The optimum growth temperature of warm-season turfgrass is 25℃-35℃, which mostly comes from tropical and subtropical regions, widely distributed in warm and humid, warm semi-humid and warm semi-arid climate regions, and also distributed in temperate zones of Central China.
Its growth is mainly limited by extreme low temperature and its duration, and its main characteristics are strong heat resistance, good disease resistance, extensive management resistance, short green period of most varieties, light green color and so on. There are few species to choose from, including Bermuda grass, Zoysia japonica, teff, Pennisetum, carpet grass, Pteris vittata, etc. 10, more than 20 species and nearly 100 varieties.
The optimum growth temperature of cool-season turfgrass is 15℃-25℃. Most of these grasses are native to the forest edge areas of northern Europe and Asia, and widely distributed in Liang Yu, wet, cool and semi-wet, cool and semi-arid and transitional areas.
Its growth is mainly under high temperature stress; Duration of extreme temperature and constraints of arid environment. As far as China's climate conditions are concerned, cool-season turfgrass is mainly distributed in northeast, northwest, north, east and central China, and some high-altitude cool areas south of the Yangtze River.
Its main characteristics are long green period, strong green and fine management. There are many kinds to choose from, including more than 10 genera, more than 40 species and hundreds of varieties such as Kentucky Bluegrass, Festuca arundinacea, Lolium perenne, bentgrass, Bromus and Suaeda salsa.
Lawn grass is divided into:
Leisure lawn grass, ornamental lawn grass, sports lawn grass, traffic safety lawn grass and soil and water conservation and slope protection lawn grass. Herbs used in urban and garden lawns mainly include Zoysia japonica, Pennisetum, Bermuda grass, carpet grass, blunt leaf grass, centipede grass, ryegrass, Kentucky bluegrass, millet and so on. Lawn notes in Ci Hai: "Lawn is also called lawn."
Extended data
application area
It is generally believed that anything suitable for lawn planting can be called lawn grass, but modern lawns mainly use gramineous grass, which is called lawn grass for lawn planting. Herbs that constitute lawn vegetation are the basic materials for building lawns. Lawn grasses are some herbaceous species or varieties that can form lawns and can be pruned.
Lawn is a whole piece of green ground cultivated by artificial planting or grass seed sowing in the garden. It is an important part of garden landscape and a place for rest and entertainment.
However, modern lawns are not limited to gardens, but have been widely used in sports fields, soil and water conservation areas, railways, highways, airports and factories. Broadly speaking, lawn is a green body with a certain area built by people with grass, representing an advanced ecological organism. It consists of turfgrass and growth environment, and mainly consists of three parts: overground branch layer covering the surface, underground root layer and topsoil layer where roots grow.
The cultivation technology of lawn grass in the world is represented by golf course lawn grass. Turfgrass is a kind of artificial grassland, which is densely planted and trimmed with perennial short herbs. /kloc-in the middle of the 0/8th century, a large area of lawns appeared in British natural landscape gardens. Lawns also appear in modern gardens in China. It is usually set in front of houses, squares, open spaces and around buildings for viewing, entertainment or sports.
Turfgrass is mostly a Gramineae herb with the following characteristics:
1, lawn grass leaves are many and small, slender and upright. Most lawn grasses are under-propagated, and the vegetative body is mainly composed of leaves. Small and dense leaves are beneficial to the formation of carpet-like lawn, while upright small leaves are beneficial to the transmission of light to the lower leaves of lawn, so the lower leaves rarely turn yellow and die in high density.
2. The green color of lawn grass is one of the most important characteristics of lawn grass. Excellent lawn grass should have green leaves, uniform green and long green period. Generally, the green period of excellent cool-season lawn is more than 200 days, and that of excellent warm-season lawn is more than 250 days.
3. The growth point of the upper part of the lawn is low, with multiple protection of tough leaf sheaths. Pruning, rolling and trampling in this way do little harm to lawn grass, and are beneficial to the growth of branches and adventitious roots, as well as to overwintering.
4. Turfgrass is mostly low-rooted, creeping or tufted plants, which have strong vitality and reproductive ability, besides seed fertility, it also has strong asexual reproductive ability.
5. Turfgrass has strong adaptability, wide distribution range and good stress resistance. Many varieties have strong adaptability to cold, drought, strong light, heat, acid and alkali, trampling and pollution, and are easy to manage.
6. Turfgrass has certain elasticity, is harmless to people and animals, and does not have bad substances such as odor and juice that pollutes clothes.
References:
Baidu Encyclopedia: Lawn Grass