A pruning method to promote the differentiation of blueberry flower buds under the condition of open field substrate cultivation

A pruning method and substrate cultivation technology, applied in cultivation, horticultural methods, botanical equipment and methods, etc., can solve the problems of affecting fruit yield, unable to significantly promote flower bud differentiation, and plant leggy, etc., so as to improve flower bud quality and control vegetative growth. , the effect of promoting flower bud differentiation

Active Publication Date: 2022-04-05
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A pruning method to promote the differentiation of blueberry flower buds under the condition of open field substrate cultivation
  • A pruning method to promote the differentiation of blueberry flower buds under the condition of open field substrate cultivation

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Pruning time is determined

[0030] The open-ground potted blueberry variety 'Sharpblue' with basically the same size and growth vigor was selected for pruning experiment: in late June, after 90-95% of the plants' fruits were harvested, the remaining fruits and invalid flowers were pruned, and the plants were grown for 0, 5 days, Prune after 10d, 15d, and 20d.

[0031] Pruning takes the order from bottom to top, first select the basal branches with a thickness range of 10mm-30mm, and keep 3 main trunks; then select the secondary branches with a thickness range of 5mm-10mm, keep 10, and control the length of 20cm-40cm; finally Choose tertiary branches with a thickness range of 2mm-5mm, keep 20%, and control the length to 10cm-20cm. Under normal fertilizer and water management, count the number of flower buds per plant in winter (December-January) after 6 months. 9 plants were selected for each treatment, and 3 replicates were performed.

[0032] The effect of differen...

Embodiment 2

[0034] The outdoor substrate potted blueberry variety 'Sharpblue' with basically the same size and growth potential was selected for pruning experiments: 10 days after fruit picking, summer pruning was carried out, 2 basal branches were left, 5 and 10 secondary branches were respectively selected, and the length of the secondary branches was 30cm, the pruning degrees of the three branches are mild (1 / 10 of the number of branches trimmed three times), moderate (2 / 10 of the number of branches trimmed three times), and severe (5 / 10 of the number of branches trimmed three times), The length of the three branches is 15cm. Measure the plant height and crown width immediately after pruning. After 6 months (at this time, the flower buds are enlarged and easy to identify), the number of flower buds is investigated and the yield statistics are carried out at the fruit stage of the next year. The results are shown in the table below.

[0035] Effects of the retained quantity of secondary ...

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Abstract

The invention discloses a pruning method for promoting the differentiation of blueberry flower buds under the condition of open-ground substrate cultivation. The pruning method is to prune the blueberry plants within 10-15 days after the blueberry fruits are picked in summer: Keep 1-3 basal branches with a thickness of 10mm-30mm as the main trunk; (2) Secondary branch pruning: select secondary branches with a thickness of 5mm-10mm and keep 5-10 branches in total; (3) Tertiary branches Pruning: Select three branches with a thickness of 2mm to 5mm for light or moderate pruning. The present invention can effectively control vegetative growth, promote flower bud differentiation and improve flower bud quality by performing post-fruit pruning on potted blueberries in the open ground, and the annual cycle operation can timely remove old branches and renew the tree body, so that the 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G7/06A01G17/00
CPCA01G7/06A01G17/005
Inventor 王小敏吴文龙赵慧芳闾连飞黄正金张春红
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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