Abstract:The characteristics and influence factors of nitrogen (N) mineralization in vegetable soils and grain soils of Erhai Lake region of China were studied using a two-week anaerobic incubation method. The average rate of soil N mineralization during the two weeks was 65.54 mg/kg. The soil N mineralization trend under different cropping patterns was as follows: vegetable fields>grain fields>garlic fields. The quantity of mineralization, which included mostly NO3--N decreased with the depth of the soil samples. The mineralized N was significantly positively correlated with the total N and soil organic matter (partial correlation analysis)content and negatively correlated with pH, but there was no significant correlation between N mineralization and inorganic N or C/N ratio (P<0.05). The total N, soil organic matter and pH are the main factors which significantly influence the N mineralization in farmland soils of Erhai Lake Basin.
郑洁, 张继宗, 翟丽梅, 刘宏斌. 洱海流域农田土壤氮素的矿化及其影响因素[J]. 中国环境科学, 2010, 30(增刊): 35-40.
ZHENG Jie, ZHANG Ji-Zong, DI Li-Mei, LIU Hong-Bin. Nitrogen mineralization and its influence factors in the farmland soils of Erhai Lake Basin. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(增刊): 35-40.