摘 要：本文对淮安市不同区域的土壤肥力监测点土壤全氮、有效磷、速效钾及有机质含量进行测定，以便掌握全市土壤肥力长期定位监测点的全氮、有效磷、速效钾及有机质含量的时空变化。结果表明：金湖全氮平均值为0。83g/kg，偏低，有效磷含量为20。10mg/kg，较为丰富，速效钾含量为160。14mg/kg，适量，有机质含量平均值为32。38g/kg，丰富；盱眙全氮平均值为0。76g/kg，缺乏，有效磷含量为8。04mg/kg，缺乏，速效钾含量为95。75mg/kg，适宜；洪泽全氮平均值为0。75g/kg，缺乏，有效磷含量为37。83mg/kg，丰富，速效钾含量为143。91mg/kg,，适宜，有机质含量平均值为35。48g/kg，丰富；淮阴全氮平均值为0。72g/kg，缺乏，有效磷平均值为28。75mg/kg，丰富，速效钾含量为69。55mg/kg，低量，有机质含量平均值为38。74g/kg，丰富；淮安全氮平均值为0。90g/kg，缺乏，有效磷平均值为37。34mg/kg，丰富，土壤有机质含量平均值为39。78g/kg，丰富；涟水全氮平均值为0。68g/kg，极缺，有效磷平均值为9。77mg/kg，缺乏，速效钾含量为43。43mg/kg,缺乏，有机质含量平均值为39。85g/kg，丰富。各地可根据当地的测定结果，提出相应的施肥方案，以提高农作物产量。94072

毕业论文关 键 词：土壤肥力；全氮；有效磷；速效钾；有机质

Abstract：The contents of total N, available P, available K and organic matter in soil fertility monitoring sites in different areas of Huai'an were analyzed。 The temporal and spatial changes of total nitrogen, available phosphorus, available potassium and organic matter in the soil fertility long - term monitoring and monitoring sites were grasped。 The results showed that the average nitrogen content in  Jinhu was 0。83 g / kg。 Effective phosphorus content of 20。10mg / kg was rich。 Potassium was suitable for the standard content of 160。14mg / kg。 The average organic matter content of 32。38g / kg was also rich。 Xuyi area average nitrogen was 0。76g / kg that was lack。 Meantime Effective phosphorus content of 8。04mg / kg was poor。 Available potassium content of 95。75mg / kg was good。 The average nitrogen content in the Hongze area was 0。75 g / kg。 Effective phosphorus content of 37。83mg / kg was rich。 Available potassium content of 143。91mg / kg was suitable standards。 Organic matter content of the average of 35。48g / kg was rich standards。 Huaiyin regional total nitrogen average of 0。72g / kg was belonged to the lack of standards。 Effective phosphorus average of 28。75mg / kg were rich standards。 Available potassium content of 69。55mg / kg was low level。 Organic matter content of the average of 38。74g / kg was  rich level。 Huaian regional total nitrogen average of 0。90g / kg was a lack of standards。 Effective phosphorus average of 37。34mg / kg was rich standards。 Soil organic matter content of the average of 39。78g / kg was rich standards。 The average nitrogen content of Lianshui area was 0。68g / kg which belongs to the extremely low standard。 The average value of available phosphorus was 9。77mg / kg which was a lack of standard。 Available potassium content of 43。43mg / kg was short of standards。 Organic matter content of the average of 39。85g / kg was rich standards。 It was suggested that some improved fertilizing measures should be taken according to the content of nutrition to increase crop yields。 

Keywords: Soil fertility, Total nitrogen, Effective phosphorus, Available potassium, Organic matter, Huai'an

目 录

1  前言 6

2 材料与方法 7

2。1材料 7

2。2仪器与试剂 7

2。3主要测定方法