柚木截杆苗培育技术研究

Study on Cultivation Technique for Stem-cut Seedling of Tectona grandis L. f.

通过持续15年对柚木进行试验育苗及大量生产性育苗,结果表明：种子催芽处理是柚木育苗成败的关键,催芽效果：综合处理法＞日晒夜浸法＞石灰浆浸沤法＞对照;苗木速生期在5～10月,苗木生长量占全年总生长量的73.3％;育苗节令选择4月最佳;幼苗分床以1～2对真叶移植为宜;全苗鲜重最能代表苗木的质量,现场操作的量化指标以苗木平均地径为主;D ＞2.5 cm为Ⅰ级苗,D=1.5～2.5 cm为Ⅱ级苗,D＜1.5cm为Ⅲ级苗.

15 years of continuous cultivation testing and mass production of Tectona grandis L.f.seedling breeding has been carried out.The results showed that the pre-germination treatment is a key to seedling breeding success of Tectona grandis L.f..The pre-germination effects order of four treatments in the sequence of decending was comprehensive treatment,solarization and night-leaching treatment,lime slurry treatment and no-treatment （CK）.The fast-growing stage of seedling was from May to October,which of increment accounted for 73.3 per cent of growth increment in the whole year.April was the best time for breeding seedling of Tectona grandis L.f.The young seedling by transplanting to bed was preferred with 1-2 pairs of true leaves.The seedlings grading standard for one year of stem-cut seedlings was that the first grade would exceed 2.5 cm for diameter in ground,the third grade would be under 1.5cm for diameter in ground,and the second grade would between them.