Effect of grinding on the decomposition of soil organic matter—II. Oxygen uptake and nitrogen mineralization in virgin and cultivated cracking clay soils

摘要: Grinding caused large increases in both aerobic nitrogen mineralization and oxygen uptake virgin cultivated cracking clay soils. The organic matter decomposition the soils, which had been depleted by 50 per cent total matter, is discussed relation to rate of exposure field tillage. a increase soon after incubation started. With time, however, rates ground control samples were approximately equal. similarity between this pattern that obtained when artificial substrate added soil suggests grinding increased quantity available microflora.