四倍体刺槐在昆明地区引种栽培试验初报

Preliminary Report on Experiment of Introduced Tetraploid Robiniq pseudoacacia's Cultivation in Kunming Area

从2006年4月开始进行四倍体刺槐引种栽培试验,3年多的观测试验结果表明,各类型四倍体刺槐适应性强,对土壤要求不严,耐干旱瘠薄,但以在疏松、肥沃、湿润的土壤中生长较快.不同立地条件,饲料型四倍体刺槐组培苗的高、径生长差异极显著;饲料型和速生型四倍体刺槐根繁苗的高、径生长也具有较大差异.同一立地条件,饲料型四倍体刺槐组培苗的高、径生长均显著大于饲料型和速生型四倍体刺槐根繁苗,也略大于二倍体刺槐;饲料型四倍体刺槐组培苗的叶片逐渐发黄和几乎全部脱落时间也较根繁苗晚10 d左右.饲料型四倍体刺槐组培苗是一个具有推广价值的荒山造林和园林绿化优良树种.

Tetraploid Robiniq pseudoacacia was conducted introduced cultivation in April of 2006. Over 3-year observation showed that all kinds of tetraploid Robiniq pseudoacacia had strong adaptability, drought and barren resistance, fast growth in soft, fertile and moist soil. Great differences were presented in seedling height and diameter growth of forage-typed Tetraploid Robiniq pseudoacacia under different site conditions and between forage-typed and fast-growing Tetraploid Robiniq pseudoacacia. Under same site condition, tissue cultured seedlings＇ height and diameter growth of forage-typed Tetraploid Robiniq pseudoacacia were extremely bigger than those of root seedlings of both Tetraploid or fast-growing Robiniq pseudoacacia, a little bit bigger than diploid Robiniq pseudoacacia. Tissue cultured seedlings＇ leaves of forage-typed Tetraploid Robiniq pseudoacacia were gradually getting yellow and completely fell down about 10 d later than rood seedlings. Therefore Tissue cultured seedlings of forage-typed Tetraploid Robiniq pseudoacacia were excellent tree species for extensive value for afforestation and making garden green.