摘要
为了比较不同氮用量水平下中国北方地区油松幼苗生长及其生物量的变化,特开展研究。结果表明,在施氮为10 nmol·L^-1时幼苗最高,为1.44 m,在施氮量为20 nmol·L^-1处理下,油松幼苗基径最粗,为37.45 mm;以不施氮肥的处理根生物量最大,为120.21 g;随着浓度的增加,茎生物量逐渐降低,5 nmol·L^-1处理的茎生物量最大,为192.41 g,施氮浓度为10 nmol·L^-1处理下叶生物量最大,为37.13 g。
In order to compare the growth and biomass changes of Pinus tabulaeformis seedlings in northern China under different nitrogen levels,this study was carried out.The results showed that when nitrogen application was 10 nmol·L^-1,the seedling was the highest,which was 1.44 m.When nitrogen application was 20 nmol·L^-1,the basal diameter of Pinus tabulaeformis seedling was the thickest,which was 37.45 mm;The root biomass of the treatment without nitrogen fertilizer was 120.21 g;With the increase of concentration,the stem biomass decreased gradually.The stem biomass treated with 5 nmol·L^-1 was the largest,192.41 g,while the leaf biomass treated with 10 nmol·L^-1 nitrogen was the largest,37.13 g.
作者
张晓伟
Zhang Xiaowei(Jianping County Forestry and Grassland Bureau, Chaoyang 122400)
出处
《湖北林业科技》
2020年第4期32-33,41,共3页
Hubei Forestry Science and Technology
关键词
油松
氮肥
生长
生物量
Pinus tabulaeformis
nitrogen fertilizer
growth
biomass
