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在缓坡、轻微水湿地、农耕地等不同立地进行水曲柳人工造林,以农耕地为最佳,其次是缓坡。农耕地10 a生水曲柳人工幼林平均树高为5．430 m,为其它立地水曲柳人工幼林树高均值的150．0％,单位面积立木蓄积为其它立地立木蓄积的158．3％,树高、胸径最大值分别为6．80 m和7．3 cm,表现出较强的生长优势。水曲柳人工林生长规律为:3 a、6 a生时,树高、胸径、材积生长开始加快,速生期内胸径、树高连年生长量分别在0．40-0．67 cm之间和0．500 0-1．000 0 m之间。采用Riehards曲线进行水曲柳人工幼林树高生长过程拟合,结果为H=8．773 545×[1-EXP(-0．217 416 5 X)]3.574 767。
Artificial planting of Fraxinus mandshurica was carried out on different sites such as gentle slope, slight water wetland and agricultural land, with the farmland as the best, followed by the gentle slope. The average tree height of artificial young stands of 10-day-old Fraxinus mandshuricus plantation was 5.430 m, which was 150.0% of the mean value of tree height of artificial stands of Fraxinus mandshurica on farmland. The volume of standing tree stands per unit area was 158.3% , The maximum height of tree height and the diameter of breast diameter were 6.80 m and 7.3 cm, respectively, showing a strong growth advantage. The growth pattern of Fraxinus mandshurica plantation was as follows: tree height, DBH and volume growth began to accelerate at 3 a and 6 a, and the DBH and tree height in fast growing stage were 0.40-0.67 cm 0.500 0-1.000 0 m. The Riehards curve was used to fit the tree height growth process of Fraxinus mandshurica, and the result was H = 8.773 545 × [1-EXP (-0.217 416 5 ×)] 3.574 767.