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当前位置: 首页 > 文章 > 增值尿素对氨挥发和土壤脲酶活性的影响 山东农业科学 2010 (6) 66-68+77
Position: Home > Articles > Effects of Value-added Urea on Ammonia Volatilization and Soil Urease Activity Shandong Agricultural Sciences 2010 (6) 66-68+77

增值尿素对氨挥发和土壤脲酶活性的影响

作  者：
孙凯宁;袁亮;李絮花;林治安;赵秉强
单  位：
山东农业大学资源与环境学院;中国农业科学院农业资源与农业区划研究所
关键词：
增值尿素;土壤培养;氨挥发;脲酶活性
摘  要：
通过向普通尿素中添加不同类型有机物料增值剂,利用熔融造粒工艺研制出不同类型的增值尿素新产品,在25℃、土壤培养条件下与普通尿素比较,研究了不同类型增值尿素的氨挥发、土壤脲酶活性及二者之间的关系。结果表明,培养4周后,与普通尿素(U)相比,增值尿素品种F-5和H-5的氨挥发累积量分别减少了15.2%和13.3%,其中前者推迟了氨挥发高峰出现的时间,两者显著降低了氨挥发的峰值,且在整个培养期表现出了较好的稳定性。F-5和H-5品种在施肥后的前1周都显著降低了土壤脲酶活性,延缓了尿素态氮在土壤中的转化进程。与普通尿素相比,F类和H类增值尿素在减少氨挥发损失和抑制脲酶活性方面表现效果良好。
译  名：
Effects of Value-added Urea on Ammonia Volatilization and Soil Urease Activity
作  者：
SUN Kai-ning1,YUAN Liang2,LI Xu-hua1,LIN Zhi-an2,ZHAO Bing-qiang2(1.College of Resources and Environment,Shandong Agricultural University,Taian 271018,China;2.Institute of Agricultural Resources and Regional Planning,CAAS,Beijing 100081,China)
关键词：
Value-added urea;Soil incubation;Ammonia volatilization;Soil urease activity
摘  要：
Soil incubation under 25℃ was applied to study the ammonia volatilization and soil urease activity of normal urea and value-added urea which was manufactured by melted urea with different organic synergists.The results showed that the value-added urea F-5 and H-5 decreased the accumulation of ammonia volatilization by 15.2% and 13.3% compared to the normal urea.The peak of ammonia volatilization was deferred by the treatment F-5 and the peak value was brought down by the two treatments whose variation curves were relatively stable.The treatment F-5 and H-5 could inhibit the soil urease activity and prolong the release time of urea.Compared with normal urea,the effects of F and H value-added urea on the ammonia volatilization reduction and the soil urease activity inhibition were significant.

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