大叶铁线莲引种栽培与有性繁殖研究

Introduction Cultivation and Sexual Reproduction of Clematis heracleifolia

大叶铁线莲（Clematisheracleifolia）是黑龙江省森林植物园从辽宁省引种的地被植物.通过对其植物学特征、物候、适应性观测试验及有性繁殖试验.结果表明（1）大叶铁线莲能适应哈尔滨的土壤和气候特点,景观效果良好,宜大量繁殖推广.（2）其种子最适宜发芽温度为18-21 ℃.在21 ℃时发芽率最高,为70%,发芽势为58%;当年的种子发芽率最高,生命力最强,种子的发芽率、生命力随储存年限增加而下降.

Clematis heracleifolia,a kind of ground-covered plant,is introduced from Liaoning Province to Forest Bo-tanical Garden of Heilongjiang Province.Observation of botanical character,phenology,adaptability and sexual re-production for Clematis heracleifolia were conducted.Result shows that:(1 )Clematis heracleifolia can adapt to the soil and climate characteristics of Harbin area.The effect of landscape is optimal and should be promoted largly. (2)The optimum temperature of the seed germination is 18-21 ℃.Germination rate is the highest at 21 ℃,being 70%,and the germination potential are 58%.The germination rate of the seed are the highest in the very year.The vitality is the strongest.The germination rate and the vitality increase with the decrease of the storage years.