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林地施肥是调节林分生态系统中矿质营养元素循环和促进林木生长的重要措施之一,特别是轮伐期短的速生用材林,幼林施肥能促进林木生长,使其早郁闭,早成材。为探讨人工幼林施肥技术,给今后大面积开展幼林施肥提供科学依据,我选择了速生的杉木幼林进行了定量施肥试验。现将同种常量营养元素试验情况整理如下:
Woodland fertilization is one of the important measures to regulate mineral nutrient cycling and promote forest growth in the stand ecosystem, especially the fast-growing timber forest with short rotation period. Fertilization of young forest can promote the growth of forest and make it grow early and grow early. In order to explore the technology of artificial young forest fertilization and provide a scientific basis for large area young fertilization in the future, I chose fast-growing Chinese fir plantation for quantitative fertilization experiment. The same kind of constant nutrient element test situation is as follows: