Method for promoting late-fruiting walnut tree to fruit earlier and increase production through spiral girdling

Abstract

The invention discloses a method for promoting a late-fruiting walnut tree to fruit earlier and increase production through spiral girdling. According to the method, a walnut tree meeting the following requirements is chosen: a J. sigillata Dode tree grows for four to twenty years, a tree body is a transplanted grafted seedling, the distance between the base of a trunk and the branching position of a branch closest to the ground is larger than 1m, annual growth of young sprouts is 50cm in length, vegetative branches account for more than 60 percent of the branches of the whole tree, and the J. sigillata Dode tree body does not fruit within four to ten years. Spiral girdling is performed from the base of the trunk from bottom to top in fifteen to twenty days before the beginning of spring, the depth of spiral girdling just reaches xylem, the width of spiral girdling is one-tenth of the diameter of the trunk, the spiral pitch ranges from 10cm to 20cm, and the height of spiral girdling ranges from 60cm to 80cm. Compared with a grafted walnut tree naturally growing for seven to eight years, by means of the method, the J. sigillata Dode tree fruits two to three years earlier, and the total fruit amount of one tree in two years increases by 2.6 times to 8 times. Compared with a grafted walnut tree cultivated conventionally, the total fruit amount of one tree in two years increases by 2.6 times to 8 times.

Description

technical field [0001] The invention relates to the technical field of tree cultivation, in particular to a method for early fruiting and increasing production of walnuts. Background technique [0002] Juglans is a world-renowned economic forest tree species. Yunnan Province is one of the origins of walnuts and the main walnut producing area in the country. Its planting area and output account for about two-thirds of the country's total. 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. By the end of 2013, the walnut planting area in the province reached 39 million mu. [0003] There are more than 20 species in the genus Juglans, which are distributed in Asia, Europe, and America. There are 5 species native to my country, namely walnut (J.regia L), soaked walnut (J.sigillata Dode), wa...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of late fruiting and low yield in the current soaked walnut (J.sigillata Dode)

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