中文摘要：

为提高杉木人工林的蓄积量，进行了袋控施肥试验对杉木的生长及生态化学计量特征的研究，结果表明：施肥后第3年，树高年均增长1．70—2．07m，其中处理A（6孔、施肥深度15cm）较空白对照的年增幅最大，施肥后第4年，树高年增长1．32～1．55m，所有施肥处理年增长量均高于对照，其中处理C（10孔、施肥深度15cm）增幅最大，达17．1％。施肥可以有效提高杉木人工林的蓄积量，处理C效果最佳。6孔施肥深度25cm袋控处理的肥效释放速度可能更适合植物的生长需求。肥料的施入可提高杉木人工林林地中土壤C、N、P养分的浓度水平，每个施肥处理土壤中的养分含量均高于空白对照。袋控施肥可使养分更有效地持续释放，保证杉木在生长发育期对养分的吸收，袋控处理C蓄积量增长量最大。

英文摘要：

In order to improve the stock volume of Cunninghamia lanceolata plantation, the growth and stoichiometric characteristics of C. lanceolata were studied under different fertilization methods. The results showed that： after three years of fertilization, the average annual growth of tree height was 1.70-2.07 m. Among them, compared with the blank control （ CK ）, there was the largest annual growth in treatment A （ 6 holes, fertilizer depth of 15 cm ）, and after four years of fertilization, the average annual growth of tree height increased by 1.32-1.55 m. The annual growth rate of all fertilizer treatments was higher than that of CK, and the maximum increase was 17.1% in the treatment C （ 10 holes, fertilizer depth of 15 cm ） . Bag controlled fertilization could effectively improve the stock volume of C. lanceolata plantation, treatment C had the best effect. The release rate of bag controlled fertilization with 6 holes and fertilizer depth of 25 cm may be more suitable for plant growth requirements. The application of bag controlled fertilizer could increase the concentration of soil C, N and P in the soil of C. lanceolata plantation, compared with CK. Bag fertilization can release nutrients effectively and consistently to ensure the growth of C. lanceolata, and the biggest stock volume growth was in treatment C.