The success of the Beijing Olympic Games has made the "Bird's Nest" and other stadium lawns the focus of attention.

On the sports field, a high-quality lawn can not only make the audience feel pleasing, but more importantly, it can significantly reduce the chance and degree of injury to athletes, and enable athletes to dare to perform actions to promote their skills. In addition, the turfgrass height, density, elasticity and other indicators have a great impact on the movement of the ball, and ultimately will determine the athlete's play and the excitement of the game. However, in China, many people and even professionals have not yet realized the importance of the lawn to the game, resulting in many problems in the construction and management of the grass lawn. The biggest issue is whether the budget is "limited" and whether the price of the used grass species is "appropriate", but seldom consider the inherent qualities of the selected grass species.

In the construction of stadiums in our country, as a sports center lawn for visual centers, the construction and construction funds account for a very limited proportion of the entire construction cost of the stadium. If a standard soccer field turf has a construction cost of 1 million yuan, it is already very good. The cost of grass seed is only about 5% of the total budget. It is not clear to many people that this 5%, to a large extent, determines the future appearance and function of a stadium. If the grass species are not properly selected, the structure and management measures of the flat bed cannot be remedied. If grassland species of low quality are selected for the sake of cost reduction, it will not only be impossible for athletes to meet the requirements of the use of the venues, but will also affect the athletes' performance. It will also greatly increase the costs of management and protection at a later stage, and will be counterproductive.

So how should we choose the grass species needed for the sports field lawn?

When selecting the grass species, the following factors should be considered comprehensively: environmental and climatic conditions, use characteristics, and site conservation management conditions.

Due to the environmental climate

The environmental and climatic conditions are the first factors to consider when choosing a turfgrass species in a sports field, namely, the so-called adaptive principle. The selected grass species must first adapt to the local climatic conditions and environmental conditions in order to ensure the normal growth of turfgrass, and to use its function. For sports lawns, there are not many turfgrasses to choose from. The common cool-season turfgrasses include bluegrass, tall fescue, perennial ryegrass, red fescue, and bentgrass; warm season The turfgrass includes bermudagrass, zoysiagrass, valerian grass and carpet grass. When selecting the grass species, it is firstly determined whether cold or warm-season turfgrass should be used, which is based on the local climatic conditions. In China, the Yangtze River is generally used as the boundary. The warm-season turfgrass is preferred to the south of the Yangtze River and the cold-season turfgrass to the north of the Yangtze River. The above two types of turfgrasses can be selected in the transition zone.

Different depending on usage characteristics

The stadium has different characteristics in terms of its use, and there is a big difference in the choice of grass species. For example, the turfgrass on the soccer field requires strong resistance to trampling, and the recovery ability is good. In addition to the resistance to trampling and low pruning, the tennis turfgrass should have good elasticity; the green of the golf course requires the grass species to have Low pruning, strong ability to restore regeneration, uniform growth and other characteristics.

For a certain kind of sports field, the quality of professional turf has the highest requirements. In order to meet the requirements of the playing field, the grass species naturally choose the best performance under the conditions that other factors can be met such as the management and protection conditions and construction costs. . In general, the quality of the turf on the sports ground is not high, and there is a large margin in the selection of grass species, but the intensity of use of the court must also be considered. Take the football field as an example. For the warm-season playground, bermudagrass and zoysiagrass are the first choices. For the cold-season playgrounds, bluegrass or bluegrass is preferred for mixing with the perennial ryegrass. If the intensity of the course is high, warm-season lawns should be suitable for bermudagrass, because the rest of the several warm-season turfgrasses have poor recovery ability. After a high-strength trampling injury, it is not easy to recover in a short time. In the cool-season turfgrass, tall fescue is easy to form plexiform lawn under high intensity, and it is not easy to recover in the short term, resulting in increased turf friction and a decrease in uniformity. Compared with tall fescue, bluegrass lawn or bluegrass mixed lawn with perennial ryegrass is more resistant to high-intensity trampling. If the course is not strong enough, then the above turfgrass can be used as an option.

Due to conservation conditions

Site management and protection conditions are also important factors for the selection of turfgrass species in sports fields. For lawns, the late-stage management conditions are critical to the quality of the turf. In particular, the concept of "three-point and seven-point" is very prominent. Different turfgrass has different management requirements. In the cold-season turfgrass meadow grass and tall fescue lawn, for example, the bluegrass turfgrass has higher requirements for management and protection than the tall fescue turfgrass, mainly for the needs of water and fertilizer, and for pests and diseases. Sensitivity. Because of its strong heat resistance and drought resistance, tall fescue has become an ideal choice for all kinds of sports turf in the transition zone or under low maintenance and management conditions.

Based on the above major factors, we can basically determine what kind of grass to use for the next plantation, and then we must choose what kind of plant to use.

When choosing a variety, it is necessary not only to pay attention to the conventional indicators such as the purity and germination rate of the seeds, but also to consider the species with high reputation and recognition of the grass seed company. Brand-name varieties means high quality. High-quality varieties have been tested for many years and in different climatic regions. Authoritative organizations have high evaluations.

The easiest way to know whether or not the variety you are following is excellent is to refer to the test reports of NTEP (National Turfgrass Evaluation System) and STRI (Sports Institute of the UK Sports Ground). These reports have world-accepted accuracy and objectivity. Choosing the best of these two evaluation systems is the guarantee for establishing an excellent sports field lawn. Among them, STRI is more professional, and their researchers have made a lot of testing tools to simulate the various “pressures” that the stadium turf is subjected to, such as the shading caused by stadium construction and the destruction of turf by athletes’ spiked shoes, and the rebound rate of test balls. The rolling distance of the ball, the hardness of the surface of the court, the sliding friction of the court surface, the flatness of the surface, etc. If it is difficult to understand these specialized data, one of the easiest ways to obtain the best variety is to choose a product from a well-known company.

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