观光木播种苗生长规律及育苗技术研究

用有序样本聚类分析法将观光木1年生播种苗生长过程划分为4个时期:出苗期(2月26日-5月20日)、幼苗期(5月21日-7月20日)、速生期(7月21日-10月20日)和生长后期(10月21日-11月20日)。不同播种期的试验表明:冬播观光木比春播提早16 d萌发,苗高、地径生长量和总生物量分别比春播提高13.3%、15.1%和18.8%。采用沙藏可促进种子提早萌发和提高场圃发芽率。不同密度试验表明,观光木育苗采用60株.m-2的密度较好。

The study on growth regularity and the technology of grow seedlings of Tsoongiodendron odorum Chun

Sequence sample cluster analysis was used to divide the growth process of Tsoongiodendron odorum annual seedlings into four stages as follows: emergence stage(Feb.26～May.20),early growth stage(May.21～Jul.20),rapid growth stage(Jul.21～Oct.20) and late growth stage(Oct.21～Nov.20).The test of different sowing period indicated that the seed germination date sowed in winter were ahead of 16d in spring.The height,ground diameter and gross biomass of seedlings increased 13.3%,15.1% and 18.8% respectively compared to that in spring.The seed germination date was earlier and germination rate was higher while treated with wet sands than that of conventional one.The result of density test indicated the reasonable density of T.odorum seedlings were 60 individuals per square meter.