当年栽培而未成活的树桩盆土,如不消毒处理,直接再用来栽培新的树桩是不妥当的。因为在陈旧的盆土里含有大量损坏桩头根部的病菌。但弃之不用很可惜,尤其是在城市,土源来之不易。通过几年的实践,本人把陈旧的树桩盆土,消毒后再用来作新桩头的培养土,取得了比较满意的效果。具体作法是:先把 It was not proper to cultivate new stumps directly if they were not cultivated but then survived. Because in the old basin soil contains a lot of damage to the roots of the pile of bacteria. However, it is a shame not to abandon it, especially in urban areas, where the soil is not easy to come by. After several years of practice, I put the old stump pedestal, disinfection and then used to make a new pile of soil training, and achieved satisfactory results. The specific approach is: first