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应用逐步回归和通径分析，对土壤养分与黑琥珀李株产和冠幅增长的相关关系进行了研究，结果表明，土壤的有机质、水解氮、速效磷和速效钾 4 个养分因子对黑琥珀李株产和冠幅的增长都有着显著和极显著的相关关系，其中以速效磷对产量和冠幅的增长作用最为显著，并且 4 种土壤养分因子之间存在着相互关联、互为作用的关系，因此，施肥时应各种营养元素综合考虑，不能偏施。
The relationship between soil nutrients and growth of black amber plum and crown growth was studied by using stepwise regression and path analysis. The results showed that soil nutrients, nitrogen, available phosphorus and available potassium had a significant effect on the growth of black amber There was a significant and extremely significant correlation between the yield and crown growth of L. pluvialis. Among them, the effect of available P on growth and crown growth was the most significant, and there were interrelated and interactive effects among four soil nutrient factors Therefore, when fertilizing a variety of nutrients should be considered, not partial facilities.