不同种植年限土壤微量元素对山银花品质的影响

目的]探索不同种植年限土壤微量元素对山银花品质的影响,筛选山银花高产优质的最佳种植年限范围。方法]采用野外调查和室内分析结合的方法,研究贵州省绥阳县不同种植年限山银花土壤微量元素对山银花品质的影响。结果]不同种植年限下土壤pH值为4.67~6.01,土壤微量元素平均含量为:Cu 17.17~37.50 mg/kg,Mo 1.52~2.24 mg/kg,Mn 444.6~544.26 mg/kg,Zn 102.06~114.39mg/kg;山银花花蕾微量元素平均含量为:Cu 6.91~14.52 mg/kg,Mo 0.16~0.24 mg/kg,Mn 30.06~79.36mg/kg,Zn 12.73~23.54mg/kg;不同种植年限山银花绿原酸含量为2.988%~7.840%。结论]土壤中Zn,Cu含量随种植年限增加而递增,Mo,Mn含量总体呈下降趋势。11~15a的山银花绿原酸含量最高,植物生长状况良好,花蕾微量元素含量总体随年限增加而增加。微量元素Cu,Zn能促进山银花的生长和绿原酸的合成,Mn元素与山银花的茎粗和叶片生长有关。

Effects of Soil Trace Elements on Quality of Lonicerae Flos in Different Cultivating Years

Objective] To explore the quality of the Lonicerae flos flower in different levels of soil trace elements in order to confirm the optimum planting years of Lonicerae flos in Suiyang County, Guizhou Province. Methods] Field investigation and laboratory analysis of a combination of methods were used. Results] In the soil, pH value was from 4.67 to 6.01, and the average contents of Cu, Mo, Mn, and Zn were from 17.17 to 37.50 mg/kg, 1.52 to 2.24 mg/kg, 444.6 to 544.26 mg/kg, 102.06 to 114.39 mg/kg, respectively. And in the buds of Lonicerae flos, the average content was from 6.91 to 14.52 mg/kg, 0.16 to 0.24 mg/kg, 30.06 to 79.36 mg/kg, 12.73 to 23.54 mg/kg for Cu, Mo, Mn, and Zn, respectively. At the same time, the chlorogenic acid content was from 2.988% to 7.840% for Lonicerae flos planted in different years. Conclusion] The contents of Zn and Cu in soil increase along with the increasing of planting years, but the contents of Mo and Mn decrease. The content of chlorogenic acid is at a higher level and the plants are growing well in 11 to 15 planting years. Trace elements contents in flowers show an upward tendency as a whole in the course of their planting years. The growth of stem and leaf of Lonicerae flos is greatly favored by Mn in soil with an additional favor from Cu and Zn, which helps the botanic growth and promotes the synthesis of chlorogenic acid.