我省苏北平原地区利用河堤、圩堤营造杉木幼林,普遍生长繁茂,并已相继郁闭成林.引种实践表明;河堤杉木林具有较高的生产潜力,11年生可达苏南良好立地22年生的生长水平.7—9年生树高年平均生长量0.60—0.84米,胸径0.9—1.2厘米,完全能 The use of embankments and levees in the northern part of Jiangsu Province for the construction of young Chinese fir plantations have generally experienced the growth and flourishing and have successively closed forests. The introduction practice shows that the riverside Chinese fir plantations have high production potential and the 11-year-olds can reach the southern Jiangsu good Site growth of 22-year-old level. 7-9 year-old trees average annual growth of 0.60-0.84 meters, 0.9-1.2 cm in diameter at breast height, completely