Abstract:Elemental analyzers and infrared spectrometer was used to study the effects of the different organic materials on the structure and elemental composition of humus in black soil. Compared with CK, after five years, application of organic materials resulted in significant decrease of carbon (C) and hydrogen (H) of humic acid(HA), and the role of herb residue was the most obvious. Apart from animal excrement, other organic materials significantly increased nitrogen (N) of HA, and the content of oxygen (O) was remarkable different among different treats. Application of herb residues increased N of fulvic acid (FA). The content of C and O were remarkable different among different treats. Use of organic materials resulted in significant decrease of C and H, but enhanced content of O in humin linked to iron (HMi), and the role of herb residues was the most obvious, at the same time, herb residue decreased N of HMi. After application of animal excrement and woody residue content of C and N in humin linked to clay (HMc) was enhanced, and H in HMc was decreased. Compared with CK, application of organic materials resulted in significant decrease of H in HMc, and it was remarkable among different treats. Compared with control treatment (CK), application of organic materials decreased aliphatic compounds of humic acid(HA) and fulvic acid(FA), and the role of plant residues was the most obvious. In humin linked to clay (HMc), all the organic materials could increased aliphatic compounds, at the same time, decreased content of aryl-groups C=C. After five years, use of organic materials decreased content of hydroxyl and saccharide in humin linked to iron(HMi), but increased aliphatic compounds. Results showed there were different effects on the structure and elemental composition of humus due to different organic materials.
李建明, 吴景贵. 不同有机物料对黑土腐殖质元素组成及结构的影响[J]. 中国环境科学, 2011, 31(增刊): 78-83.
LI Jian-Ming, WU Jing-Gui. Effects of the different organic materials on the structure and elemental composition of humus in black soil. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(增刊): 78-83.