伞花木1年生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伞花木1年生播种苗高生长过程划分为4个时期:出苗期(3月11日~5月10日)、生长初期(5月11日~7月10日)、速生期(7月11日~9月10日)和苗木硬化期(9月11日~10月20日)。不同播种期的试验表明:冬播伞花木比春播伞花木提早21 d萌发,苗高、地径生长量和总生物量分别比春播提高14.5%、25.5%和45.8%。采用混沙湿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,伞花木育苗采用60株.m-2的密度较好。

The Study on Growth Regularity and Culture Technology of Eurycorymbus cavaleriei Annual Seedlings

Sequence sample cluster analysis was used to divide the height growth process of E.cavaleriei annul seedlings into four stage as follows: emergence stage(Mar.11～May 10),early growth stage(May 11～Jul.10),rapid growth stage(Jul.11～Sep.10) and hardenning stage(Sep.11～Oct.20).The tests of different sowing period indicated that the seed germination date sowing in winter were ahead of 21d in spring.The height,diameter and gross biomass of seedlings increased 14.5%,25.5% and 45.8% respectively compared to that in spring.The seed germination date was earlier and germination rates was higher while treated with wet sands than that of conventional one.The result of density test indicated the reasonable density of Handeliodendron bodinieri annual seedlings were 60 per square meter.