Pruning method for promoting flower bud differentiation of blueberries under open field substrate cultivation condition

Abstract

The invention discloses a pruning method for promoting flower bud differentiation of blueberries under an open field substrate cultivation condition. The pruning method is used for pruning blueberry plants within 10-15 days after blueberry fruits are picked in summer. The pruning method comprises the following steps of (1) pruning base growing branches, specifically, selecting 1-3 base growing branches with the branch thickness of 10 mm-30 mm as trunks for reservation; (2) conducting secondary branch pruning, specifically, selecting secondary branches with the thickness of 5 mm-10 mm, and totally reserving 5-10 branches; and (3) conducting third-time branch pruning, specifically, selecting third-time branches with the thickness of 2 mm-5 mm to carry out light or moderate pruning. Accordingto the method, the open field matrix potted blueberries are pruned after fruit harvesting in summer, so that vegetative growth can be effectively controlled, flower bud differentiation is promoted, the flower bud quality is improved, old branches can be removed in time through annual cyclic operation to update tree bodies, and plants are in a high-yield state every year.

Description

technical field [0001] The invention belongs to the field of fruit tree cultivation, and in particular relates to a pruning method for promoting flower bud differentiation of potted seedlings of the blueberry variety 'Sharpblue' (Sharpblue) which is more than 3 years old. Background technique [0002] Blueberry is a kind of fruit rich in anthocyanins. It has health care functions such as eye protection, anti-cancer, beauty and beauty, and anti-aging. It is more and more popular among people and has a large market demand. [0003] The growth of blueberries has high requirements on soil pH, organic matter content, drainage and air permeability. However, there are few soils suitable for blueberry planting in my country. Conventional soil improvement is time-consuming and laborious, and soil properties cannot be completely improved. The use of matrix cultivation technology can provide the best rhizosphere environment for the growth of blueberries, which is beneficial to the grow...

AI Technical Summary

Problems solved by technology

However, there are the following problems in both the open field substrate cultivation and the greenhouse substrate cultivation: that is, because the substrate cultivation adopts scientific methods to configure the optimal substrate and pH value for blueberry growth, it has better water retention and fertilizer retention while increasing air permeability and drainage, which greatly promotes the growth of blueberries. The vegetative growth of the plant is easy to cause the plant to grow excessively, inhibit the differentiation of flower buds, and ultimately affect the fruit yield

[0005] Open-ground substrate cultivation is often combined with branch pruning, and the pruning method is mostly conventional fruit tree pruning, that is, autumn and winter pruning, which to a certain extent removes elongated branches and promotes the growth and germination of new branches, but it cannot significantly promote flower bud differentiation and cannot solve the problem of yield and quality in the next year falling problem

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