Soil Properties as influenced by incorporation of CropResidnes

作     者：A. SCAGNOZZI, R. LEVI-MINZI, A. SAVIOZZI and R. RIFFALDIInstttute of Agricultural Chemistry, University of Pisa, Via S. Michele degli Scalzi 2, 56124 Pisa (Italy) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：1994年第4卷第3期

页      面：209-215页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

主　　题：bags crop residues organic matter decomposition soil properties 

摘      要：Chemical transformation , nutrient release and changes in the energy content of decomposing rape,sunflower and soybean residues confined in buried fiberglass bags were assessed in a laboratory study duringa 340-day incubation period. The organic C decreased by about 70% while total N, after initial decay,remained almost constant for each type of residue. The NH￣+4-N was progressively oxidized and, consequently,the NO￣-3N increased. The C/N ratio narrowed with loss of C. Hemicellulose, cellulose and lignin decreasedwith different trends for each crop residue. The energy content, was reduced to about 25% in rape, 30% insunflower and 20% in soybean residues. Total P, K, Ca and Mg contents decreased for each type of *** results suggest that the three residues could improve the nutrient pool of the soil.