摘要
采用不同的种子催芽方法、育苗基质进行珙桐山地育苗试验，结果表明：露天覆沙低温催芽法出苗效果优于牛粪埋种催芽，出苗率提高17．1％；秋季播种优于春季，出苗率提高14．6％；腐殖质土育苗优于沙土，苗木高生长量、地径生长量分别提高59．3％和41．6％；育苗地最佳海拔为1250～1500131；春梢带二次枝扦插能够萌生不定根，而秋梢扦插不能萌生不定根．
The seedling breeding experiment of Davidiai involucrata was conducted with different seed treatment methods and varied substrates in the mountainous area. It was indicated by the results that： Low temperature stratification with river sand in the open air could promote seedling emergence rate by 17.1% compared to the method of burying the seeds in cattle manure. The seedling emergence rate by sowing in the autumn was 14. 6% higher than sowing in the spring. Humus substrate could increase the height growth and basal diameter growth by 59.3% and 41.6% respectively than those of regular sand substrate. The best seedlings of D. involucrata were bred at elevation range between 1 250 m and 1 500 m. Adventitious roots could take place on cuttings prepared from spring shoots with secondary sprouts, while there were no adventitious roots taking place from cuttings made of the autumn shoots.
出处
《西南林学院学报》
2007年第6期35-38,共4页
Journal of Southwest Forestry College
基金
陕西省林业厅[陕林科研字(2004-1)]资助项目
关键词
珙桐
山地育苗
育苗技术
Davidiai involucrata
sapling breeding in mountainous area
breeding techniques
