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以20年生高产脂马尾松半同胞家系子代林为材料进行产脂力分析,结果表明:马尾松半同胞家系间树高和产脂力均具显著差异;树高、胸径、产脂量和产脂力呈极显著的正相关;产脂力与温度呈正相关,与相对湿度及降雨量呈负相关,但均未达显著水平,可见马尾松产脂力受温度、降雨量与相对湿度3个气候因子的影响较小。采用双刀法采脂可明显提高产脂力。兼顾产脂力和生长量选出16个优良家系及22株优良单株。
The results showed that there were significant differences in tree height and fat-producing ability among half-sibs of Pinus massoniana from tree height, DBH, fat production and There was a positive correlation between fat production and temperature, negative correlation with relative humidity and rainfall, but no significant difference between them. The results showed that the fat production of Pinus massoniana was affected by temperature, rainfall and relative humidity 3 The impact of climate factors is smaller. Adopting double-knife method can obviously increase fat-producing ability. Taking into account the fat yield and growth, 16 elite families and 22 elite individuals were selected.