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矿质元素是直接影响林业生长、发育的营养物质.为了探明它在林木体内的代谢过程及其与生长关系,Bowersox、Hetherington等研究者曾对不同树龄、品种和立地条件进行广泛的研究,结果找出了土壤、林木养分含量和生长之间的相互关系,有的还导出了定量的数学表达式,为诊断林木对某种营养物质的需求程度、临界值、施肥期、施肥量等,并通过采取合理的经营措施,进一步提高林木的产量起到了一定作用.但还有许多理论和技术问题尚未完全解决.因此,近几年来,我们在杉木幼林中进行了不同施肥处理试验,定期测定针叶养分含量和生长量,以寻求它们之间的内在关系,为促进杉木的速生丰产提供必要的科学依据.
Mineral elements are nutrients that directly affect the growth and development of forestry.In order to find out its metabolic process in forest and its relationship with growth, Bowersox, Hetherington and other researchers have conducted extensive research on different age, variety and site conditions, the results Find out the relationship between soil nutrient content and growth of forest, and some also derived quantitative mathematical expressions, in order to diagnose forest demand for certain nutrients, critical value, fertilization period, fertilizer and so on, and However, there are still many theoretical and technical problems that have not yet been fully resolved, so in recent years, we conducted different fertilization treatments in young Chinese fir plantations, measuring the needles periodically Leaf nutrient content and growth in order to seek the intrinsic relationship between them, to provide the necessary scientific basis for promoting fast-growing and high yield Chinese fir.