Simulating Ammonia Volatilization from Applications of Different Urea Applied in Rice Field by WNMM

• 발행기관: 한국작물학회
• 저자명: Ki- Do Park Dong-Wook Lee Yong Li Deli Chen Chang-Young Park Young-Han Lee Chang-Hoon Lee Ui-Gum Kang Sung-Tae Park Young-Son Cho
• 간행물 정보: 『한국작물학회지』제53권 제1호, 8~14쪽, 전체 7쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2008.03.30

영문 초록

Ammonia (NH3) volati lization from a silty clay loam paddy soi l applied with non, straight urea, and coated urea, respectively, under transplanting in Milyang, Korea from 2002 and 2003 was simu lated by a Water and Nitrogen Management Model MM). Based on the data from the in-situ measurements, NH3 volati lization during the rice growth was 6.04% and 1.46% of the applied nitro-gen 이) from straight urea and coated urea, respective ly. The bulk aerodynamic approach in ~MM satisfactorily predicted the diffe rence in NH3 loss during the given rice growing seasons from the two urea fertilizers. R2 for the corre lation between the predicted and observed NH3 loss during the ca libration year (2002) was 0.53 less than 0.68 of the application year (2003). This difference could be due to the weather condition such as heavy rainfall and tem-perature during the calibration year.

목차

MATERIALS AND METHODS

RESULTS AND DISCUSSION

CONCLUSION

ACKNOWLEDGEMENT

REFERENCES

키워드

ammon ia volatilization paddy fie ld coated urea simulation