CN110547134A

CN110547134A - Application method of crape myrtle as dwarfing color block

Info

Publication number: CN110547134A
Application number: CN201910584720.XA
Authority: CN
Inventors: 黄财权
Original assignee: Zhenjiang Woye Agricultural Technology Development Co Ltd
Current assignee: Zhenjiang Woye Agricultural Technology Development Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2019-12-10
Anticipated expiration: 2039-07-01
Also published as: CN110547134B

Abstract

The invention relates to the technical field of landscape architecture, and particularly provides an application method of crape myrtle as a dwarfing color block, which comprises the following steps: A. screening a lagerstroemia indica variety suitable for dwarf planting; B. seedling culture: in summer, the tender branches are adopted for cuttage culture to obtain the engineering seedlings with the height of 30-50 centimeters; C. landscape engineering construction: selecting proper planting density for deep planting, and enabling the distance between the root and the soil surface to be 6-10 cm; pruning the overground part of the planted seedlings to be 5-40 cm high; controlling the growth amount of the current year to be 20-40 cm and the flowering height to be 30-60 cm; D. and (5) maintenance: d1, controlling fertilization; d2, pruning once a year. The application method of the crape myrtle as the dwarfing color block develops a novel dwarfing color block application form with rapid scene formation, long ornamental period and low maintenance cost, expands the application field of the crape myrtle, and provides a brand-new choice with low cost, quick effect and outstanding landscape effect for city beautification.

Description

Application method of crape myrtle as dwarfing color block

Technical Field

The invention belongs to the technical field of landscape architecture, and particularly relates to an application method of crape myrtle as a dwarfing color block.

Background

Lagerstroemia indica (Lagerstroemia indica) belonging to Lythraceae (Lythraceae) deciduous shrub or small arbor, smooth bark, pale red, purple or white flower with diameter of 3-4 cm, panicle, petal 6, shrinking, long claw, flowering phase of 6-9 months, and fruit phase of 9-12 months. The crape myrtle has long flowering period and strong ornamental value, and has a cultivation history of more than 1600 years in summer. Crape myrtle is cultivated in the north to north China and south to Hainan province. Wherein, the east China represented by Su, Zhe and Hu is a hot spot for producing, planting and selling the crape myrtle seedlings.

at present, the crape myrtle is mainly applied to flower shrubs (used as a middle layer in greening engineering, the height of the plant is 1.50-2.50 meters) and small trees (used for arc planting and embellishing, the height of the plant is 2.5-6 meters), is planted around buildings, roads, courtyards, garden gadgets and the like, and is used as a summer flower-watching plant or embellishing. Furthermore, crape myrtle is trimmed and shaped to be used as a plant sculpture or a small product. Because the lagerstroemia indica is deciduous shrub or small tree and the growth habits of different varieties are different, the growing quantity of the branches growing in the same year after the lagerstroemia indica sprouts in spring is large, the length of the branches is even more than 1 meter, and the dwarfing application difficulty of the lagerstroemia indica is very large. Dwarfing color blocks generally require the flower height of the used plants to be 30-60 cm, but common lagerstroemia indica cannot meet the requirement, and reports that the lagerstroemia indica is applied as dwarfing color blocks are not seen at present.

The flowering plants applied as ground cover color blocks (the height of the plants is within 60 centimeters, close planting is carried out to cover soil) are mostly herbaceous, the flowering plants are replaced 4-5 times every year, important landscape nodes are replaced ten times every year, the construction cost is extremely high, and the method is not suitable for large-area application in urban landscapes.

if the dwarfing of the crape myrtle can be successfully applied as a ground cover color block, the method has the advantages of long flowering period and good flowering effect, can replace grass flower color blocks, saves a large amount of construction cost, is beneficial to solving the problem of flower city construction by one-time construction and viewing for many times, and has important significance for city beautification.

Disclosure of Invention

the invention aims to provide an application method of crape myrtle as a dwarfing color block.

The invention provides an application method of crape myrtle as a dwarfing color block, which comprises the following steps:

A. Screening a lagerstroemia indica variety suitable for dwarf planting;

B. Seedling culture: adopting twig cuttage in summer to culture the engineering seedlings with the height of 30-50 centimeters;

C. Landscape engineering construction:

c1, selecting proper planting density according to different climates of south and north;

C2, deep planting during field planting, wherein the distance between the root of the engineering seedling and the surface of the soil is 6-10 cm;

c3, pruning the overground part of the planted seedlings to be 5-40 cm high according to the requirement of the engineering landscape effect; controlling the growth amount to be 20-40 cm high and the flowering height to be 30-60 cm high in the current year so as to meet the application requirement of dwarfing color blocks;

D. and (5) maintenance:

D1, controlling the application of nitrogen fertilizer to avoid too high growth;

d2, pruning once a year to achieve the landscape effect with the expected height of 30-60 centimeters.

The method comprises the following steps of screening a lagerstroemia indica variety suitable for dwarf planting, wherein the screening standard is as follows:

Firstly, the branch length of the current-year-growing branches is 30cm-50 cm;

secondly, 50-70 flowers are planted in a single inflorescence, so that the leaves can be basically covered by the flowers;

Thirdly, the top of the branch blooms, but the lateral branch blooms;

fourthly, the flower blooming is early, and the amount of the nutritional growth in the current year is small;

The branches are strong in vertical shape and do not droop;

Sixthly, the cutting blooms in the current year;

Seventhly, branch of lateral branches is reduced after pruning.

The screening criteria preferably comprise the varieties of which the leaves have colors.

Wherein the Lagerstroemia indica variety suitable for dwarf planting, preferably Lagerstroemia indica (Lagerstroemia indica 'Pink Veour' or 'Whit III', U.S. Pat. No. PP #10319, is invalidated).

wherein, the suitable planting density is selected according to the difference of the south-north climate, and the specific suitable density is as follows: 25-49 plants/square meter are suitable in the north, and 16-25 plants/square meter are suitable in the south.

the invention has the following advantages:

According to the invention, through deeply researching and comparing the biological characteristics of 200 worldwide crape myrtle varieties, the crape myrtle' velvet crape myrtle with no long shoot, large flower quantity, flowering top branches (non-lateral branches), early flowering (the length of the annual branches can be controlled only if the branches bloom early), strong upright branches, no branch droop, flowering in the current year by cuttage in the current year, dense flowering and red tender leaves and autumn leaves is selected, and the dwarfing color block is applied, so that the good beautifying and viewing effect is obtained. The invention develops a novel dwarfing color block application form with rapid scene formation, long ornamental period and low maintenance cost, expands the application field of the crape myrtle, breaks through the defect that the ground cover flower plants can only select herbaceous plants for a long time, opens up the way that the woody plants in the long flowering period are applied as the ground cover color blocks, provides a brand-new choice with low cost, quick effect and outstanding landscape effect for city beautification, and makes outstanding contribution to city florescence.

Detailed Description

the following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications or substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit and scope of the invention.

unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

example 1

Variety screening technology:

in 2010-2015, 200 American crape myrtle varieties are subjected to field investigation and comparison on biological characteristics, and varieties meeting the following characteristics are screened out:

firstly, the branch length of the current-year-growing branches is 30cm-50 cm;

thirdly, the top of the branch blooms, but the lateral branch blooms;

the branches are strong in vertical shape and do not droop;

Sixthly, the cutting blooms in the current year;

seventhly, branch of lateral branches is reduced after pruning;

the leaves have colorful varieties (the leaves are used for replacing the flowers for a period of time, and the colored period of the whole year can be competitive with the grass flowers planted in multiple seasons).

through the observation and comparison of the growth habits of 200 crape myrtle varieties for many years, the varieties meeting the conditions are finally screened out, namely, 'velvet' crape myrtle is subjected to dwarfing and application of color blocks, and a good beautifying and ornamental effect is obtained.

seedling raising technology:

Adopting twig cuttage in summer to culture the engineering seedlings with the height of 30-50 cm, and facilitating the high-density planting construction of color lump fields; the traditional crape myrtle seedling raising mostly adopts winter-spring hardwood cuttage, so that the root system of the raised seedlings is too large, the plants are too high, and the color blocks are inconveniently planted and constructed in a high-density manner.

Engineering construction technology:

1. properly deeply planting the plants, and reducing the air permeability of roots to control the growth of the plants, wherein the distance between the roots and the surface of the soil is 6-10 centimeters; 2. after the field planting of the engineering seedlings with the height of 30-50 cm is finished, trimming the engineering seedlings into 5-40 cm high according to the requirement of engineering landscape effect, wherein the annual growth amount is 20-40 cm high, and the height is 30-60 cm high during blooming, so that the requirement that color blocks are applied is met; 3. according to the difference of the south-north climate, 25-49 plants/square meter are suitable in the north, 16-25 plants/square meter are suitable in the south, and the effect of controlling the plant length can be achieved.

and (3) maintenance technology:

1. Controlling the fertilization to avoid too high growth; 2. once a year, to achieve the landscape effect of the expected height.

by the method, the woody plant with a long flowering period is dwarfed into ground cover color blocks for application, common herbaceous flower color blocks can be replaced, and the cost is reduced by 80-95%. The dwarfing crape myrtle can form purplish red leaf-viewing color blocks in spring and autumn, purplish red flower-viewing color blocks in summer, and the viewing period reaches 120-fold 300 days. Has the advantages of long ornamental period (flowering period), good persistence, low cost, one-time scene forming and multi-year application.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. An application method of crape myrtle as a dwarfing color block is characterized by comprising the following steps:

A. Screening a lagerstroemia indica variety suitable for dwarf planting;

C. landscape engineering construction:

D. and (5) maintenance:

2. the method of claim 1, wherein the lagerstroemia indica variety suitable for dwarf planting is selected according to the following criteria:

Firstly, the branch length of the current-year-growing branches is 30cm-50 cm;

Thirdly, the top of the branch blooms, but the lateral branch blooms;

the branches are strong in vertical shape and do not droop;

sixthly, the cutting blooms in the current year;

Seventhly, branch of lateral branches is reduced after pruning.

3. The method of claim 2, wherein the screening criteria comprises the varieties of the leaves having a color.

4. The method of claim 1, wherein the cultivar of banaba suitable for dwarf planting is 'velvet' banaba.

5. the method for applying crape myrtle as a dwarfing patch according to claim 1, wherein the suitable planting density is selected according to different climates in the south and north, and the specific suitable density is as follows: 25-49 plants/square meter are suitable in the north, and 16-25 plants/square meter are suitable in the south.