枫香播种苗培育技术研究

本文总结了枫香一年生播种苗（１－０）培育中的种子催芽、苗期物候、年生长规律、苗木分级、合理育苗密度的实验研究，结果表明：枫香播种苗速生期较长，年生长过程中出现１次高生长高峰，２次地径生长高峰：采用３０ｍｌ／ｌＨ２Ｏ２或者５ｍｇ／ｋｇ三十烷醇水溶液浸种６小时，可提高场圃发芽率６０％以上；枫香（１－０）苗木分级标准是Ⅰ级苗地径≥０．９ｃｍ，苗高≥８７ｃｍ，Ⅱ级苗地径０．９～０．５ｃｍ，苗高８７～７５ｃｍ，Ⅲ级苗地径＜０．５ｃｍ，高＜７５ｃｍ；合理育苗密度为６５～８５株／ｍ２，每公顷产苗量６５～８５万株

Study on Cultivation Techniques for Liquidambar Seedlings

the cultivation techniques for Liquidambar formosana seedlings at one year,including seed stratification,seedlings phenological stage,growth law,seedlings grading and The rational density of cultivation have been studied.The results showed as followings:1)seed soaking in water for six hours by 30ml/lhydrogen perxide or 5 mg/kg triacontanol could increase field germinative rate above 60 percent;2)liquidambarformosana seedlings had a long fast-growth stage which had one peak for heighth growth and two peaks for diameter growth in ground;the seedlings grading standard for one year seedlings is that the first grade would exceed 0.9cm for diameter in ground and 87cm for height,the third grade would be under 0.5cm for diameter in ground and 75cm for height,and the scond grade would between them;4)the rational density of cultivation would be from 65 to 85 individuals per square meter,or 0.65 to 0.85 million individuals per ha.