民族弓弦乐器在结构上有很科学的部份。琴弓的运行方向与琴面近乎垂直,使琴体对于弦的振动能量具有较高的吸收效率。二胡皮面的面积不大而能发出如此美妙的声音,一把小的板胡却能从一个管弦乐队中突出出来,这些功劳无疑是属于达种垂直性质的运动。因此,我以二胡的造型为基础进行了民族低音拉弦乐器的改良试验,并且收到了较为理想的效果。下面把试验的情况作一简要介绍。事物总是利弊并存的。琴弓夹在琴弦中间,势必产生擦弦点固定化的毛病,高把位 National bow stringed instrument has a very scientific part of the structure. The running direction of the bow is nearly perpendicular to the piano face, so that the body has a high absorption efficiency for the vibrational energy of the string. Erhu leather surface area is not large and can make such a wonderful voice, a small board but can be highlighted from an orchestra, these contributions undoubtedly belong to the vertical nature of the movement. Therefore, on the basis of Erhu’s style, I conducted a test of the improvement of the national bass-laced stringed instrument and received a satisfactory result. The following test conditions for a brief introduction. Things always have the pros and cons coexist. Clamps the bow in the middle of the string, it is bound to produce a string of points fixed problems, high position