Roelcke M, Li S X, Tian X H et al. In situ comparisons of ammonia volatilization from N fertilizers in Chinese loess soils[J]. Nutrient Cycling in Agroecosystems, 2002, 62: 73-88.
Pacholski A, Cai G X, Fan X H et al. Comparison of different methods for the measurement of ammonia volatilization after urea application in Henan Province, China[J]. Journal of Plant Nutrition and Soil Science, 2008, 171: 361-369.
[11]
Pacholski A, Cai G X, Nieder R et al. Calibration of a simple method for determining ammonia volatilization in the field-comparative measurements in Henan Province, China[J]. Nutrient Cycling in Agroecosystems, 2006, 74: 259-273.
[12]
Gericke D, Pacholski A, Kage H. Measurement of ammonia emissions in multi-plot field experiments[J]. Biosystems Engineering, 2011, 108: 164-173.
[13]
Liu X J, Ju X T, Zhang F S et al. Nitrogen dynamics and budgets in a winter wheat-maize cropping system in the North China Plain[J]. Field Crops Research, 2003, 83: 111-124.
[14]
Ju X T, Xing G X, Chen X P et al. Reducing environmental risk by improving N management in intensive Chinese agricultural systems[J]. Proceedings of the National Academy of Sciences of the United States of America, 2009, 106: 3041-3046.
Sanz-Cobena A, Misselbrook T, Camp V, Vallejo A. Effect of water addition and the urease inhibitor NBPT on the abatement of ammonia emission from surface applied urea[J]. Atmospheric Environment, 2011, 45: 1517-1524.
Cui S H, Shi Y A, Groffman P M et al. Centennial-scale analysis of the creation and fate of reactive nitrogen in China(1910-2010)[J]. Proceedings of the National Academy of Sciences of the United States of America, 2013,110: 2052-2057.
[23]
Galloway J N, Townsend A R, Erisman J W et al. Transformation of the nitrogen cycle: Recent trends, questions, and potential solutions[J]. Science, 2008, 320: 888-892.
[24]
Liu X J, Duan L, Mo J M et al. Nitrogen deposition and its ecological impact in China: An overview[J]. Environmental Pollution, 2011, 159: 2251-2264.