我们看到日本关于用插叶法栽植甘薯高产的报道,联想起早在1964—1965年我们薯类组曾经以薯类无性变异基本理论探讨为课题,作过类似的研究。当时研究的目的,是想在特殊或者异常情况下,强使其在无芽原基的部位硬逼出新芽,以观察其是否可以产生新的无性变异材料,因此在取材上只用带有三分之二长度叶柄的叶片。用一定浓度的高锰酸钾、草木灰或者奈乙酸液浸后,直接在沙性土壤栽植成活。这样,就免去了经常出现新芽和摘除枝条的劳动。如果当时稍有一些生产观点,考虑到插叶繁种在生产 We have seen reports from Japan about the high yield of sweet potato plants planted by leaf planting method. It is reminiscent of a similar study conducted by our potato group as early as 1964-1965 on the basic theory of potato asexual mutation. At that time, the purpose of the study was to force it to forcefully extract new shoots from bud-free primordia under special or abnormal conditions to see if they could produce new clitoral materials, so only three Leaves of petiole in length. With a certain concentration of potassium permanganate, ash or acetic acid immersion, directly in the sandy soil planted alive. In this way, there is no need for the labor of frequent emergence and removal of branches. If at that time a little bit of production point of view, taking into account the leaf in the variety of production