Shaping and trimming method of crowns of pear trees

Abstract

The invention relates to a shaping and trimming method of crowns of pear trees. The crowns are trimmed into a structure of two layers of main branches, wherein each layer of main branches comprises two main branches facing south and north, and lateral branches are left at two sides of the main branches in the horizontal direction. The shaping and trimming method has the advantages of facilitating flower bud differentiation, increasing effective photosynthetic accumulation, enhancing wind resistance, and obviously improving the commodity quality of fruit of a single-layer planar pergola shaping method; moreover, the shaping of the crowns is quick; the cultivation of crown structure can be completed to enter the early fruit period 3 years after the planting in general; the yield of a single plant can be controlled to be 6-10kg, and increases year by year; meanwhile, trimmed crowns do not contain sub-main branches; the trimming method is simple, and is easy to master; the work space of the flower and fruit management of a pear orchard can be controlled; labor and force are saved; the labor efficiency is improved; and the management cost of the orchard is reduced; in addition, the method is suitable for a flat land or a gentle slope landform undulation, and is particularly suitable for a gentle slope with the landform undulation or a slope land with the slope of less than 15 DEG.

Description

technical field [0001] The invention relates to a pear tree crown shaping and pruning method, which belongs to the field of fruit tree cultivation. Background technique [0002] Pear tree single-layer planar scaffolding is a pear tree shaping method commonly used in pear tree production in Japan and South Korea, that is, the crown of pear trees is reasonably controlled on the horizontal shelf surface 1.70-1.80m above the ground for flower and fruit management and new shoots. control. Pear trellis shaping can promote flower bud differentiation, increase effective photosynthetic accumulation, enhance wind resistance, significantly improve fruit commodity quality, and promote early high yield. [0003] In the mid-1990s, scaffolding was introduced in China, and the problems in the promotion process were: the main branches, sub-main branches, side branches (fruiting branch groups) and new shoots of the single-layer planar scaffold crown of pear trees are distributed on the same ...

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Problems solved by technology

[0003] In the mid-1990s, scaffolding was introduced in China, and the problems in the promotion process were: the main branches, sub-main branches, side branches (fruiting branch groups) and new shoots of the single-layer planar scaffold crown of pear trees are distributed on the same plane. The plastic pruning method is highly specific, and it is quite different from the traditional domestic pear tree pruning and pruning methods such as evacuation and stratification in tree crown cultivation. It is difficult for fruit growers to correctly grasp the plasticity of single-layer plane scaffolding without years of training. The pruning method is difficult to achieve the high-quality and efficient cultivation of pear trees; since the pear orchard management operations are carried out at a height of 1.70-1.80m or more, it affects the improvement of labor efficiency for scaffold pear orchards where women and the elderly are the main labor force; The crown structure takes a long time to cultivate, and generally enters the initial fruiting period 5 to 6 years after planting

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