摘要
为了解贵州省林业厅2003年在贵州省绥阳县宽阔水保护区实施的666．67hm^2（10000亩）省级柳杉速丰林的生长状况，总结在同类地区营造柳杉速丰林适宜立地条件和技术措施，对在基地内28个固定样地2004—2008年林分生长状况进行了监测。结果表明，柳杉林在黔北绥阳（海拔1000～1500m）及同类地区，基地林分整体健康状况良好，但丢荒地的健康状况不如宜林地和灌丛地；在不同坡向、海拔、土壤、植被杀件下生长状况和生长量不一样；柳杉裸根苗和容器苗在此类地区均可营造速丰林，但裸根苗的速丰效果比容器苗略差；第3年生长量开始呈高峰期生长；5年后平均树高2．49m（75％的林分平均树高大于2．0m），平均地径5．1cm，速丰效果明显。对土壤较薄，肥力欠缺和灌草植盖度较大的地块，应增设抚育1～2次，采取刀锄并抚的方法，并适量追施肥料。
The stand growth condition of 28 fixed sampling plots in the cryptomeria base was continuously determined from 2004 to 2008 to know the growth condition of fast-growing crytomeria forest in Guizhou Kuankoushui national nature preservation zone and to summarize the suitable soil condition and technological measures for building fast-growing crytomeria forest in other similar areas. The results showed that crytptomeria trees can normally grow Suiyang county with an elevation of 1 000-1 500 meters and other similar areas, but the growth state of crytpromeria trees planted in the wasteland is not as good as that of crytptomeria trees planted in the suitable tree growth land and brush land, the growth state and increment of crytptomeria trees varies with different slope orientation, elevation, soil and vegetation conditions, the crytptomeria seedlings without soil and with soil both can be used in the zone but the fast-growing effect of seedlings with soil is better than that of seedlings without soil, the peak growth period of crytptomeria seedlings begins at the third year after transplanting and the average tree height and crown diameter can be up to 2.49 m and 5. 1 cm respectively. The crytptomeria trees planted in the lands with thin soil layer, infertile soil and high cover degree of vegetation with brush and grass should be rational fertilized and increased the time of field management.
出处
《贵州农业科学》
CAS
北大核心
2009年第7期136-140,共5页
Guizhou Agricultural Sciences
基金
贵州省林业厅项目"贵州宽阔水保护区省级速生丰产林基地建设"(SPL-305)
关键词
柳杉
速丰林
造林
绥阳
贵州
cryptomeria
fast-growing forest
afforestation
Suiyang county
Guizhou
