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以福建中心产区杉木人工林改进的全林整体生长模型为基础的收获模型和现行经济参数，研究在不间伐栽培模式下不同地位指数级杉木人工林的数量成熟和经济成熟规律．结果表明，数量成熟龄随着地位指数和初植密度的增加而提前；初植密度对林分数量成熟时的平均材积生长量影响不大；内部收益率成熟龄随着地位指数的增加而提前；较稀初值密度（1500株／hm2）的林分具有最大的经济效益．
The harvesting model and current economic parameters based on the improved whole plantation growth model of Chinese fir plantation in the central part of Fujian Province were used to study the maturity and economic maturity of exponential Cunninghamia lanceolata plantation under the pattern of no-till cultivation. The results showed that the number of mature age was advanced with the increase of position index and initial planting density. The initial planting density had little effect on the average volumetric growth when the number of mature stands was mature. The internal maturity of maturity increased with the increase of status index ; More dilute initial density (1500 / hm2) of the forest has the greatest economic benefits.