Flower forcing method for erythrina variegata in park green land

Abstract

The invention discloses a flower forcing method for erythrina variegata in a park green land. The method comprises the steps of branch pruning, soil fertilization and water management. The flowering induction of the Erythrina variegata is realized through the measures of pruning a large amount of the Erythrina variegata, fertilizing soil, reducing watering times and watering quantity and the like. According to the flower forcing method, the illumination intensity and area of leaves in the crown of the erythrina coralis tree can be improved, the content of nutrient substances in the erythrina coralis tree body is increased, flower bud differentiation is promoted, and therefore the ornamental value of the erythrina coralis is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tree flower induction, and in particular to a flower induction method for Erythrina ivoryii in park green land. Background Art

[0002] Erythrina is a deciduous tree of the genus Erythrina in the Fabaceae family. It is native to coastal forests from India to Oceania and is distributed in Malaysia, Indonesia, Cambodia, Vietnam and other places. Plants of the genus Erythrina are mostly studied for the extraction of natural ingredients and the development of their medicinal value. With the promotion of the Maritime Silk Road strategy, the cultural symbolic significance of Erythrina is gradually becoming known to more people. When the flowers of Erythrina are in full bloom, there is a poem that says: "When I first saw the branches, I was so green that I was suddenly startled by the fire umbrella that was about to burn the sky." Its inflorescence is like a ripe pepper, growing in pairs on the branches, implying prosperity, wealth and auspiciousness, and carrying people's longing for a better life. However, due to the influence of uncontrollable factors such as the surrounding architectural environment and climate change, the flowering period of Erythrina in urban parks and green spaces is uncertain, and the flowers are scattered and scarce. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a method for promoting flowering of Erythrina ivory in park green land.

[0004] The specific technical solutions of the present invention are as follows:

[0005] A method for inducing flowering of Erythrina ivoryii in park green land, the method comprising branch pruning, soil fertilization, and water management; the specific steps are as follows:

[0006] (1) Branch pruning: Prune the inner branches, cross branches, dead branches, and peripheral branches of the Erythrina cylindrica extensively. Prune the entire tree until the peripheral light can directly hit the Erythrina cylindrica branches, and the sunlight can penetrate the Erythrina cylindrica tree body and project onto the ground, forming a large number of bright areas.

[0007] (2) Soil fertilization: Apply KH2PO4 to the soil of Erythrina ivoryii, with the application amount of KH2PO4 being 100-500g per plant, and water appropriately after fertilization.

[0008] (3) Water management: Perform appropriate water control measures to reduce the number and amount of watering.

[0009] In a preferred embodiment of the present invention, KH2PO4 is applied to the soil in step (2), irrigated within the drip line of the tree crown, and penetrated the surface soil deep around the tree roots.

[0010] The present invention has the following beneficial effects:

[0011] 1. Improve the light intensity and area of the leaves in the crown of the Erythrina trees in the park green space: prune the inner branches, cross branches, and dead branches of the Erythrina branches in the park green space to reduce the shade of the Erythrina trees in the park green space, increase the light intensity and area of the leaves in the crown, enhance leaf photosynthesis, and extend the light duration, which helps the photoperiod induce flower bud differentiation and achieve the effect of promoting flowering.

[0012] 2. Increase the soluble sugar content and reduce the soluble protein content in the Erythrina trees in the park green space: The application of KH2PO4 can increase the soluble sugar content in the Erythrina trees in the park green space and appropriately reduce the soluble protein content, so that carbohydrates accumulate in the tree body and the C / N ratio increases, which is conducive to the initiation of flower bud differentiation.

[0013] 3. The application of KH2PO4 affects the process of flower bud differentiation by changing the level of endogenous hormones. Compared with the control group, higher levels of endogenous hormones such as ZT, GA3, ABA, and IAA promote the transition of flower bud differentiation from the early stage to the middle stage, achieving the effect of promoting flowering, and the flowering rate is increased by more than 15%. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further illustrated and described below through specific implementation methods.

[0015] Example 1

[0016] (1) Branch pruning: In September, the inner branches, cross branches, dead branches, and peripheral branches of the Erythrina tree are pruned extensively. The entire tree is pruned until the peripheral light can directly hit the Erythrina branches, and the sunlight is projected through the tree body to the ground, forming a large number of bright areas.

[0017] (2) Soil fertilization: In October, KH2PO4 was applied to the soil of Erythrina ivoryii, with the application amount of KH2PO4 being 100 g per plant. After fertilization, water was applied appropriately.

[0018] (3) Water management: In December, appropriate water control measures should be carried out to reduce the number and amount of watering.

[0019] In this embodiment, branch pruning, soil fertilization and water management are performed on the Erythrina sphaerocephala in the park green space. By supplementing soil nutrients and reducing water supply, the vegetative growth of the Erythrina sphaerocephala is inhibited, causing it to transition from the vegetative growth stage to the reproductive growth stage, thereby inducing the formation and germination of flower buds.

[0020] Example 2

[0021] (1) Branch pruning: In September, the inner branches, cross branches, dead branches, and peripheral branches of the Erythrina tree are pruned extensively. The entire tree is pruned until the peripheral light can directly hit the Erythrina branches, and the sunlight is projected through the tree body to the ground, forming a large number of bright areas.

[0022] (2) Soil fertilization: In October, KH2PO4 was applied to the soil of Erythrina ivoryii, with the application amount of KH2PO4 being 300 g per plant. After fertilization, water was applied appropriately.

[0023] (3) Water management: In December, appropriate water control measures should be carried out to reduce the number and amount of watering.

[0024] In this embodiment, branch pruning, soil fertilization and water management are performed on the Erythrina sphaerocephala in the park green space. By supplementing soil nutrients and reducing water supply, the vegetative growth of the Erythrina sphaerocephala is inhibited, causing it to transition from the vegetative growth stage to the reproductive growth stage, thereby inducing the formation and germination of flower buds.

[0025] Example 3

[0026] (1) Branch pruning: In September, the inner branches, cross branches, dead branches, and peripheral branches of the Erythrina tree are pruned extensively. The entire tree is pruned until the peripheral light can directly hit the Erythrina branches, and the sunlight is projected through the tree body to the ground, forming a large number of bright areas.

[0027] (2) Soil fertilization: In October, KH2PO4 was applied to the soil of Erythrina ivoryii, with the application amount of KH2PO4 being 500 g per plant. After fertilization, water was applied appropriately.

[0028] (3) Water management: In December, appropriate water control measures should be carried out to reduce the number and amount of watering.

[0029] In this embodiment, branch pruning, soil fertilization and water management are performed on the Erythrina sphaerocephala in the park green space. By supplementing soil nutrients and reducing water supply, the vegetative growth of the Erythrina sphaerocephala is inhibited, causing it to transition from the vegetative growth stage to the reproductive growth stage, thereby inducing the formation and germination of flower buds.

[0030] It shows that Example 1, Example 2 and Example 3 can significantly improve the flowering rate of Erythrina in park green space, and the combination of branch pruning, soil fertilization and water management has a good effect on promoting flowering, among which the best effect is achieved when the KH2PO4 application amount is 300g per plant.

[0031] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A method for promoting flowering of Erythrina corallodendron in park green spaces, characterized by: The method for inducing flowering includes branch pruning, soil fertilization, and water management; specifically includes the following steps: (1) Branch pruning: Prune the inner branches, cross branches, dead branches, and peripheral branches of the Erythrina cylindrica extensively. Prune the entire tree until the peripheral light can directly hit the Erythrina cylindrica branches, and the sunlight can penetrate the Erythrina cylindrica tree body and project onto the ground, forming a large number of bright areas. (2) Soil fertilization: Apply KH2PO4 to the soil of Erythrina ivoryii, with the application amount of KH2PO4 being 500g per plant, and water appropriately after fertilization. (3) Water management: Perform appropriate water control measures to reduce the number and amount of watering.

2. The flower forcing method according to claim 1, wherein: In step (2), KH2PO4 is applied to the soil and irrigated within the drip line of the tree crown, and penetrates the surface soil deep around the tree roots.