Effect of long-term use of organic manure and chemical fertilizers on fluvo-aquic soils physical quality

The influence of organic manure and chemical fertilizers on soil physical properties was studied. Results showed that organic manure not only increased the total soil porosity, soil water retention porosity, moisture retention capacity, effective water capacity, water permeability and saturated transmitting rate, but also decreased the hardness of surface soil. Organic manure can improve soil physical characters and bring about good soil condition for the practice of water-saving agriculture.