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利用造林密度对比试验与现有人工林分密度的调查结果，提出马尾松速生丰产林的适宜造林密度与不同培养目标的林木密度调控模型。结果表明：马尾松速生丰产林的造林密度以中密度为宜，植距在１．４ ｍ ×２．０ ｍ 和２．０ ｍ ×２．０ ｍ 之间，每公顷３ ５５５～２ ４９０株。试提出不同培养目标的林分密度调控管理模型如下：（１）小径材（１２～１６ ｃｍ ），伐期２０ ａ，立地指数１４～１６，造林密度３ ６００～３３００株·ｈｍ － ２、最终保留密度２ ３４０～２ １４５株·ｈｍ － ２，年均材积生长１１．６１～１４．５４ ｍ ３·ｈｍ － ２。（２）中径材（１８～２４ ｃｍ ），伐期２５ ａ，立地指数１６～１８，造林密度２ ７７５～２ ４９０株·ｈｍ － ２、最终保留密度１ ５６０～１ ３９５株·ｈｍ － ２，年均材积生长１３．０２～１７．４７ ｍ ３·ｈｍ － ２。（３）大径材（２６～３２ ｃｍ ），伐期３０ ａ，立地指数１８～２０，造林密度１ ９９５～１ ７２５株·ｈｍ － ２、最终保留密度９００～７５０株·ｈｍ － ２，年均材积生长１６．２０～１６．７６ ｍ ３·ｈｍ － ２。
Based on the survey results of comparison between afforestation density and stand density of existing plantations, the optimal model of afforestation and planting density of fast-growing Pinus massoniana stands was proposed. The results showed that afforestation density of Pinus massoniana fast-growing and high-yield stands was medium density, and the planting distance was between 1.4 m × 2.0 m and 2.0 m × 2.0 m, with 3 555-2 490 plants per hectare . Proposed different cultivation objectives of the stand density control management model is as follows: (1) small diameter timber (12 ~ 16 cm), cutting 20 a, site index 14 ~ 16, planting density 3600 ~ 3300 plants · hm - 2, The reserve density ranged from 2 340 to 2 145 plants · hm -2, and the average annual volume increased from 11.61 to 14.54 m 3 · hm -2. (2) Medium diameter timber (18-24 cm), cutting time 25 a, site index 16-18, planting density 2775-2 490 plants · hm - 2, and final preservation density of 1 560-1 395 plants · hm -2 , Annual average volume growth of 13.02 ~ 17.47 m 3 · hm - 2. (3) Large diameter timber (26 ~ 32 cm), cutting time 30 a, site index 18-20, afforestation density 1 995-1 725 plants · hm -2, final retention density 900-750 plants · hm -2, Average volume growth of 16.20 ~ 16.76 m 3 · hm - 2.