长垣县耕地土壤养分现状及施肥决策

为明确长垣县农田土壤养分状况,2006~2011年结合国家测土配方施肥项目,对长垣县农田耕地土壤养分进行了普查,共取土样6 300个,进行了常规和微量化验,并进行了统计分析。结果表明：长垣县的土壤基本养分含量分别为有机质13.78 g/kg、全氮0.83 g/kg、有效磷15.41 mg/kg、速效钾99.61 mg/kg,pH值平均为8.47;微量元素有效锰、有效铁和有效铜的平均含量分别为14.17 mg/kg、10.01 mg/kg、1.42 mg/kg,均超过临界值,总体上处于不缺水平;有效锌平均含量为0.83 mg/kg,7.04%的土壤处于缺锌水平。长垣县耕地土壤养分总体上处于缺磷少氮,部分缺钾、缺锌状况。生产上要大力推广配方施肥,实行秸秆还田,培肥地力。

Status of Soil Nutrient and Fertilization Decision of Farmland in Changyuan Country

The soil nutrient of farmland in Changyuan Country was surveyed.The results showed that the average content of organic matter,total N,available P and available K was 13.78 g/kg,0.83 g/kg,15.41mg/kg and 99.61 mg/kg,respectively.The average pH value was 8.47.The average content of available Mn,Fe and Cu was 14.17mg/kg,10.01mg/kg and 1.42mg/kg,respectively,which was over the critical value.The average content of available Zn was 0.83mg/kg,and 7.04% of soil was lack of Zn.On the whole,soil was lack of P and N,parts of soil was lack of K and Zn.The formula fertilization should be extended,and the straw returning should be carried out to fertilize the soil.