7Aon M A, Colaneri A C. Temporal and spatial evolution of enzyme activities and physio-chemical properties in an agri- cultural soil [J]. Applied Soil Ecology, 2001,18(3) .. 255.
8Rosm, Hermandez T, Carcia C. Soil microbial activitya{ter restoration of a semiarid soil by organic amendents [J]. Soil Biology Biochemistry, 2003, 35(3): 463- 469.
9Kosage J. The role of phenolic in plant response to in- fection[J]. Annual Review of Phytopathology, 1969,7 (4) : 195-222.
