Semi-annual walnut stock and cultivating method of semi-annual stock walnut seedlings

Abstract

The invention discloses a walnut semi-annual stock and a cultivating method of semi-annual stock walnut seedlings, belonging to the technical field of forest cultivation. The cultivating method of the semi-annual walnut stock comprises the following steps of: with same year seeds of a Sigillate walnut seedling tree as seeds for stock cultivation, treating the seeds, sowing the seeds into a ground bed in autumn in the same year, covering mulching films and constructing a plastic film arched shed, and controlling the temperature in the shed to 16-20 DEG C before euphylla of the seedlings is expanded, covering a sunshade net with the light transmittance of being 20-30 percent, wherein the soil water content is 40-50 percent; and after the euphylla of the seedlings is expanded and before graft is carried out in February and March of the next year, controlling the temperature in the shed to 15-25 DEG C, the light transmittance of the sunshade net to 40-60 percent and the soil water content to 40-60 percent. The semi-annual stock cultivated by using the cultivating method is used for cultivating the semi-annual stock walnut tree seedlings through grafting. The cultivating method disclosed by the invention is short in cultivation time, the average outplanting rate of the walnut seedlings is up to 87.7 percent which is increased by 25.5-67.4 percent in contrast, and the seedling raising cost is reduced in comparison with that of a bud stock.

Description

technical field [0001] The invention relates to the technical field of tree cultivation, in particular to a method for cultivating walnut stock and walnut seedlings. Background technique [0002] Juglans is a world-renowned economic forest tree species. Yunnan Province is one of the origins of walnuts and the main production area of ​​walnuts in the country. Its planting area and output account for about two-thirds of the country. Walnut is a "leading industry" that promotes the poverty alleviation of farmers in mountainous areas and drives the overall development of the rural economy in mountainous areas. It has become a pillar industry of forestry in Yunnan Province. In recent years, in addition to the large demand for walnut seedlings in this province, it has also been supplied to surrounding provinces such as Guizhou, Sichuan, Chongqing, and Guangxi. The annual demand for walnut seedlings is about 50 million. Therefore, the development of walnut industry cultivation is b...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the high cost of cultivating anvils in the sand bed for raising seedlings with existing bud anvils, the position of the grafting interface of the cultivated stock is relatively low, the grafting interface is easily buried under the soil when planting seedlings, affecting growth, and the rate of walnut seedling emergence from the nursery is low. And overcome the defects and deficiencies that the rootstock cultivation and walnut seedling cultivation time in the existing walnut rootstock grafting and grafting cultivation are longer, and the walnut seedling emergence rate is low. , the cultivation method of walnut half-year stock with high rate of emergence of walnut seedlings and cost reduction and the cultivation method of half-year stock walnut seedling

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