湖南宁乡植烟土壤微量元素丰缺状况及相关性研究

Correlation Study on Situation of Micronutrients in Tobacco Planting Soil in Ningxiang Hunan Province

为探明湖南宁乡植烟土壤中有效态微量元素丰缺状况,在宁乡采集162个土壤样品进行分析.结果表明,该地区土壤中有效铜为3.55mg/kg,有效锌为2.84mg/kg,有效铁为198.65mg/kg,有效锰为30.40mg/kg,有效硼为0.57mg/kg,有效钼为0.122mg/kg;该地区有效锌和有效硼含量适宜,有效铜、有效铁、有效锰含量丰富,仅有效钼含量偏低且分布差异过大.相关性研究显示,有效铁、有效锌与pH呈负相关,有效铜、有效铁、有效锌、有效硼与有机质呈正相关,而有效锰与有机质呈负相关.

In order to make clear the situation of the micronutrients in the tobacco planting soil in Ningxiang Hunan province, 162 samples from Ningxiang areas were taken and analyzed. The result showed that in the soil of this region the average effective copper is 3.55 mg/kg, zinc 2.84 mg/kg, iron 198.65 mg/kg, Mn 30.40 mg/kg, boron 0.57 mg/kg and molybdenum 0.122 mg/kg among which the effective zinc and effective boron content are suitable;the effective copper, effective iron and effective manganese are rich in content, but the effective molybdenum content is low and the distribution difference is too large. The correlation study showed that available iron and zinc were negatively correlated with pH. Effective copper, iron, zinc and boron were positively correlated with organic matter, while effective manganese was negatively correlated with organic matter.