Volatilization of ammonia from submerged tropical soils.

摘要: A laboratory study was made of the losses nitrogen through ammonia volatilization from four flooded, tropical soils. The soils used varied considerably in pH, organic matter content, and cation exchange capacity. Losses were measured unamended soils, ammonium sulphate urea-treated Two rates application (approximately 50 200 kg/ha N) two methods (simulated field broadcast fertilizer incorporation) used. detected for each including an acid soil pH 3.6. Increased both urea resulted increased volatilization. Incorporation into mud flooded significantly decreased due to It concluded that initial or ‘aerobic’ characteristic most closely related magnitude