白菜及甘蓝是我国最主要的叶菜。在生产上,这类蔬菜都用种子繁殖。但为了育种的目的,也可用扦插繁殖,来保持品系的遗传特性,及增加繁殖系数。对于甘蓝类的扦插繁殖,在国外早有报道。其中有的用生长素处理,有的不用生长素处理。用生长素处理时,大都以IBA(吲哚丁酸)40—80ppm,或NAA(萘乙酸)的20-40ppm,浸泡过夜(约16小时)。根据我们的试验,如果大白菜也用这种方法处理,既会抑制发 Cabbage and cabbage are the most important leafy vegetables in our country. In production, these vegetables are breeding seeds. However, for breeding purposes, cutting propagation can also be used to maintain the genetic characteristics of the lines and to increase the breeding coefficient. The cutting propagation of cabbage has long been reported in foreign countries. Some of them with auxin treatment, and some do not use auxin treatment. In the case of auxin treatment, most are immersed overnight (about 16 hours) with 40-80 ppm of IBA (indole butyric acid), or 20-40 ppm of NAA (naphthaleneacetic acid). According to our test, if Chinese cabbage is also treated in this way, it will inhibit the hair