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１９８５ 年春用栽杉保阔法和传统育林法，在江西省吉安地区武功山林场营造杉木试验林，研究不同育林法对林地土壤肥力的影响。经１０ ａ 的观测初步取得林地土壤有机质、全氮量增加的试验结果。为进一步探讨其机制，采用凋落物层形态调查和室内堆腐实验相结合的方法，观察两种不同林分凋落物层性状和分解速率。分析表明，在营林过程中，栽杉保阔法保留了林地上萌生和侵入的阔叶树种，其凋落物层中增加了阔叶成分，林地凋落物的结构、性状和分解速率，均优于传统育林法，且凋落物层的酸度有所降低，土壤有机质含量略见增加。
In the spring of 1985, the Chinese fir plantation was used to cultivate the Chinese fir plantation in the Wugongshan Forest Farm in Ji’an, Jiangxi Province to study the effects of different cultivation methods on soil fertility. After 10 years of observation, preliminary results of soil organic matter and total nitrogen in forest soil were obtained. In order to further explore its mechanism, litter layer morphology and indoor composting experiments were used to observe the litter layer traits and decomposition rate of two different stands. The analysis showed that in the process of silviculture, the broadleaved tree species of Betula stearothermophylla was retained in the forest and the broad-leaved component was added to the litter layer. The structure, traits and decomposition rate of litter in the forest were better than The traditional method of afforestation, the acidity of litter layer decreased, and the content of soil organic matter slightly increased.