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林木体内营养元素水平具有一定的适宜范围,过高或太低均会影响林木的正常生长发育。而叶子是植物体最敏感的器官。因此,用叶分析评价林木生长状况及营养诊断的可能性正逐步得到证实。本文主要讨论几种林木常见生理失调症状与叶营养水平间的相互关系。一、方法对野外常见症状的植株(简称症状株,下同),针叶树采集针叶或鳞叶(侧柏),阔叶树采集叶片(去掉叶柄)。相邻的正常植株(简称健康株,下同)按同一部位同期采样,并进行相同处理的比较化学分析,以确定生理失调症状与叶内营养元素含量(或浓度)间的相互关系。对所采集的样品依次进行洗
Forest nutrient elements in the body has a certain range of appropriate levels, too high or too low will affect the normal growth and development of trees. The leaves are the most sensitive organs of plants. Therefore, leaf analysis to evaluate the status of tree growth and nutrition diagnosis is gradually confirmed. This article mainly discusses the relationship between several common tree physiological symptoms and leaf nutrient levels. First, methods Common symptoms of the wild plants (referred to as symptom strains, the same below), conifers needles or scales (arborvitae), broad-leaved tree harvest leaves (petioles removed). The adjacent normal plants (referred to as healthy strains, the same below) were sampled at the same site in the same period and subjected to the comparative chemical analysis of the same treatment to determine the correlation between the symptoms of physiological disorders and the content (or concentration) of nutrient elements in leaves. The collected samples were washed sequentially