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杉木作为我国重要速生树种,在我国林业生产中占据不可或缺的重要地位,但其地力衰退问题日益显露,已引起相关学者的高度重视。文中通过查阅大量文献,在前人研究的基础上,首先论述了杉木人工林地力衰退特征,如土壤酸化、缺磷、富铝和化感等;而后从不同角度论述了杉木人工林地力衰退的原因,如酸沉降加剧、不适宜的营林活动、肥料施用不当等;并提出一系列维护措施,如轮作、营造混交林、追肥等;最后概述了杉木人工林地力衰退的最新研究进展及今后的研究方向。
As a kind of important fast-growing tree species in China, Chinese fir occupies an indispensable and important position in our country’s forestry production. However, the problem of the decline of soil fertility has become increasingly apparent and has drawn great attention from relevant scholars. Based on the previous studies, this paper first discusses the characteristics of the decline of the Cunninghamia lanceolata plantation, such as soil acidification, phosphorus deficiency, aluminum enrichment and allelopathy. Then, the paper discusses the decline of the soil fertility of Cunninghamia lanceolata plantation from different perspectives The reasons include the aggravating of acid deposition, improper silvicultural activities and the improper application of fertilizers. A series of maintenance measures such as rotation and cultivation of mixed forests and top dressing are also proposed. Finally, the latest research progress on the decline of the plantation productivity of Cunninghamia lanceolata Research direction.