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采用６种不同密度营造池杉林，经１４ａ的观测，对林分的平均胸径（Ｄ）、平均树高（Ｈ）、平均单株材积（Ｖ）、单位面积蓄积生长量，以及经济材积、经济出材率、木材总产值、成本、间作物纯收入、总利润比较分析结果表明：不同密度的林分以密度１６６６株／ｈｍ２（株行距１５ｍ×４ｍ）的林地综合经济效益最高，平均每公顷每年可获（木材＋间作）纯收入２０２４元，比密度１６６６株／ｈｍ２（株行距２ｍ×３ｍ）的林地综合经济效益提高５９％，比其他密度林地的综合经济效益提高２３２％～５３１％。
Six different densities were used to construct Ipomoea japonica. The average diameter at breast height (D), average tree height (H), average single plant volume (V), accumulated growth per unit area, The results of wood yield, wood output, cost, crop net income, and total profit showed that the forest with different densities had the highest comprehensive economic benefit with the density of 1666 plants / hm2 (plant spacing 15m × 4m) The annual net income of 2024 yuan per hectare (wood + intercropping) is 524% higher than that of 1666 plants / hm2 (spacing of 2m × 3m), and 23% higher than that of other density woodlands. 2% ~ 53 1%.