北京怀柔板栗种植区地质背景研究

Study on Geological Background of Planting Chestnut Region in Huairou District, Beijing

通过对北京怀柔板栗种植区的地质特征和土壤地球化学特征进行研究,发现其广泛发育的花岗岩和片麻岩地质背景、适宜的海拔高度、降水量、温度以及呈弱酸性的疏松土质等条件十分适合板栗生长。研究评价结果显示,种植区土壤中富含P、Mn、Fe等矿质营养元素,以及有效铜、有效锌和有效铁等,并且环境质量总体优良,土壤和灌溉水重金属元素含量基本符合无公害板栗种植的产地要求,为怀柔板栗产品附加值的提升及品牌宣传提供了依据。

The geological and soil geochemical characteristics of planting chestnut region in Huairou District are studied. It is found that there are some good conditions suitable for chestnut growing in the study region. The conditions include wide distribution of granite and gneiss, proper altitude, precipitation, temperature and loose soil of weak acidity. The results indicate that soil in planting region contains abundant the mineral nutrient elements P, Mn, Fe, and available Cu, available Zn, available Fe and so on. Also, environmental quality of soil is generally favorable, and heavy metal element content of soil and irrigation water basically corresponds to the requirement of producing area for non-pollution chestnut planting. Thus added value of chestnut product in Huairou District can be promoted, and brand value can be embodied better.