推荐回答(5个)
1、重擦轻捺
所谓“重擦”,并不是用重力擦,而是要求把重点放在擦上,事实上还是用力稍轻地擦。“轻捺”, 捺是指的是按捺,也就是手持松香向弓毛施加的的压力,轻捺也就是擦松香时向弓毛施加的压力要适当放轻一点。
2、到头到边
所谓“到头”, 每次擦松香必须做到擦抵至弓尖、弓根两头;“到边”, 擦松香要擦到弓毛内外(上下)、左右,一般擦内外(上下)基本可涉及达到左右,但稍显不够的情况下,应左右再擦一下。
3、首次饱擦
新琴弓初次擦松香,一定要做到一次擦饱满。因首次上松香较费力费时,常见有人将松香用工具碾(或锤)成粉末,然后往弓毛上或洒或抹或伴,这种方法弄成的松香粉末粗细不匀,弓毛上不易挂香,而且又脏,这很不科学,很不可取。
4、勤擦匀擦
二胡琴弓松香要勤擦,一般拉2-3个小时擦一次,或依据弓毛磨擦力变小的需要擦一次,每次到头到尾到边地擦几个来回即够。每次擦松香要求必须做到用力均匀,持松香手臂运行轻松舒展流畅,不断地转动松香,使之均匀地摩擦弓毛,松香表面磨成沟壑,既节约又美观还能保证松香末细又匀。

扩展资料
松香被涂抹在二胡,提琴等乐器的弓毛上用来增大弓毛对琴弦的摩擦。以经过提炼的透明色块状松香为最好,油松上分泌凝固成的天然结晶松脂也可代用。
民间流行的打松香方法是:事先将一竹片劈一裂缝,接着把松香夹于当中。然后用火点燃竹片,使松香烫化后滴在琴筒上。这种方法称为"烫香"。烫香对于拉奏虽然较为方便、省事,但有碍于某些运弓技法的性能发挥,同时琴筒琴皮也显得不够清洁。
现在较为普遍流行的是"擦香",擦香即用松香直接在弓毛上来回的反复擦拭。这样擦一次松香后至少能拉一个钟头。实践证明,刚"擦香"后奏出的琴声并不十分理想,要在拉奏两三分钟后琴声才逐渐转为常态,擦香时,用力不可太重,以免擦断弓毛。
没有松香,琴弓在琴弦上拉奏的时候就会发滑而不能发出声音。用一点松香,弓毛会有一些粘性,拉奏的时候就会“抓住”琴弦让它震动以发出声音。松香买来的时候就是用布或小盒子包好的,它不但有粘性而且很硬,一般情况下可以用很长时间,越硬的松香越容易碎。
参考资料来源:百度百科-松香
参考资料来源:百度百科-二胡
呵呵,我的分析是:你的姿势不对,拉不出声音,或者是 你根本没有把玄绷紧,如果以上排除的话,那有可能是位于蛇皮和玄之间的木楔位置不对或者没有,如果这也排除的话那就是位于木楔上边的海绵位置不对或者没有,如果这也排除的话那就是蛇皮坏掉了.
以上是2胡主体的问题接下来是弓的问题:看看马尾是不是绷紧..
关于松香的上法:首先将2胡平放与两腿上(拜托,是大腿,你是坐着的)然后把弓力起来,手用拉2胡的姿势把马尾和竿分开绷紧,然后开始插,(错了,是擦)擦的时候中间别太用力,两头可以使点劲..就这些..你那什么2胡啊,就是一直不擦松香也不可能拉不出声音啊,怎么也会发点噪音啊或者是"咒怨"里鬼出来那种声音啊!!
我也很费解
买松香,有两种:一种要取适量松香块,将其压磨成末,再用手指沾上末在弓毛上轻轻涂抹.一种是直接在弓毛上来回摩擦,要均匀....还有,若弓毛是黑马尾的要上到变白为止,白马尾的则要上到弓毛变白,而不发亮为止.
有两种方式,一是将松香直接大在弓子上,要把马尾打成白色.二是将松香烫到琴桶上,注意烫时一不要烧到琴弦二不要让松香流到蟒皮上.新买的二胡先要用松香把弓子上的马尾全部打透才能用.
买块松香,先抹在弓上,抹透了。然后,拿火把松香点着了,把热松香滴在二胡上。注意别烧着琴弦。这样就好了。
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