CAJ | 학술논문

采用土柱淋洗试验方法，对包膜尿素、尿素和硝酸铵在石碴土和粘壤质石灰性土壤中氮的行为进行了评价。结果表明，包膜尿素、尿素和硝酸铵的回收总氮量(包括淋洗溶液中各种形态氮，土壤吸附的肥料氮和残余的肥料氮)分别为施入总氮量的90.5%、74.2%、93.5%和91.5%、58.5%、91.1%。在1750mL淋洗溶液中NO3--N分别占淋洗溶液中总氮量的90%以上。在7次淋洗干湿交替之后，土壤吸附的肥料氮(NH4＋-N和NO3--N)均不超过施氮总量的2.1%；包膜尿素有62.7%和70.8%的氮以颗粒肥料存在于土壤中。3种氮肥中包膜尿素较尿素和硝酸铵在土壤中释放持续的时间显著延长，尿素的氨挥发损失较高，硝酸铵淋失较快。
채용토주림세시험방법，대포막뇨소、뇨소화초산안재석사토화점양질석회성토양중담적행위진행료평개。결과표명，포막뇨소、뇨소화초산안적회수총담량(포괄림세용액중각충형태담，토양흡부적비료담화잔여적비료담)분별위시입총담량적90.5%、74.2%、93.5%화91.5%、58.5%、91.1%。재1750mL림세용액중NO3--N분별점림세용액중총담량적90%이상。재7차림세간습교체지후，토양흡부적비료담(NH4＋-N화NO3--N)균불초과시담총량적2.1%；포막뇨소유62.7%화70.8%적담이과립비료존재우토양중。3충담비중포막뇨소교뇨소화초산안재토양중석방지속적시간현저연장，뇨소적안휘발손실교고，초산안림실교쾌。
A soil column leaching experiment was conducted in two textu reof calcareous soils to evaluate the fate of nitrogen froms of coated urea, ur ea and ammonium nitrate. The results showed that recovery of total N (included t otal N in the leacheate, fertilizer N adsorbed by soil and residual fertilizer N ) accounted for 90.5%, 74.2% and 93.5% of total N applied in gravel calcareou s s oil(the ratio of soil and gravel was 1:1.2) and 91.5%, 58.5% and 91.1% of to tal N applied in clay-loam calcareous soil with coated urea, urea and ammonium nitr a te, respectively; and cumulative NO3-N in 1750 mL of leacheate was more t h an 90% of total leacheate N. Soil N ( NH4＋-N and NO3--N) was not more than 2.1% of total N applied to the soils with different fertilizers after comp le tion of 7 times alternate leaching and drying. Nutrient released of coated urea was significantly longer than urea and ammonium nitrate, due to 62.7% and 70.8 % of coated urea nitrogen presented in the soils as granular fertilizers. Among t h ree kinds of chemical nitrogen fertilizer, the ammonia volatilization loss of u rea was possible higher and leaching loss of ammonium nitrate was faster in the soils.