我们讨论的专题题目很好,范围很大,但主要问题是没有苗源。上海这些年,市场行为占主导,行政作用越来越微乎其微。从我工作涉及到的植物规划和引种驯化两个 The topics we discussed were very good and ranged, but the main problem was that there was no source. In recent years, Shanghai has dominated market behavior and its administrative role has become more and more negligible. From my work involved in plant planning and introduction of domesticated two