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应用培养试验，以２种红油土为供试土样，研究了温度、水分、土壤前处理、加入葡萄糖或脲酶对尿素水解速率的影响；以２种红油土、１种黄绵土、１种黑垆土和１种黄褐土为供试土样，研究了土壤性质对尿素水解速率的影响。结果表明，温度对尿素水解速率的影响明显而突出，在５～３５℃范围内，温度系数（Ｑ１０）平均为１．７３，半水解期随温度升高而递减；土壤含水量在２０％～３０％时，水解速率基本稳定，但降至１５％时减少，风干后显著下降。土壤中分别加入葡萄糖和脲酶后会使水解速率增加，但前者持续时间长，后者持续短。尿素水解速率与土壤有机质和起始尿素浓度间有显著或极显著正相关，相关系数分别达０．９３和０．９５。
The effects of temperature, moisture, soil pretreatment, addition of glucose or urease on the rate of urea hydrolysis were studied using two kinds of red soil as tested soil samples. Two kinds of red soil, one loessial soil, one Black soil and a kind of yellow cinnamon soil for the test soil samples to study the impact of soil properties on the rate of urea hydrolysis. The results showed that temperature had an obvious and prominent effect on the rate of urea hydrolysis. The average temperature coefficient (Q10) was 1.73 in the range of 5 ~ 35 ℃, and decreased with increasing temperature in the semi-hydrolytic period. The soil water content was between 20% At 30%, the hydrolysis rate was basically stable, but decreased to 15% and decreased significantly after drying. The addition of glucose and urease to the soil, respectively, led to an increase in the rate of hydrolysis, but the former lasted longer and the latter lasted for a short time. There was a significant or significant positive correlation between urea hydrolysis rate and soil organic matter and initial urea concentration, with correlation coefficients of 0.93 * and 0.95 * respectively.