目的：通过测定宁夏8个不同产区枸杞头茬、盛果期和秋果中总糖、多糖、甜菜碱、氨基酸、总黄酮、类胡萝卜素的量及百粒质量, 并分析总糖碱比, 研究枸杞中这些指标间以及它们与土壤肥力因子间的相互关系。方法：采用HPLC和分光光度等实验方法以及聚类分析、相关性分析和方差分析等生物统计方法。结果：枸杞中各指标被归为以总糖、甜菜碱和类胡萝卜素为代表的3类, 各指标受各种土壤肥力因子的作用不同。结论：总糖、甜菜碱和类胡萝卜素这3种成分及糖碱比值能较科学地评价枸杞的品质;施肥时应综合考虑各种肥力因子对枸杞成分的协同作用, 不宜片面考虑其单-的相关性。该研究为枸杞品质评价及合理施肥提供了依据。

Objective: The contents of total sugar, polysaecharide, amino acid, betaine, carotenoid, flavone. hundred-seed weight of Lycium barbarum fruits from eight different habitats in first stubble, prosperoustime, and autumn were determined and the ratios of totalsugar to betaine were analyzed, in order to classify these indexes, and investigate the relationship with the soll fertility factors. Methods: HPLC andUV-spectrophocometry methods were used to determine the contents and the results were analyzed adopting the clustering, correlation, and variance analysis. Results: All the indexes were divided into three parts which were total sugar, betaine, and carotenoid. Various indexes were affected in different degrees bythe soil fertility factors. Conclusion: The contents of total sugar, betaine, carotenoid, and the ratios of totalsugarto betaine could be used to assay the quality of L. barbarum fruits reasonably；The accumulation of eachingredientin L. barbarum fruits is affected by the synergistic effects of all the soil fertility factors, not a single role. It would be beneficial to the fertilization and improvement for the quality of L. barbarum.

国家科技专项(国科发财字[2006]9号, 国家科技支撑计划子课题(2006BAI06A15-11)