CAJ | 학술논문

通过向普通尿素中添加风化煤粉、腐植酸钾和脱盐液，利用熔融造粒工艺制备出普通尿素(U)、风化煤尿素(F U)、腐植酸尿素(H A U)、脱盐液尿素(T U)3个增值尿素试验产品，在25℃条件下，进行土壤培养试验，研究了增值尿素的氨挥发特征及其对土壤微生物量碳、脲酶活性的影响。结果表明，与普通尿素相比，各增值尿素氨挥发累积量降低29.52%～39.78%，延迟了氨挥发的峰值；各增值尿素处理，在培养的前7天内土壤的脲酶活性降低，延缓了尿素态氮在土壤的转化速率；延缓了土壤微生物量碳峰值出现时间；风化煤和腐植酸尿素处理在整个培养期内表现处理了较好的稳定性，减少氨挥发效果明显。
통과향보통뇨소중첨가풍화매분、부식산갑화탈염액，이용용융조립공예제비출보통뇨소(U)、풍화매뇨소(F U)、부식산뇨소(H A U)、탈염액뇨소(T U)3개증치뇨소시험산품，재25℃조건하，진행토양배양시험，연구료증치뇨소적안휘발특정급기대토양미생물량탄、뇨매활성적영향。결과표명，여보통뇨소상비，각증치뇨소안휘발루적량강저29.52%～39.78%，연지료안휘발적봉치；각증치뇨소처리，재배양적전7천내토양적뇨매활성강저，연완료뇨소태담재토양적전화속솔；연완료토양미생물량탄봉치출현시간；풍화매화부식산뇨소처리재정개배양기내표현처리료교호적은정성，감소안휘발효과명현。
By adding weathered coal, humic acid and potassium salt solution to common urea and using melt granu-lation process, urea (U), weathered coal urea(FU), humic acid urea (HAU) and desalination liquid urea (TU) were prepared. Soil incubation under 25℃was conducted to study the ammonia volatilization characteristic, soil microbial biomass carbon and soil urease activity of urea and three kinds of value-added urea. The results showed that compared with the common urea, the accumulation of ammonia volatilization of all value-added urea were decreased by 29.52%to 39.78%, the peak of ammonia volatilization were deferred, the activity of value-added urease in soil were decreased within the ifrst 7 days, the conversion rate of urea nitrogen in soil were reduced, the time of soil microbial biomass car-bon peak were delayed, weathered coal urea and humic acid urea showed better stability during the whole incubation period and had obvious effects on reducing ammonia volatilization .