尿素肥料,必须经过土壤脲酶水解,才能为作物吸收利用,就是说,具有脲酶活性的土壤,施用尿素才有肥效,但是土壤脲酶活性过强,尿素水解过速,往往因局部氨浓度增高使作物中毒或挥发流失。为了克服土壤高脲酶活性造成的损失,近年国外有人颇重视土壤脲酶抑制剂的研究,常用的如二氯化汞、胰朊酶、氢醌及苯等,但多未测定其 Urea fertilizers must be hydrolyzed by soil urease to absorb and utilize crops. That is to say, soil with urease activity can be fertilized with urea, but soil urease activity is too high and urea hydrolysis is too rapid. Poisoned or lost circulation. In order to overcome the loss of soil urease activity, in recent years, some people abroad have paid much attention to the study of soil urease inhibitors, such as mercuric dichloride, trypsin, hydroquinone and benzene, but many have not been determined