通过实验室土壤培养的方法,研究控失尿素在土壤中的养分释放情况,并分析控失尿素对土壤电导率(EC)值的影响。结果表明:普通尿素的释放率高于控失尿素,说明控失尿素比普通尿素有更长的肥效期;控失尿素的氮释放率随着控失剂含量的增加而降低;控失尿素能够提高土壤EC值。 Through the method of laboratory soil culture, the release of controlled-release urea in soil was studied and the effect of controlled-release urea on soil electrical conductivity (EC) was analyzed. The results showed that the release rate of common urea was higher than that of urea-controlled urea, indicating that urea-controlled urea had a longer effective period than that of ordinary urea. The release rate of nitrogen from controlled-release urea decreased with the increase of content of controlled-loss additive. Increase soil EC value.