Since the 1970s, artificial grass has been introduced into the football world, causing large-scale disputes in the international sports world. So far, the natural grass and artificial grass are still a big controversy in the sports world.Until the mid-1980s, FIFA and the National Sports Council jointly issued a unified standard for the evaluation of the quality of sports lawn sports, which made the arguments between the two have practical and objective criteria.So what does artificial grass and natural grass have effect on football?
First,The influence of two kinds of field elasticity on football
Because the natural grass plant fiber of the natural turf football field has limited elastic force, the elasticity of the soccer ball on the natural lawn is generally small, and the height of the high-altitude ball or the rebounding ball after landing is not very high, which is convenient for the athlete to pick up, stop the ball and control ball.However, the artificial grass of the artificial turf football field is mostly made of plastic fiber, which determines that it has good elasticity. The strength of the football flying at high altitude or half air will be great.This means that if the high-altitude ball or the rebounding ball is too strong in the game, it is not convenient for the athlete to pick up, stop the ball and control the ball. Athletes are required to adjust their position of stopping the ball and judge the rebound height and route of the football, which has an impact on the athletes' inherent skills and tactics.
Second, The influence of friction between two venues on football
The plant grass fiber of the natural turf football field has little friction for football, which determines that the football rolls on the natural lawn faster and the rolling distance is far.However, the chemical fiber grass of the artificial turf football field has a large frictional force on the soccer ball, and the ball falls to the artificial turf to be a little bit, and the rolling speed is slow, and the rolling distance is relatively close.The rolling distance can reflect the smoothness of the surface of the lawn. The measurement method is generally to place the standard ball on a triangular measuring frame with a height of 1 m and a hypotenuse and a horizontal angle of 45°, so that the ball slides down the chute and the ball is measured to contact the lawn. The distance after the ball stops rolling, the longer the distance, the smoother the surface of the lawn, and the rougher the lawn.The rolling distance is optimal at 3 to 12 m, and the acceptable range is when the rolling distance is 2 to 14 m. From the test, the rolling distance of the natural turf field is 4~15m; the rolling distance of the artificial turf field is 1~10m. From the measurement results, it can be seen that the artificial turf field is obviously more frictional than the natural turf field, and The large friction of the artificial turf also forces the athlete to consume more energy under the same time and the same intensity of exercise, and fatigue occurs prematurely, which seriously affects the athletes' skills and tactics.
Third,the influence of two venue football fields on the joint damage of players
When we watch the live broadcast of the game, we can often see the natural turf flying under the fierce confrontation. It is not that the turf is not strong. The take-off of the roots of the turf and even the soil actually plays a role in each joint. The protective effect, while on the artificial turf, at the top of the fly some rubber particles, so the joints and ligaments will bear greater stress in these intense movements, naturally causing strain and damage.As mentioned above, the speed of the ball on the artificial grass is faster and the rebound is higher, which accelerates the pace of the game invisibly, and the fast-paced confrontation will increase the chance of injury to a certain extent. At the same time, many players give the ball to the player. The short reaction time may also cause some unconscious unconventional movements that lead to injuries.
However, the flatness of the natural turf we are exposed to is difficult to match the artificial turf. It is also easy to cause joint damage due to the pits on the ground. On the other hand, playing on the natural turf will give the player an impulse to do difficult exercises. For example, sliding shovel, barbs, etc., will actually increase the probability of injury.
Fourth, the impact of the drainage function of the two venue football fields on football
The drainage system is the most important basis for the football field lawn.The construction of the football field must first consider the drainage problem.The drainage system of artificial turf includes above-ground drainage and underground drainage. The above-ground drainage generally drains through a certain slope (0.2%-0.5%), and the site can also be set to a middle high and low four to facilitate the removal of stagnant water. In addition, it is necessary to select a sandy loam that is good for water permeability and is permeable to water.However, relying solely on ground drainage is slow, so the more advanced football fields have underground drainage systems.Underground drainage systems are generally designed with drainage pipes in the foundation layer. Drain pipes are usually made of materials such as tile pipes and concrete pipes. There are many forms of layout, and different layout densities are designed depending on the rainfall.When the stadium is filled with water, the water seeps into the bottom of the base layer from the penetrating turf mat, and then the drain pipe collects and flows to the main pipe to the outside; the drainage system of the natural lawn is basically the same as the artificial turf.
Fifth, the impact of the lighting standards of the two venues on football
The quality of the lighting of a football field is mainly determined by the level of illumination, the uniformity of illumination and the degree of glare control achieved.The requirements of athletes, photographers and audiences vary.The degree of glare caused by the illumination device depends on the illumination intensity and illumination direction of the floodlight, the number of illumination devices, the position of the illumination device in the field of view, and the brightness of the surrounding environment.In fact, there is a tendency to determine the lighting device from a financial point of view. This is largely determined by the number of seats in the audience.The lighting standard of the venue depends on the viewer's visibility to the athlete, not only related to vertical illumination, but also to the illumination of the horizontal plane. Because the lawns of the two venues are different, the lighting standards cannot be the same.
Six, the impact of the two venues on the team's tactical play
Since the elastic and frictional force of the artificial turf football field is larger than that of the natural turf football field, the tactics originally set up must be temporarily re-arranged due to the venue.However, such tactical play has not been long-term cooperation, thus determining the tactical play of the football team is affected, especially for teams that like long-range rushing tactics, the excessive flexibility of the artificial turf football field will cause football. The change of the running track, which seriously affects the success rate of the tactical cooperation;For some teams with poor physical performance, the artificial turf football field has a greater friction against football and athletes' soccer shoes, so the athletes will consume more energy and exercise fatigue in the same intensity of exercise at the same time. The original tactical cooperation will not be effective; for the technical team accustomed to playing short-term cooperation, the greater friction of the artificial turf on the ball will affect the rolling speed and rolling distance of the ball, thus affecting the athletes. Control the rhythm of the game.
Conclusion: After reading the above comparison, you may say that the performance of artificial grass is almost completely inferior to that of natural grass. Is it that FIFA also promotes artificial grass? The Women's World Cup is still on artificial grass? !
It is beneficial to have disadvantages. The artificial grass has many advantages that natural grass can't match. It is well known that playing a game with a natural lawn requires two days of maintenance. The artificial turf can reach all seasons, all weather, 24 hours without interruption, and later. The maintenance cost is basically zero, and in the era of rapid development of technology, excellent artificial turf can pass the FIFA certification standard, and the performance is infinitely close to the natural lawn.
