规模化养猪场周边农田土壤理化性质分析

Soil physicochemical properties of farmland surrounding scale pig farms

为管理规模化养猪场周边农田土壤提供依据,采集了南昌市7个行政村规模化养猪场周边农田土壤进行多项理化性质测定。分析结果显示:南昌市部分规模化养猪场周边农田土壤含水量变化范围为8.87%-22.98%,pH值5.39-6.00,土壤有机质31.97-108.96 g/kg,碱解氮18.75-43.61 mg/kg,速效磷11.34-50.69 mg/kg,氧化还原电位202.27-295.67 mV。表明南昌市部分规模化养猪场周边农田土壤总体呈酸性;土壤有机质和速效磷平均值相对较高,说明该区域农田由于养猪场的猪粪和废水中的有机质和磷源输入而导致土壤有机质和磷含量丰富。分析土壤理化性质之间相关性得出:土壤碱解氮、速效磷与土壤氧化还原电位呈极显著负相关性,土壤碱解氮和速效磷呈显著正相关性。

To provide the management basis of farmland soil in accordance with the soil physical and chemical properties, soil was collected from the surrounding farmland of seven scale pig farms in Nanchang city. The soil physicochemical properties were analyzed as follows： the soil water content ranged from 8.87%-22.98%; pH values ranged between 5.39-6.00; soil organic matter was 31.97-108.96 g/ kg, available nitrogen 18.75-43.61 mg/kg, available phosphorus 11.34-50.69 mg/kg; the oxidation-reduction potential ranged between 202.27-295.67 inV. The results showed that the farmland soil surrounding scale pig farms in Nanchang was generally acidic. The average value of soil organic matter and available phosphorus were relatively high which indicated the soil organic matter and phosphorus were rich due to the pig farms in the source input of organic matter and phosphorus in pig manure and wastewater. Soil available nitrogen, available phosphorus and soil oxidation-reduction potential were negatively correlated; soil available nitrogen and available phosphorus were positively correlated.