中文摘要：

以福建沙县官庄国有林场杉木第3代种子园高产母树和低产母树为研究对象,分析了土壤和叶片养分含量特征,并探讨了种子产量与土壤和叶片养分含量之间的关系,以期为指导杉木种子园平衡施肥提供理论依据.结果表明,除40-60cm土层低产母树土壤Mg含量显著高于高产母树外,其余土层养分含量总体表现为高产母树大于低产母树.利用Spearman相关系数分析了种子产量与土壤和母树叶片大量元素和微量元素之间的相关程度,结果表明,种子产量与0-20cm和20-40 cm土层中的Ca、Mn、N、K和Zn含量的相关程度较高,而且与Ca含量的相关性达到了显著水平（P＜0.05）；与40-60 cm土层的P、Zn、Mn和Mg含量的相关性较强,与P含量的相关性差异达到极显著水平（P＜0.01）,与Zn含量的相关性达到显著水平.由此可见,有针对性的补充母树所需的养分元素,进行配方施肥,是实现种子园高产、稳产的关键措施.

英文摘要：

A study was conducted to analyze the nutrient contents of high production and low production mother tree components （leaf） and soil and their relationships with seed production in 3rd generation Cunninghamia lanceolata seed orchard, which is located on Guanzhuang State Forest Farm, Shaxian County, Fujian Province. The objective of this study was to provide scientific evidence for balanced fertilization of the 3rd generation C. lanceolata seed orchard. The results showed that the soil nutrient contents in high production mother trees were higher than low production mother trees except that Mg content in high production mother trees was significantly lower than low production mother trees in 40 - 60 cm soil layers. Based on Spearman＇s correlation coefficient, the relationship between the seed yield and the macro-elements and micro-elements in leaves and soft of mother trees was analyzed. The statistical results showed a high degree of correlation between the seed yield and the contents of Ca, Mn, N, K and Zn, especially significant to Ca, in the 0 -20 cm soil layers and the 20 -40 cm soil layers, meanwhile remarkable correlation between the seed yield and the contents of P, Mn, Mg and Zn, especially extremely significant to P and significant to Zn, in 40 - 60 cm soil layers. Our findings suggest that formulated fertilization is the key strategy to make high and stable yield in the C. lanceolata seed orchard.