作者采用叶分析技术对中国东北地区笃斯越桔矿质营养元素年周期变化规律进行了研究。发现笃斯越桔叶片中各矿质营养元素的年周期变化规律具有一定模式,大多数营养元素在7月中旬至8月中旬处于含量变化相对稳定时期。此期为笃斯越枯叶分析的最适采样期。相关分析表明,土壤中营养元素的年周期变化规律与叶片中营养元素的年周期变化规律之间很少存在显著相关关系。 The authors used leaf analysis techniques to study the annual variation of mineral nutrients in Bells Bilberry in Northeast China. It was found that there was a certain pattern of annual variation of mineral nutrients in the leaves of Taxus chinensis. Most of the nutrients were in a relatively stable period from mid-July to mid-August. This period is the best sampling period of Bertherian leaves analysis. Correlation analysis showed that there was seldom significant correlation between the annual variation of nutrient elements in soil and the annual variation of nutrient elements in leaves.