木种源地处我国南岭山地杉木适生分布中心产区,是一个种质好、速生性强、生产力高、适应性广的优良种源。各地引种实践表明,它具有显著的增产效果,对提高杉木木材产量,振兴林业经济具有重要的作用。在江苏苏南低山丘陵宜溧山区,半个轮伐期(造林8年)时 Wood provenance is located in the South China mountains of Cunninghamia lanceolata distribution center producing areas, is a good germplasm, fast-growing nature, high productivity, wide adaptability of the good provenance. The introduction of practices throughout the country shows that it has significant yield-increasing effects and plays an important role in raising the output of fir wood and rejuvenating the forestry economy. Hilly in southern Jiangsu Yili mountain area, half of the rotation period (afforestation 8 years)