| Football has a history of several hundred years,the Football technique and tactics have developed from point to face,from plane to three-dimensional,from early single attack route and means to rich and varied tactics and tactics,forming a multi-dimensional technical and tactical system in space.The technical and tactical performance of the football team(players)in the match is based on its accumulated competitive ability in daily training,and takes the match as the display platform.By making full use of the space,the football team(players)can maintain the depth and width,so as to obtain enough offensive space.Based on the comparative analysis of the technical and tactical performances of the Chinese team and its opponents in the top 12 Asian qualifying competitions of the 21 st Men's Football World Cup,this paper chooses the soccer technical and tactical performances of the Chinese team and its opponents in 10 matches of the top 12 matches as the research object,and combines the physical and psychological qualities of the relevant teams(players)in the matches and the level of sports performance.The tactical performance is compared and analyzed,so as to further analyze the reasons leading to the present situation.Among them,the specific quantitative data of the relevant evaluation indicators are counted as the information source,and the thermal graph analysis method is used to explore the running coverage of the relevant players on the field.Combining with the actual match videos,taking video observation as the dominant method,combining with literature and mathematical statistics research methods to collect and process relevant information and data,the purpose is to provide reference for the next training of Chinese men's football team,and make the training more targeted and scientific.Through the comparative analysis of the technical and tactical performances of the Chinese team(players)and their opponents in the competition,the following conclusions are drawn:1.In terms of ball control technology: China is superior to its opponents in corner kick and free kick.The ball control technology with the highest correlation degree with the number of goals scored by China is shooting(relative correlation degree = 0.705000),followed by corner kick(relative correlation degree = 0.613565).This shows that China can make better use of corner kick opportunity to score,but its ability to shoot the goal is poor,which directly affects the middle.The goal quality of the national team in the match.The most relevant technique to the number of goals scored by opponents is the free kick in the front court(relative correlation = 0.605355),followed by the free kick(relative correlation = 0.594692),which indicates that the opponents are prone to form a direct offensive situation in the course of the match,especially in the free kick in the front field.In view of this situation,first of all,in the training process,the Chinese team should pay attention to the training of the ball-free running consciousness of the players without the ball,and cooperate with each other to cover it;at the same time,it should strengthen the players' technical and tactical cooperation practice of serving free kicks and set-pieces in different situations,and improve the players' understanding of their tactical tasks in different service situations while developing the relevant technical level.Degree,can have a clear understanding of their own tactical positioning,and in the game to better understand the application.2.About the offensive technology,the success rate of Chinese team's passing in the offensive area of 30 meters is lower than that of its opponents,showing a significant difference(P < 0.05).The offensive techniques that have the highest correlation with the number of goals scored by Chinese team are shooting from outside the restricted area(relative correlation = 0.705000),shooting from inside the restricted area(relative correlation = 0.733333).Combining with the game video,Chinese team shoots mostly with one foot,but the lack of one foot shooting requires the player to have very high shooting skills,and it is easy for the defender to see the intention in advance and do it in time.Out of response,resulting in the loss of goal opportunities.The most relevant offensive technique to the number of goals scored by opponents is passing(relative correlation = 0.673905)and shooting in the restricted area(relative correlation = 0.642108),which shows that most of the opponents scored in the restricted area by side pass.In view of this situation,on the one hand,in the following training,the Chinese team should strengthen the cooperation level of the players after attacking the 30 m zone,so as to give the ball-control players a certain time to adjust through cooperation,avoid the players rushing to start and lose the hard-won goal opportunities;on the other hand,it should pay attention to improving the passing and receiving ability of the team under the overall fast state and high confrontation state.In order to improve the quality and efficiency of attack.3.About the defensive technology,the defensive pressure of the Chinese team mostly comes from the midfield.The defensive technical index with the highest correlation degree with the number of goals scored by Chinese team is blocking passing(relative correlation degree = 0.770937)and stealing(relative correlation degree = 0.667572).This shows that Chinese team relies on close-up blocking or stealing to carry out counter-attack in the defensive process,but it is difficult for Chinese team to reverse the offensive and defensive situation when confronting the stronger team.The defensive technical index with the highest correlation degree with the number of goals scored by the opponent team is foul(relative correlation degree = 0.615452),followed by encirclement(relative correlation degree = 0.608704).This shows that the opponent team is relatively straightforward in the process of handling the ball right,and can recapture the ball right to launch an attack.It also shows again that the Chinese team has insufficient grasp of the free kick.At the same time,the yellow card ranks third in the correlation degree with the number of goals scored by the Chinese team(relative correlation degree = 0.584048),indicating that "tactical fouls" also play a certain role in the process of the Chinese team's transition from defensive to offensive.In view of this situation,we should pay attention to the balanced development of offense and defense,improve the players' awareness of marking,return to defense in time in the process of defense,avoid defensive loopholes,improve the importance of decisive use of "tactical fouls" in the necessary situation,and make timely treatment of the coming ball.4.When the Chinese men's football team is stronger than its own team in the match,because of the big gap between the strength of the two sides,the range of running on the field is mostly suppressed.Over-emphasis on defensive tactics is not ideal,but the use of a more balanced development of offensive and defensive tactics system can further promote players' understanding of their own tactical tasks,making the team more efficient and integrated in the implementation of tactics.5.In the face of a team whose strength is slightly stronger than itself or comparable to its own strength,simply focusing on defense will make the Chinese team lose a lot of opportunities to attack.Although the offensive tactics are constantly focused on,due to the lack of caution in the performance of the Chinese team(players),the lack of tacit understanding between players,and the lack of a thorough understanding of tactical intentions,resulting in a more chaotic organization of the Chinese team's midfield.The efficiency of attack-defense conversion is not ideal in the match,and it is easy to have defensive loopholes.6.When the match strength is weaker than the team itself,the Chinese team can show its competitive strength to complete the tactical intention,but the offensive means are not rich,and it is easy to be targeted by tactics in the field,but there is a situation of inadequate response.In the competition,adopting some more powerful offensive tactics will achieve unexpected results.7.In view of the tactical performance of the Chinese team in the match,first of all,in the following training,it is necessary to strengthen the concept of fast forward attack after the players turn from defense to attack.As long as there is a chance of switching from defense to attack in any area of the court,the first ball-holder should have the idea of quick creation of forward attack and goal-scoring,and each player should have a clear understanding of the responsibilities and obligations after the switch from defense to attack.Secondly,in training,it is necessary to improve the players' ability to observe the position of defensive players at the time of changing from defensive to offensive,enhance the sense of position of themselves and their teammates at the time of changing from defensive to offensive,so as to quickly make the most suitable choice of offensive ways,establish tacit understanding of fast offensive among players,and so on,so as to enhance the ball's ability to observe the position of defensive players at the time of changing from defensive to offensive.The decision-making ability of players in different areas of midfield from defense to offense should be started as a whole.Finally,the division of players' marking in the field should be strengthened to ensure that the team enters the defensive state in an efficient and orderly manner.8.From the overall level of football technical and tactical performance,the difference of correlation degree between Chinese team's goals and various football technical indicators is about 0.25,while that of the opponents is only about 0.13,which shows that Chinese team relies heavily on one or several football techniques.Chinese team lacks the players who can grasp the "one foot at the door" highly,and the tacit understanding between players in the game is low,which leads to inefficient completion of the final tactics.In the following training process,in order to improve the shooting skills of the players,we should pay attention to strengthening the overall development of the players' football skills,improve the balance of the players' technical and tactical levels,so that the Chinese team can avoid the embarrassing situation of technical disadvantage or over-reliance on one or several football techniques on the court. |
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