%), is the main walnut strain traditionally cultivated in Yunnan Province, and is mainly planted in Baoshan, Dehong and other places in Yunnan Province. The fine fragrant walnut tree has a strong momentum, a half-open tree posture, and a semi-spherical crown. The Xixiang walnut tree is tall, with a medium and short branch rate of 96.9%, and the fruit branches are short branches. In the past, people didn’t know enough about walnut...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, although there have been researches on the dwarfing and shaping of Xixiang walnut, due to lack of management experience, most growers have extensive management and cannot scientifically carry out plastic pruning and premature domestication, resulting in uneven density and poor growth after planting. , late results, low yield, poor quality, low economic benefits

For a long time, there has been a lack of research on the management of fine walnuts, and growers have even cut off the ends and pruned directly, resulting in too many thin and weak branches of walnuts and no fruit.

[0004] In addition, due to the early production of ordinary fine fragrant walnuts in 9-12, and the abundant production in 2013-15, the growth cycle is too long, the economic benefits are shortened, and the investment time and management costs are increased.

Moreover, due to the tallness of the walnut trees, in the Mangshi area, only about 8 trees can be planted per mu of ordinary walnuts, and the yield is not good.

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