石柱县南宾单元植烟土壤微量元素丰缺评价

Abundance Evaluation of Trace Elements in Tobacco Planting Soil of Nanbin in Shizhu County

[目的]探讨石柱县南宾单元植烟土壤有效微量元素的丰缺状况,为微肥施用提供科学依据。[方法]在石柱县南宾单元采集130个土壤样品,检测土壤微量元素含量,评价微量元素的丰缺状况。[结果]该单元植烟土壤水溶性氯含量为8.39 mg/kg,有效铜为1.44mg/kg,有效锌为2.16 mg/kg,有效铁为56.39 mg/kg,有效锰为51.86 mg/kg,有效钼为0.10 mg/kg,有效硼为0.18 mg/kg。有效锌处于中等水平,有效铜处于高水平,有效锰和有效铁处于很高水平,而水溶性氯、有效钼和有效硼较为缺乏。[结论]针对石柱县南宾单元土壤微量元素的丰缺状况,建议全面补施硼肥和含氯肥料,对临溪镇、龙沙镇、六塘乡和南宾镇适当补施钼肥。

[Objective] To study abundance evaluation of trace elements in tobacco planting soil of Nanbin in Shizhu County to provide refer-ences for the application of trace element fertilizers.[Method] 130 soil samples were collected from Nanbin in Shizhu County, and the content of trace elements in the soil samples were detected.[Result] The average content of water soluble chloride, available copper, available zinc, available iron, available manganese, available molybdenum, and available boron in the tobacco planting soil was 8.39, 1.44, 2.16, 56.39, 51.86, 0.10, and 0.18 mg/kg respectively.The average content of available zinc was at a middle level, and the average content of available copper was at a high level, while the average content of available manganese and iron was at a very high level , but the soil lacked water solu-ble chloride, available molybdenum and available boron.[Conclusion]According to the content of trace elements in tobacco planting soil of Nanbin in Shizhu County, boron and chlorine fertilizer should be applied in the tobacco planting soil of Nanbin in Shizhu County , and molyb-denum fertilizer should be applied in Linxi Town, Longsha Town, Liutang Township and Nanbin Town.