(a) According to the purpose of the lawn, it can be divided into the following types
1. Recreational Lawn
Lawns for walking, rest, play, and outdoor activities are called recreational lawns. These lawns do not have a fixed shape in the green space, they are of different sizes, and are extensively managed, and generally allow people to enter the recreational activities. Separate trees can also be placed in the lawn to embellish the stone landscape or plant the tree clusters. Flower bands and forest groves can also be arranged around the perimeter. A large area of ​​rest lawns, the space formed in the middle, can disperse the flow of people. Such lawns are generally covered in large-scale green areas and are most widely used in parks, followed by botanical gardens, zoos, scenic spots and historic parks, amusement parks, and scenic spots. The health resorts are all equipped with blankets and green lawns, high-resilience lawns that are safe, comfortable and have excellent performance. They have built a vibrant and green lawn for tourists to visit, rest and culture. Can also be established in institutions, schools, hospitals and other places, should use the growth of low, fine, high-leaf, grass and beautiful grass species.
2. Sports lawn
Lawn for sports activities, such as a football field lawn, a tennis court lawn, a golf course lawn, a grass court lawn, a martial arts court lawn, a children's playground lawn, and the like. For various types of sports grounds, it is necessary to use lawn-resistant plants that are resistant to trampling and elasticity.
3. Ornamental lawn
In general, this type of grass or lawn does not allow visitors to cruising or trample inside, for viewing purposes only. Closed lawns, such as pavilions, fountains, monuments, etc., are used as front or front views. Generally used low, slender, green long turf plants. Cultivation and management requirements are fine and weed control is strictly controlled.
4. Flower bed nature lawn
The mixed lawn is planted in the flower beds and used as a filling material or trim for the flower beds. It functions as a decoration and a lining, complements the patterns and colors of the flower beds, and is generally applied to low-lying lawn plants. The management requires precise control of weed growth and regular trimming and trimming in order to maintain the pattern and pattern lines of the flower bed.
5. Grazing lawn
For grazing, combined with grassland gardens, most of them are mixed grasslands and nutritious pastures. They are usually applied in suburban gardens such as forest parks or scenic spots. Should use excellent and strong pastures that grow well, use terrain drainage, and be naturally fun.
6. Airport lawn
Laying grass at the airport. Covering the airport with lawns to reduce dust and sand, improve visibility, and keep the environment clean and beautiful. Aircraft lawns require high-speed impact and heavy weight. Therefore, the lawn is required to be flat, solid, dense and flexible, and extensively managed. Strong, thin, drought-resistant, trampled grass species.
7. Forest lawn
The grassland that the suburban forest parks and scenic areas hear in nature in the forest environment is called forest grassland and is generally not pruned to allow visitors to move.
8. Under the lawn
The grass under the sparse forest or under the dense forests and under the tree arbors is called the undergrowth grassland. Usually without trimming, choose shade-resistant, low-lying lawn plants.
9. Slope revetment lawn
All the grasslands that are laid on the slopes and banks to keep the water and soil from being washed are called slope protection bank. General application of strong adaptability, developed roots, grass close, strong grass species.
(2) Garden lawns can be divided into the following types according to the combination of herbaceous plants.
1. Plain lawn
A grass made up of a herbaceous plant is called a single grassland or simply a grassland, such as grassland grass, zoysiagrass lawn, and dog grass lawn. In the north of China, we use buffalo grass, bluegrass, and zoysia grass to plant a single lawn. In southern China and other places, Manila grass, Chinese knotweed, false grass, carpet grass, Kentucky bluegrass, tall fescue and so on are selected. From a single turf growing neat, beautiful, low, dense, leaf color and other consistent, conservation management, demanding fine.
2. Mixed lawn
It is formed by the mixed sowing of several grass perennial herbaceous plants, or grass or grass mixed with other herbaceous plants in the grass perennial herbaceous plants, and is referred to as mixed lawn or mixed grassland. According to the nature of the lawn function, different resistance and people's requirements, a reasonable ratio of mixing to improve the turf effect. For example, in the north of China, Kentucky bluegrass, purple fescue and perennial ryegrass are the main grass species in southern China, such as Bermudagrass, carpetgrass or Zoysiagras, which can be mixed with perennial ryegrass.
3. Embellishment lawn
In lawns or grasses (mixed or simple) with Gramineae as the main body, some flowering ornate perennial herbs are arranged, which are called flowerbeds. For example, on the grass, natural sparse spots are adorned with Crocus, Narcissus, Iris, Lycoris, Phlox subulata, Irisensata, and Jade. Hosta), Zephyranthes, Cymbidium, February Orchid, Oxalis, etc. Violet herbs, herbs, and bulbous plants. The planting of these plants generally does not exceed 1/4-1/3 of the total area of ​​grassland. The distribution is sparse and dense, but it is scattered naturally, but it is mainly used for grazing lawns, forest grasslands, undergrowth grasslands, ornamental grasslands, and revetment slope protection grasslands. On recreation lawns, bulbous flowers are distributed in places with less people flow. This herb and bulbous flower, sometimes with leaves and sometimes flowering, sometimes the flowers and leaves are hidden in the grass. There is only a piece of grass on the ground. It looks like a carpet and looks funny. It can be appreciated and rested.
(C) According to the combination of grassland and trees, the lawn can be divided into the following types
1. Empty lawn
Do not plant any shrubs on the grass or grow a few in the surrounding area. This kind of grassland is mainly used for sports games and lawns for people's activities because it is relatively open. It is usually used for walks and rests for tourists, and festivals can be used as performance venues. It is visually relatively single and empty, and it has a simple and magnificent momentum in its artistic effect. The disadvantage is the poor shading conditions.
2. Locking the lawn
Around the open grass, if surrounded by other trees, buildings, earth hills and other scenes above the eye level, the surrounding scenery is connected or not, as long as the perimeter around the grassland reaches 3/. 5 or more; at the same time, the height of the barrier scene is above the horizon line, and its height is greater than 1/10 of the average length of the long axis of the grass (ie, when the line of sight elevation angle exceeds 5-6), it is called closed lawn.
3. Cheerful lawn
Within 3/5 of the boundary of the turf, the lawn is called a cheerful lawn when it is not covered by the landscape barrier above the eye level.
4. Lawn
When the lawn is sparsely distributed with some single trees and shrubs, the spacing is very large. When these trees cover 20% to 30% of the total area of ​​the lawn, they are called thin lawns. The savannah lawn is mainly used for a large number of people to surf the lawn, there is a certain shade conditions, and sometimes it is to watch the lawn.
5. Sparse lawn
Arranged on the grass is a tall tree with a plant spacing of about 10 meters and a canopy density of 30% to 60%. Empty lawns, suitable for spring sports or winter sports or outdoor activities in the subtropical region; savannah lawns are suitable for general holiday activities during spring holidays and winter. However, during the hot summer months, there was no shade on the grass and it was not available. This sparse forest lawn, due to the shade of the forest is not large, can be planted Gramineae herbaceous plants, because the absolute absolute size of the lawn is small, can carry out small activities, but also for visitors in the shade downstream, reading, picnic, air Bath and other activities.
6. Under the lawn
In dense forest lands with canopy density greater than 70% or under forests within the tree cluster, positive undergrowth plants are difficult to grow due to small understory light transmittance, and only some negative-negative herb plants with high water content can be grown. Forest lands and tree groups, because of the dense plant spacing, are not suitable for visitors under the forest. Too many visitors will affect the growth of the trees. At the same time, the negative herbaceous plants under the forest have high water content in the tissues. Resistance to trampling, and thus the grass under the forest, to see and maintain the main soil erosion, visitors are not allowed to enter.
(D) According to the different forms of garden planning, lawn division can be divided into natural and regular lawns.
1. Natural Lawn
Make full use of natural terrain or simulate natural terrain relief to create wild grass scenery. This large area of ​​lawn is conducive to trimming and drainage. Whether it is a pruned lawn or a naturally growing grass, as long as it is natural and undulating on the landform, the plants arranged on the grass and around the grass are natural, the layout of the scenery around the grass, the layout of the road on the grass, When the perimeter and the water body of the grass are all natural, the grass or lawn is natural grass and lawn.
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