In violin scale practice, the key bow techniques to improve performance level mainly include connecting bow, dividing bow, jumping bow, stopping bow, breaking bow, throwing bow, etc. The effective use of these techniques can not only showcase the overall level of the performer, but also accurately grasp the key factors of timbre. The correct bow techniques are of great significance for improving the level of violin performance, as they directly affect the expressiveness of timbre and the expression of musical emotions.

Specifically, the connecting bow and split bow are the foundation for constructing musical melodies, forming smooth or rhythmic musical lines through continuous or intermittent bow touches. Jump bow and pause bow are used to depict the dynamic changes in music, such as sudden changes in strength or emphasis on certain notes. The techniques of breaking and throwing bows are more commonly used to express the jumping and contrasting nature of music.

In addition, the correct bow holding posture, bow speed, and pressure are also crucial. The performer needs to maintain the correctness of standing and left-handed posture, while ensuring that the bow is held straight, stable, and flat, as well as conducting specific analysis from the speed, pressure level, and contact points between the bowstrings to meet the adaptability during performance. These factors can all have an impact on pronunciation, so in daily violin practice training assignments, performers should carefully study and learn violin bow techniques, and combine different performance contents and requirements to use different bow techniques reasonably.

In short, the key to improving performance level in violin scale practice lies in mastering and using bow techniques such as linking, splitting, jumping, stopping, breaking, and throwing, while paying attention to the correct bow holding posture and factors such as bow speed and pressure, in order to achieve better musical expression and emotional expression.