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杉木是我国南方温润气候型速生优良用材树种,其生长发育要求较高的水热条件和较好的生态环境。营林的实践愈来愈多地证明,集中成片营造纯林,将造成地力衰退,生态平衡破坏,生产力下降的不良后果。虽然人们已开始研究将不同生物学和生态学特性的树种与其适当混交,来改善生态环境,提高林地的总生产力,并在杉松、杉檫等混交方面积累了一定
Cunninghamia lanceolata is a kind of fast-growing and good-quality timber species with favorable climate and climate in southern China. Its growth and development require high hydrothermal conditions and better ecological environment. The practice of silviculture has proved more and more that the accumulation of pure forests in a single piece will result in the adverse consequences of the decline of the soil fertility and ecological balance and the decline of productivity. Although people have begun to study the different biological and ecological characteristics of the tree species and their proper mix, to improve the ecological environment, improve the total productivity of woodland, and fir, cedar and other hybrids have accumulated a certain