(I) The function of blocking technique in the match \x0d\ Blocking is one of the basic techniques of volleyball and also an offensive and defensive technique. Successful blocking can directly stop the opponent's spike, weaken the opponent's offensive spirit, reduce the pressure of the back row's own defense, and create speculation for organizing counterattack, which is one of the important means to score and get the right to serve. \x0d\\x0d\ (II) Action method of blocking technology \ x0d \ x0d \ 1. Preparation posture: facing the net, feet parallel to shoulder width, 30-40 cm away from the net, knees slightly bent, arms naturally bent, and placed on the chest. Be ready to take off or move. \x0d\\x0d\ 2。 Move: In order to aim at the opponent's attack point, the blocking player needs to move in time. There are several commonly used mobile footwork methods: \ x0d \ x0d \ (1) parallel movement: this kind of movement is suitable for close use. The action method is that one foot takes a step to the right (left) and the other foot moves together. \x0d\\x0d\ (2) Sliding motion: Sliding motion can be used when the distance is about 2m. Moving continuously and step by step is a sliding step. \x0d\\x0d\ (3) Step action: This action is fast, has strong braking ability and large action range, and is suitable for middle and long distances. The action method is: when moving to the right, the body turns slightly to the right and the center of gravity moves to the right foot. Then the left foot takes a big step to the right from the front of the right foot, and then the right foot takes another step to the right. When the right foot hits the ground, the toes are inward, so that the feet stand parallel and the body faces the net. When moving, you can also take a small step to the right with your right foot, and other actions are the same as above. \x0d\\x0d\ (4) Running and moving: used when moving far away. The action method is: when moving to the right, the body turns right first, and the left shoulder faces the net. When running along the net to the take-off point, the left limb takes one step to brake, the right foot takes another step forward, and at the same time, the toes are inward, keeping the feet parallel as much as possible, and then bending your knees to take off. \x0d\\x0d\ 3。 Take-off: when taking off, the center of gravity is lowered, the knees are bent, and the degree of bending varies from person to person. Push your feet hard to the ground, and swing your arms upward in a small arc on your side to drive your body to take off vertically. After take-off, slightly tuck in your abdomen to control your balance. \ x0d \ x0d \ The take-off time of blocking must be well grasped and determined according to the level, distance and speed of the opponent's second pass, as well as the take-off time and action characteristics of the spiker. When blocking the high ball, it is generally later than the spiker; When blocking a fastball, you can take off at the same time as the main attacker, or you can take off early. \x0d\\x0d\ 4。 Hit the ball in the air: at the same time of take-off, both hands are close to and parallel to the net from the forehead and extend to the front of the upper edge of the net. Keep your arms straight, keep your forearms close to the net, and reach out to each other's sky to approach the ball during the day. Hands are naturally open, fingers and wrists are spoon-shaped. The distance between the two hands should not exceed one ball to prevent the ball from leaking between the two hands. When your hands touch the ball, your hands should be suddenly tense, and your wrists should be pressed down hard to cover the top of the ball. In order to prevent the opponent's attacker from going out of bounds, the outer palm should be turned inward when blocking the ball. \x0d\\x0d\ When blocking the spike from the far net, straighten your arm as far as possible, and don't press your wrist to improve the interception point. \x0d\\x0d\ 5。 Landing: If the ball has stopped, face your opponent, bend your knees to cushion and land your feet. If you don't catch the ball, you should turn around with it and prepare to save it in the direction where it flies. \x0d\\x0d\ 6。 Judgment of blocking: judgment is the key link of blocking technology, and judgment ability should run through the whole process of blocking. We should judge from the following aspects: judging the opponent's tactical play; Judging the spread of the other party; Judge the direction, arc, speed and landing point of the opponent's second pass; Judge the run-up direction and take-off time of the opponent's spiker, as well as the relationship between the take-off person and the ball and the swing of the arm in the air. At the same time, it is also necessary to judge the personal technical characteristics of the opponent's spike players. \x0d\\x0d\ (3) Coordination of collective blocking: \x0d\\x0d\ Collective blocking includes two-person blocking and three-person blocking. The purpose of collective blocking is to expand the interception surface of blocking. In addition to the requirements of individual blocking technology, it is more important to cooperate with the blocking players. The following problems should be paid attention to when coordinating collective blocks: \ x0d \ x0d \ 1. The collective block should determine who is the protagonist and cooperate closely to prevent fragmentation. \x0d\\x0d\ 2。 The main blocking team members determine the blocking center and cooperate with the team members to select the take-off point in time to avoid collision and interference during take-off. \x0d\\x0d\ 3。 After take-off, keep your arms at an appropriate distance in the air and try to enlarge the interception surface, but the distance between your hands should not be too large to avoid missing the ball. \x0d\\x0d\ 4。 Athletes of different heights should strengthen the coordination of take-off time. Generally speaking, tall athletes take off a little later than short athletes. \x0d\\x0d\ 5。 Change the players who are tall, resilient and good at blocking to the No.3 position or the position where the opponent's spike power is strong, and strengthen our blocking power. \x0d\\x0d\ (4) Mastering the practice method of blocking technique \ x0d \ x0d \ 1. Master the technique \x0d\\x0d\ (1) to reduce the net under simple conditions, and practice the blocking action by hand. \x0d\\x0d\ (2) Two people are standing on the net in front of the low net. One person lifts the ball online, and the other person does the blocking action in situ to experience the blocking hand. \x0d\\x0d\ (3) Take off with bare hands and block in front of the net. \x0d\\x0d\ (4) Do the footwork practice of blocking the net with bare hands in front of the net. \x0d\\x0d\ (5) Stand in pairs across the net. One person throws a high ball in front of the net, and the other person jumps to block the net, experiencing the take-off time and wrist pressing action. \x0d\\x0d\ (6) Set the net by two people, with one spiking and one blocking. \x0d\\x0d\ (7) The coach tackles the ball with a fixed route on the high platform, and the player jumps to block the ball. \x0d\\x0d\ (8) The coach tackles balls of different routes on the high platform, and the players jump up and block. \x0d\\x0d\ (9) When the opponent tackles the ball from position 4 in a relatively concentrated arc, we block the ball in turn at position 2. \x0d\\x0d\ (10) The opponent spiked at position 2, and we blocked the ball at position 4. \x0d\\x0d\ 2。 Consolidate the blocking technique under complicated conditions \x0d\\x0d\ (1) The opponent spiked at the 2 nd, 3 rd and 4 th positions, and our team blocked at three corresponding positions. \x0d\\x0d\ (2) The opponent spiked at position 4, and the player at position 3 moved to position 2 to form a double block. \x0d\\x0d\ (3) The opponent spiked at the No.2 position, and the No.3 player of our team moved to the No.4 position, forming a double block with the No.4 player. \x0d\\x0d\ (4) The opponent spiked at position 2 and position 4, and we moved to form a double block. \x0d\\x0d\ (5) The opponent stormed at the No.3 position, and our No.2 and No.4 players moved to the No.3 position, forming a three-person block with the No.3 player. \x0d\\x0d\ (6) Combine the different attack tactics of the opponent to form a double block. \x0d\\x0d\ (7) The opposing team continuously buckled balls with different arcs, distances and speeds at the No.2 and No.4 positions, and our blocking team continuously moved to block. \x0d\\x0d\ 3。 Improve the blocking technique under the condition of being close to the game \x0d\\x0d\ (1). The opponents do the practice of receiving and attacking, and we block all kinds of tactical balls in the front row. \x0d\\x0d\ (2) Counter-attack practice of blocking in front row and defending in back row. \x0d\\x0d\ (3) Immediately after blocking, prepare to catch the ball from the back row, counter-attack spike or transfer the ball. \ \x0d\\x0d\ (4 4) The other side organized a three-point attack, and our front row formed a collective block. \x0d\\x0d\ (5) Improve the blocking effect in offensive and defensive exercises. For example, four against four, six against six. \x0d\\x0d\ (5) Common block errors and their correction methods \x0d\\x0d\ 1. The blockade started too early. \x0d\\x0d\ Correction method: \x0d\\x0d\ (1) Analyze the take-off time of various spiking, and repeatedly realize the correct take-off time of blocking in practice. \x0d\\x0d\ (2) Using signal stimulation to improve the accuracy of judging the departure time. \x0d\\x0d\ 2。 Throw the ball with both hands when blocking the net, causing an online foul. \x0d\\x0d\ correction method: \x0d\\x0d\ (1) imitate blocking practice by hand. \x0d\\x0d\ (2) Stop the ball. \x0d\\x0d\ (3) Repeatedly practice the action of lifting the shoulder and pressing the wrist to block the ball. \x0d\\x0d\ (4) Stop spiking in the low net and experience arm movements. \x0d\\x0d\ 3。 When blocking and taking off, the foot crosses the center line or the body touches the net. \x0d\\x0d\ Correction method: \x0d\\x0d\ (1) Look at the signal, do in-situ or fast-moving take-off blocking exercises, and learn the last step of braking and vertical take-off. \x0d\\x0d\ (2) After taking off, do chest-hugging and abdomen-hugging actions in the air. \ x0d \ x0d \ 4。 When blocking the net, the hand is far away from the net, and the ball leaks from between the hand and the net. \x0d\\x0d\ Correction method: \x0d\\x0d\ (1) Practice taking off near the net with bare hands, and reach as far as possible above the opponent. \x0d\\x0d\ (2) Practice taking off in front of the net by combining with spike, and stretch your arms over the net. \x0d\\x0d\ 5。 The spiking route is misjudged. \x0d\\x0d\ Correction method: \x0d\\x0d\ (1) Look at the run-up route of the spiker and choose the correct take-off point. \x0d\\x0d\ (2) Observe the swing of the attacker and be ready to change the interception route at any time. \x0d\\x0d\ (6) Matters needing attention in learning blocking technology \ x0d \ x0d \ 1. Proficient in single gear technology. \x0d\\x0d\ 2。 Do more mobile blocking exercises. \x0d\\x0d\ 3。 Blocking practice should be combined with various spiking to improve the judgment ability of blocking. \ x0d \ x0d \ 4。 Strengthen mutual cooperation of collective networks.