Bio:
Email: 1390497982@qq.com
蒙雯(1998—),女,硕士研究生,从事新型肥料研发;1390497982@qq.com
为了探明安徽省砀山县主要梨果产区的土壤养分分布特征,对9个梨园土壤中的大中量营养元素进行了测试。结果表明:土壤pH为7.5~8.5,呈碱性;有机质质量分数为4.50~18.56 g/kg,全氮质量分数为0.73~2.25 g/kg,有效磷质量分数为36.28~62.53 mg/kg,速效钾质量分数为313.60~444.21 mg/kg,交换性钙质量分数为236.72~676.18 mg/kg,交换性镁质量分数为27.87~55.47 mg/kg,有效硫质量分数为3.71~7.43 mg/kg;从总体来看,土壤中全氮、有效磷和速效钾的含量均处于丰富或较丰富水平,而有机质、中量元素含量均处于中等或缺乏水平。降低土壤碱性、适度减施大量元素肥料、增施中量元素肥料以及有机肥料,是安徽省砀山县梨园土壤养分管理的重点。
In order to ascertain the distribution characteristics of soil nutrients in the main pear fruit producing areas of Dangshan County, Anhui Province, the macroelements and medium nutrient elements in the soil of 9 pear orchards are tested. The results show that the soil pH is 7.5-8.5, which is alkaline; the mass fraction of organic matter is 4.50-18.56 g/kg, the mass fraction of total nitrogen is 0.73-2.25 g/kg, the mass fraction of available phosphorus is 36.28-62.53 mg/kg, the mass fraction of available potassium is 313.60-444.21 mg/kg, the mass fraction of exchangeable calcium is 236.72-676.18 mg/kg, the mass fraction of exchangeable magnesium is 27.87-55.47 mg/kg, and the mass fraction of effective sulfur is 3.71-7.43 mg/kg. From an overall point of view, the contents of total nitrogen, available phosphorus and available potassium in the soil are all at a rich or relatively rich level, while the organic matter and medium element contents are at a medium or lacking level. Reducing soil alkalinity, moderately reducing the application of macroelement fertilizers, increasing the application of medium element fertilizers and organic fertilizers are the key points of soil nutrient management in pear orchards in Dangshan County, Anhui Province.