Offspring Evaluation of Middle-age Growth in Different Generations Seed Orchars of Chinese Fir
In order to measure and evaluate the growth of different generations of Chinese fir seed gardens,materials of different regions and different generations of Chinese fir seed gardens were selected to build growth measurement stands,and the height,DBH and vol-ume per tree at the middle age of the stands were statistically analyzed.The results showed that there were extremely significant differ-ences among the offspring of different generations,which reached a statistically significant level.The growth difference of different sub-generations is real.The order of tree height,DBH and volume per plant was the same,which was Xiaokeng 2.5 generation>Xiaokeng 1.5 generation>Xinfeng 3 generation>Xinfeng 2.5 generation>Shaoguan common seed>Xinfeng 15 generation.Xiaokeng 2.5 gen-eration had the best growth.The results of this study prove that the offspring produced by the local high generation Chinese fir seed or-chard are more suitable and have better growth performance in the northern Guangdong Chinese fir cultivation area.
万方数据
维普
