从本所收到的信函来看,在1963～1964年度的种植季中,橡胶树椽色芽片的芽接成功率显然有很大的变异。令人担心的主要问题,是芽接苗在锯砧后的头几周内(通常在第一蓬叶健化前不久)死亡。芽条也往往在更早的阶段受侵害,但植株在长有健康的第一蓬叶后却很 From the correspondence received by this firm, it is clear that the success rate of sprouting of rubber tree rafters in the planting season of 1963 to 1964 obviously varies greatly. The main concern is the death of budded seedlings in the first few weeks after the saw anvil (usually shortly before the first panacea). Buds are also often infested at an earlier stage, but the plants are very healthy after the first Puffy