清苑县蔬菜地土壤肥力状况调查分析

在河北省清苑县选择样点100个，测定了土壤耕层的有机质、全氮、速效磷、速效钾和微量元素等含量，并根据全国第2次土壤普查养分分级标准，对清苑县蔬菜耕地土壤肥力进行了分级。结果显示：目前清苑县土壤养分状况属中上等水平。大量元素中，磷和钾充足，大部分区域有机质和全氮含量偏低，碱解氮水平较低，速效磷和速效钾含量较高；中、微量元素中，锌、锰、铜和铁不太缺乏，而硫、镁、硼和钼含量较低。对今后蔬菜施肥提出了指导意见。

Investigation on the Soil Fertility of Vegetables Field in Qingyuan County

The contents of organic matter,total nitrogen,available phosphorus,available potassium and trace elements in plough layer were respectively determined by 100 sampling points selected in Qingyuan county,Hebei province.Accordance to the grading standard of nutrient in the second national soil survey,the grade for soil fertility of vegetable field in Qingyuan was made.The results showed that the soil nutrient condition was in the upper-middle level in Qingyuan.In the major elements,phosphorus and potassium wer...