对桓仁县耕层土壤养分进行分析,并与全国第二次土壤普查时的化验结果进行比较。结果表明:全县土壤pH值变化不大,有机质、全氮平均含量有所下降,有效磷含量大幅度提高,速效钾含量也有所提高,但仍处于稍缺水平。 The nutrients of topsoil in Huanren County were analyzed and compared with the results of the second national soil survey. The results showed that the pH value of the whole county did not change much, the average content of organic matter and total nitrogen decreased, the content of available phosphorus increased greatly, and the content of available potassium increased, but it was still at a deficit level.