摘要
以1a生喜树留床苗为试材,研究了截干高度和密度对喜树叶片生物量的影响。结果表明:不同截干高度、密度及截干高度与密度组合对喜树留床苗的叶片生物量有显著影响。在密度为每行10株的情况下,喜树留床苗不同截干高度萌芽苗的叶片生物量从高到低依次为25cm>20cm>15cm>10cm;在1m宽的苗床上,喜树留床苗每行10株比5株萌芽苗的叶片生物量高31.3%;不同截干高度与密度组合萌芽苗的叶片生物量从高到低依次为25cm×10株>20cm×10株>25cm×5株>15cm×10株>20cm×5株>10cm×10株>15cm×5株>10cm×5株,排前4名组合的生物量分别是最低组合的178.3%、182.2%、196.4%和222.4%,故喜树留床苗以每行保留10株且在20～25cm高度截干为好。
Taking 1-year-old Camptotheca acuminata Decne in bed seedlings as test material, the effect of stump height and density on leaf biomass of Camptotheca acurninata Decne were studied. The results showed that different cutting heights, densities and combinations of height and density had a significantly effect on leaf biomass of seedlings. At a density of 10 stems per line,the order of leaf biomass of germination seedlings in different cutting heights from high to low was 25 cm〉20 cm〉15 cm〉10 cm;in 1 meter wide seedbed,leaf biomass of 10 stems per line was 31.3% higher than 5 stems per line. In different combinations of height and density, the order of leaf biomass of germination seedlings from high to low was 25 cm×10 stems〉20 cm×10 stems〉25 cm× 5 stems〉15 cm×10 stems〉20 cm× 5 stems〉10 cm×10 stems〉15 cm× 5 stems〉10 cm× 5 stems, the top four biomass were 178. 3%, 182. 2%, 196. 4% and 222. 4%as much as the lowest respectively. Therefore, 10 stems per line and cutting height of 20-25 cm gave the best result.
出处
《北方园艺》
CAS
北大核心
2013年第9期81-83,共3页
Northern Horticulture
基金
2008年度广西教育厅科研资助项目(200809MS127)
关键词
喜树
截干高度
密度
生物量
Camptotheca acuminata Decne
cutting height
density
biomass
