Lawn is an important part of greening work, and lawn coverage is one of the important indicators for evaluating the level of modern greening. Lawn plants mainly refer to low plants that cover the ground. They can be used to form a large area of flat or slightly undulating grassland. They are one of the important conditions that mark the greening environment and greening level. Lawn is not only a place for people to rest and visit in parks, gardens, squares, streets, zoos, botanical gardens, amusement parks, schools, hospitals, etc., but it can also be used for sports fields, airports, dams, rivers, railways, highways, and slope protection. It is Surface vegetation with good soil ground.
1 Lawn standard selection
The choice of lawn greening is related to the planting site conditions, the functional characteristics of the lawn and the biological habits of the grass species. Whether the lawn can fully exert its functional benefits is directly related to the selected grass species. Therefore, the following aspects should be considered when selecting grass species: ① Grass species that are adapted to local environmental conditions, are easy to reproduce, grow quickly, and maintain bright green leaves for a long time throughout the year. ② A perennial grass species that is resistant to pruning and trampling, and has strong ability to compete with weeds. ③ Strong ability to adapt to adverse environments, resistant to drought, waterlogging, harmful gases, pests and diseases, barrenness, etc. ④ According to the maintenance and management conditions, try to choose grass species with short plants, thin leaves, consistent growth, and beautiful leaf color.
2 Preparing the soil before planting
Before laying the lawn, the soil on the site should be improved and the drainage and irrigation system should be prepared. At the beginning of the establishment of the lawn, weeds should be removed and all tiles, gravel and other debris should be cleared out of the site. The lawn should be leveled with high filling and low filling. Lawn plants are low grasses without thick tap roots and shallow root distribution. Try to make the soil thickness about 40 cm, preferably not less than 30 cm. If soil is found in local areas, If the layer is poor or there is too much mixed soil, the soil should be replaced to ensure uniform growth of the lawn. When preparing the land, you can apply base fertilizer, such as manure, compost, peat and other organic fertilizers, then plow once, and then level the ground to avoid water accumulation. An ideal flat lawn surface should be slightly higher in the middle and gradually slope toward the sides or edges. The lawn around the building should be 5 cm lower than the foundation and then slope outward. Lawns where the soil is too dry or the groundwater level is too high or where there is too much water, as well as lawns on sports fields, should be equipped with hidden pipes or open ditches for drainage. A more complete drainage facility is a system of hidden pipes connected to the free water surface or drainage pipe network. . Before the final leveling of the site, the sprinkler irrigation pipe network should also be buried.
3 How to plant lawns
3.1 Sowing method
It is suitable for grass seeds that produce large amounts of seeds and are easy to collect. They can be propagated by seeds. Generally sown in autumn or spring, it can also be sown in summer, but most grass seeds germinate poorly in hot weather. In principle, warm-season grass seeds are sown in spring and can be sown in late spring and early summer; cool-season grass seeds are sown in autumn. In order to increase the germination rate, seeds that are difficult to germinate should be treated before sowing.
3.2 Stem sowing method
The stem sowing method can be used for grass species that are prone to stolons, such as dogroot, carpet grass, zoysia tenuifolia, creeping bentgrass, etc. This method is to shovel up the mother lawn, shake off the soil attached to the roots or rinse it with water, and then spread the roots or cut them into short sections of 5 to 10 cm long, with each section having at least one node. Spread small stem sections evenly on the soil, then cover with fine soil about 1 cm thick, press lightly, and spray water immediately. From now on, spray water once a day in the morning and evening, and gradually reduce the number of water sprays after the roots take root. The stems can be sown in spring when the grass seeds begin to germinate, but it is usually carried out in August to September in autumn, because it takes 3 months for spring sowing, and 2 months for autumn sowing to cover the ground.
3.3 Split planting method
After shoveling the turf, carefully loosen the bushes and plant them in holes or strips at a certain distance. If Zoysia tenuifolia is planted separately, it can be planted in strips at a distance of 30 to 40 cm. Every 1 m2 of grass can be planted in 30 to 50 m2. After planting, suppress it and irrigate it fully. In the future, be careful not to dry out the soil and strengthen management. After planting, the grass can be covered with soil after 2 years. If you want to multiply quickly and form turf, shorten the distance between strips.
3.4 Spreading method
The main advantage of this method is that it can form a lawn quickly, can be carried out at any time, and is easy to manage after planting. However, it is costly and requires abundant grass sources. It can be divided into the following forms.
(1) Close paving method. A method of covering the entire ground without leaving any gaps. Cut the turf into long strips, 25 to 30 cm wide and 4 to 5 cm thick. It should not be too thick to avoid being too heavy. When cutting the turf, place a wooden board of a certain width on the lawn, and then cut it with a grass shovel along the edge of the wooden board. When laying turf, a distance of 1 to 2 cm should be left at the turf joints. The grass surface can be pressed and flattened with a tube to make the grass surface and the surrounding soil surface level. In this way, the turf and the soil are in close contact, protected from drought, and the turf is easy to grow. Sod should be adequately watered before and after laying.
(2) Intermediate paving method. There are generally two forms of paving method. The first is to use rectangular turf, which is paved and rotated, with a distance of 3 to 6 cm between each piece, and the paved area accounts for 1/3 of the total area. The other is that each piece of turf is arranged alternately, shaped like a plum blossom, and the planting area is 1/2 of the total area. When planting, the place where the turf is planted should be dug down according to the thickness of the turf to make the turf and soil surface level. Once the lawn is laid, it can be suppressed and then watered. For example, when planting in spring, the stolons will grow in all directions after the rainy season, and the turf will be closely connected to each other.
(3) Article spreading method. Cut the turf into long strips 6 to 12 cm wide and plant them with a row spacing of 20 to 30 cm. The turf laid in this way can be fully connected after half a year. The management after planting is the same as the inter-paving method.
Post time: Aug-14-2024