The Analyze of Soil air Permeability Daily Change Characteristics

Abstract：In this paper, under no rain, no irrigation conditions that the soil moisture content at a low level, almost no change, in that can be neglected on the rate of soil air permeability, the relationship between soil air permeability and temperature was studied. Using PL - 300 soil air permeability measurement, measured the soil surface air permeability of corn and apple land and under ground 5 cm air permeability for daily observation. At the same time, measured the local air temperature, surface temperature, and under ground 5cm temperature. Through the field experiment on soil air permeability of the day tracking, analyzing the diurnal variation of air permeability, the results were follows： air permeability of corn land changed with surface temperature, air permeability of corn and apple land measured has the liner relationship with air temperature. In this paper, we establish the predicted relationship between soil air permeability of and temperatures provide a reference value for the local soil permeability measurements.