本文报道施用AT—87生物脲酶抑制剂对提高尿素在木麻黄(C.cunnighamiana Mig.林地利用率的研究结果。试验结果表明,施用适量的AT—87生物脲酶抑制剂能有效地抑制林地土壤脲酶活性,减少砂土林地施用尿素肥料的氮素损失,使尿素肥效提高三倍以上。加施AT—87的小区苗高生长量较施等量尿素的小区增加36.5%。 This paper reports the results of the study on the application of AT-87 bio-urease inhibitor to improve the utilization rate of urea in C.unnighamiana Mig. The results show that the application of AT-87 bio-urease inhibitor can effectively inhibit soil urease Activity and reduce the nitrogen loss of application of urea fertilizer in sandy soil, so that the urea fertilizer efficiency increased more than three times.Application of AT-87 community plot height growth compared with the same amount of urea in the plot increased by 36.5%.