What exactly is a shrub
It is all year round.
Generally, they are broad-leaved plants, and some conifers are shrubs, such as juniper.
If the ground part dies in winter, but the roots are still alive, and new branches continue to sprout the next year, it is called "semi-shrub".
For example, some Artemisia plants are perennial woody plants, but they die in winter.
Common shrubs include Chinese rose, azalea, peony, Berberis, Buxus buxus, Sabina vulgaris, Sabina vulgaris, Forsythia suspense, Yingchun, Chinese rose, Vitex negundo, Jasmine and Salix psammophila.
The main distribution areas of shrubs in China are Zhejiang, Jiangsu, Anhui, Henan and other places.
Forestry definition (1) The ground branches are erect (erect shrubs) and arched (drooping shrubs); Shrubs (2) crawl on the ground (creeping shrubs) (3) climb other trees (climbing shrubs) (4) branch under the ground or near the roots (tufted shrubs); (5) A shrub whose height is less than 0.5m is called a small shrub; (6) The ground branches died in winter and germinated again in the following spring, becoming semi-shrubs or sub-shrubs.
morphological character
The distinction between shrubs and trees Shrubs are woody plants with no obvious trunk. Plants are generally short, no more than 6 meters, and branches grow from near the ground.
They are all year round.
Generally, they are broad-leaved plants, and some conifers are shrubs, such as juniper.
If the ground part dies in winter, but the roots are still alive, and new branches continue to sprout the next year, it is called "semi-shrub".
For example, some Artemisia plants are perennial woody plants, but they die in winter.
Some shade-tolerant shrubs can grow under trees. In some areas, due to various climatic conditions (such as windy and drought), shrubs are the main body of ground vegetation and form shrubs.
Coastal mangrove is also a shrub.
1, trees: trees are tall (generally 6 meters to tens of meters), and the trunk is obviously tall.
According to its height, it can be divided into Wei Qiao (above 3 1m), Da Qiao (2 1-30m), Zhongqiao (1-20m) and Xiaoqiao (6- 10m).
Shrub: The tree is short (generally less than 6 meters) and the trunk is low.
2. Trees: Woody plants with upright trunks and a height of more than 4 meters are called trees.
Corresponding to the low shrubs, the tall trees you usually see are all arbors, such as kapok, pine, magnolia and birch.
Trees are divided into deciduous trees and evergreen trees according to whether they shed leaves in winter or dry season.
Shrub: Woody plants with inconspicuous trunk and often many branches at the base are called shrubs, such as rose, dragon boat flower, azalea and peony.
Application value
Seabuckthorn 1 and shrub have rich ecological and economic values, and the market prospect of shrub industry is promising.
Although shrubs cannot produce wood, they are widely used as feed, fertilizer and industrial raw materials.
For example, 1000 kg of branches and leaves of Caragana korshinskii is equivalent to the fertility of 4000 kg of sheep manure, and the crude protein content of Caragana korshinskii is as high as 19.08% at the initial flowering stage, which is a high-quality feed.
2, small shrub Hippophae rhamnoides is rich in vitamins and has high value.
3. Shrub industry not only makes enterprises profitable and farmers and herdsmen increase their income, but also makes the land green and injects lasting vitality into the development of shrub.
4. Salix psammophila is the raw material for producing high-quality wood-based panels and pulp.
5. The application value of shrubs is quite high. In addition to traditional industrial and forestry uses, shrubs are also used for urban landscaping, and their economic value is far greater than other uses.
Shrubs are widely used in road greening, community greening, park greening, river bank greening, factory greening and so on.
Pruning methods Improper pruning of shrubs will make them shapeless, or not bloom, or even dead branches.
Different methods must be adopted for different ornamental purposes when pruning.
Pruning flowering shrubs should first be familiar with the flowering habits of different flowering shrubs.
(1) For shrubs that bloom in early spring, such as forsythia suspensa, Yingchun, Rosa davurica, clove, Eucommia ulmoides, cherry blossoms, etc. Their flower buds were formed on the branches of the previous year, so pruning was mostly carried out after flowering in May and June.
Pruning after flowering is mainly based on drying and shaping, and dense branches, overlapping branches and pest branches are cut off; The buds grown on the roots can be properly preserved; The residual branches after flowering can be appropriately compressed from the top to promote their growth, so as to bloom more in the coming year.
(2) For shrubs that bloom in summer, such as hibiscus, rose, crape myrtle, Broussonetia papyrifera, pearl plum, etc., they all form flower buds on the new shoots of that year without low temperature.
Pruning of this kind of flowering shrubs can be carried out in the dormant period (middle and late February).
Appropriate heavy pruning can be taken; In addition to cutting off dead branches and branches with diseases and insect pests, weak branches can be cut off again, strong branches can be cut lightly, leaving 4-7 buds on each branch, and the rest can be cut off.
(3) For shrubs that can be picked many times a year, each time they are picked, they will differentiate into flower buds and bloom once.
For example, the buds of the big flower perfume rose are mostly differentiated at the top of the new branches born that year. As long as you keep pulling out new branches within a year, you can keep flowering.
Therefore, in the growing season, when the flowers wither, they should be pruned immediately to promote the axillary bud germination under the incision, and then draw new flower branches to prepare for re-flowering.
(4) For shrubs that can enjoy both flowers and fruits, such as holly and precious wood, in order not to affect the fruit viewing in autumn, it is not necessary to prune after flowering, but some branches that are too dense can be appropriately cut off to make them ventilated and breathable, so as to achieve better results.
(5) For some shrubs, such as red rosewood and Tang Di, the brightest part of their colorful branches is their tender branches.
So you can cut it again in early spring every year; Leave only 10-20cm on the aboveground part, and cut off the rest to promote the germination of new branches in the coming year.
(6) Some shrubs that have not been pruned for many years should not be uprooted at once, so as not to grow in vain.
For some small trees and shrubs, such as plum blossom, peach, begonia and so on. It is not advisable to prune a lot, let alone cut off the old stems from the ground, otherwise it will not be easy to sprout new buds or even the whole plant will die.
Dense planting and landscaping
Shrub landscaping Small shrubs are densely planted for landscaping, that is, small shrubs with relatively coordinated height, shape, color and size are planted one after another in a certain area like grass, and then the outer surface is trimmed to form a new landscape of plant combination to meet the needs of different landscape design effects.
Close planting of small shrubs can be used as a landscape design method and widely used in garden green space.
It embodies the beauty of pruning and flora.
These plant combinations or color blocks, when applied to different occasions, can play a role in enriching the landscape and increasing the amount of green, with concise, bright and extraordinary effects, reflecting the grand design of garden planning.
Although the dense planting of small shrubs can not completely replace the functions and functions of lawns and herbaceous ground cover plants, it is also widely used in important parts of landscaping because of its advantages of easy management and excellent effect, which can replace lawns and grass flowers to produce high-level garden artistic effects and meet the needs of modern urban landscaping construction.
Evergreen varieties Hypericum 1 and Gardenia: Rubiaceae, native to the south of the Yangtze River in China, have many branches and leaves.
The leaves are oval and bloom from May to July.
Main varieties: ① Gardenia; ② Gardenia angustifolia; ③ Gardenia ovata.
2. Hypericum: Hypericum family, native to China, with long oval leaves, light green, red in autumn, blooming in summer and golden yellow flowers.
3, smile: also known as smiling plum, banana flower.
magnoliaceae
Smiling white with red edge has banana flavor, so it is also called "banana flower".
Main varieties: ① Michelia macrophylla; ② Michelia microphylla; ③ Michelia flava.
4, snow six: commonly known as the stars all over the sky.
Rubiaceae is mostly distributed in Jiangsu, Nanjing, Yixing and other places.
The leaves are oval, slightly leathery, with small white flowers in June, most of which gather together and look like snow from a distance.
Main varieties: ① in thick-leafed snow; ② Six in the snow in Phnom Penh.
5. Nandina domestica: also known as Phyllostachys pubescens, belonging to the genus Nandina of Berberidaceae.
The leaves are pinnately compound, and the leaflets are long and narrow and oval.
Leaves are green in summer and spring, and red in winter and autumn.
Buxus macrophylla: Euonymaceae, Euonymus, native to north-central China.
Main varieties: ① boxwood with golden heart; ② Boxwood in Phnom Penh.
7. Boxwood: Boxwood, Boxwood.
Main varieties: ① Euonymus hupehensis; ② Boxwood watercress; ③ Boxwood seeds.
8. Pittosporum: It is also famous for its alum.
Pittosporum
Large evergreen shrub with obovate leaves.
The edge rolls back slightly.
White flowers are fragrant in summer.
This tree species can resist harmful gases and protect the ecological environment.
9. Top Ten Contributions: Also known as Cat Head.
Berberidaceae, native to Southeast Asia.
Leaves alternate, pinnately compound.
Tiny flowers, most of which bloom together in early summer.
Gardenia 10, france holly: also known as Coral Tree.
Pods of Caprifoliaceae.
Originated from the belt country, our land is growing well now, and it is green all year round.
1 1, Ligustrum lucidum: Oleaceae, Ligustrum lucidum, native, introduced to our place in recent years, leaves, is a dry garden color-leafed plant.
12, Acer truncatum: Rosaceae, Prunus.
Originated in southwest China, it blooms in spring, leaves are red all year round, and its ornamental value is high.
Main varieties: ① single-sided red; ② Double-sided red.
13, Berberidaceae: Berberidaceae.
Native to China, it has scaly oval or obovate leaves and spiny leaves.
It is open from April to May.
There are mainly ① red Berberis; ② Berberis viridis.
14, pyracantha: also known as pyracantha, torch fruit.
Rosaceae.
Originated in the northwest of China.
The young branches are thick and yellow-brown, soft and have spikes on them.
15, heather: also known as rock eye tree.
Rosaceae, Photinia.
Originated in Qinling area of China.
The leaves are leathery, rectangular and green all year round.
16. Palm: Also known as palm tree, it belongs to the family Palmae, the genus Palma, and is native to China.
17, Linnaimu: The smallest member of the "Shrub Kingdom", also known as Linnaicao and Linnaihua, also known as Arctic Flower, belongs to Caprifoliaceae.
Mangrove: Mangrove family
Mangroves, trees or shrubs, 2-4 meters high.
Southeast Asia and Australia are also along the coast.
19, silver pink rose: climbing shrub with cylindrical branches and purple brown; Branchlets slender,; Scattered hook-shaped prickles and sparse glandular hairs.
20. Begonia: also known as tiger _, lion _, unicorn flower, Euphorbiaceae ecological distribution: native to Madagascar.
2 1, ginseng fruit: Solanaceae, fruit and ornamental herbs.
A little common sense: Red leaves follow the bushes, making hiking dangerous and difficult.
Shrubbery covers cliffs, boulders and canyons, which is prone to danger when walking; The bush is also a rope trap.
Here are some tips to avoid bushes: (1) Make good use of mountain roads. It's easier to take a five-mile mountain road than to cross a one-mile bush.
(2) Consider traveling in the season when snow is buried in bushes.
Some valleys are covered with snow and ice in May, which makes it easy for them to walk, but when the snow melts, they can't cross unless they cross difficulties.
(3) Climb away from the avalanche runway.
It is best to take the south slope or the west slope in long valleys, and the avalanche frequency is low.
When climbing the valley wall, you have to go through the Woods between the two avalanche routes.
(4) Aim at dense forests, because shrubs under big trees are usually sparse.
(5) Walk on gravel or residual snow, and don't walk beside bushes.
(6) looking for hunting routes.
Animals usually find the best way out.
(7) It is dry here, and there are no shrubs. The bottom and valleys of the stream are often covered with shrubs.
If one side of the stream is covered with shrubs, please check whether the other side is easy to walk.
(9) If the route is parallel to the stream, you can consider entering the river directly.
The river bed may form a tunnel in the bush pile, which is convenient for walking, but it must be waded.
A dry riverbed is ideal, but in deep valleys, streams may be blocked by fallen trees or form waterfalls.
(10) If the route is parallel to the valley, you can consider directly climbing the forest line or product line and choosing the route higher than the shrub.
(1 1) If there are cliffs on both sides of the valley, go to the foot of the cliff; Flat and open corridors are often formed under cliffs.