Studies on the seedling growth and photosynthetic characteristics of Phoebo chekiangensis Shang
CHEN Yong-xia~1,YANG Yong-kang~2(1.Soil and Wood Engineering College, Nanjing Forestry University, Nanjing 210037, China; 2.Jiangsu Province Haimen City Forest-Fruit Technique Station,Haimen 226100,China)
Based on experiment and investigation in Nanjing region, the photosynthetic and growth characteristics of Phoebo chekiangensis were studied. The results were drawn as follows:(1)During seedling period, Phoebo chekiangensis grows up according to Y=a×e~(bX), with height-growth exponent equation Y=7.106 2e~(1.058 4X) (R~2=0.960 8), diameter-growth exponent equation Y=15.841e~(0.452 1X) (R~2=0.998 0) and root-growth exponent equation Y=0.254 6e~(0.600 9X) (R~2=0.989 4);(2)Phoebo chekiangensis seedlings develop main roots even in nursery period;(3)Three-year-old Phoebo chekiangensis seedling, whose light saturation point(LSP) was up to (1 200 μmol·m~(-2)·s~(-1)) and light compensation point(LCP) (20 μmol·m~(-2)·s~(-1)), showed suntree’s characteristics.
【CateGory Index】： S792.24