廊坊市农田土壤养分初步分析

分别于2013、2014年8~10月对河北省廊坊市农田土壤进行初步调查,共选择该市23个农田样点,结合土壤理化分析的常规方法,通过分析p H、有机质、全氮、速效钾和有效磷等指标进而评价该市的土壤养分状况。结果表明,廊坊市农田土壤为弱碱性(8.33),有机质平均含量为15.64 g/kg,全氮平均含量为0.99 g/kg,碳氮比均值为16.79,速效钾平均含量为288.47 mg/kg,有效磷平均含量为9.37 mg/kg。从种植的植物来看,各种蔬菜的农田土壤养分均低于玉米农田。从区域分布特征看,廊坊西部地区农田土壤养分的各项含量均略高于总体平均值,且差值较小,而北部与东部地区的各项含量偏低。

Preliminary Analysis on Soil Quality of Farms in Langfang City

Based on the preliminary survey to soil quality of farms in Langfang region from August to October in 2013 and 2014,23 farm samples were selected in Langfang region. pH value, organic matter, total nitrogen,available potassium and available phosphorus was analyzed by means of soil chemical analysis in order to evaluate soil quality of this region. The results indicated that the mean pH value was 8.33,and average content of organic matter was 15.64 g/kg. The average content of total nitrogen was 0.99 g/kg. The mean value of C/N ratio was 16.79. The average content of available potassium was 288.47 mg/kg and the average content of phosphorus was 9.37 mg/kg. Among them, the contents of organic matter, total nitrogen, available phosphorus and available potassium were a little higher in corn farm than in vegetable field. The contents of soil chemical properties in west region were higher than the mean value of total samples, and difference value was lower. But it was relatively lower in north and east region.