【摘要】 从圃地选择(育苗地条件、土壤改良、整地方法)、种子处理(精选方法、冰藏方法、催芽方法)、播种(播种时间、播种方法)、苗期抚育管理(水分管理、追肥管理、病虫鸟害防治、间苗、除草)等几个关键环节对华北落叶松育苗技术进行研究,总结出有针对性、可操作性强的华北落叶松速生丰产育苗技术,使1年生华北落叶松播种苗平均高33.31 cm,平均地径4.06 mm,平均根长24.48 cm,木质化充分,当年即可出圃造林。更多还原

【Abstract】 The breeding technology of Larix principis-rupprechtii has been studied on nursery location selection(nursery condition,soil improvement,land preparation),seed treatment(choiceness,ice storage,pregermination),sowing(sowing time,sowing method),tending management in seedling stage(water management,fertilizer management,pest and insect control,thinning,weeding).By use of this technology,the average height of one-year seedling of Larix principis-rupprechtii can reach to 33.31 cm,the average ground diameter can reach to 4.06 cm,the average length of root is 24.48 cm.The seedlings can be used to plant with fully lignification in the same year.更多还原