基于瞬态三维边界条件下土样密封端压力对数值随时间线性变化关系存在的基础上,对其与导气率之间定量关系进行分析,并利用该关系式计算烟台农科院苹果园土样导气率,采用稳态法验证了计算结果精确性.试验结果表明：瞬态三维边界条件下土样密封端压力对数值随时间的线性变化关系存在,且其与导气率测量结果之间具有极显著相关性,相关系数为0.93;对于苹果园土样导气率,定量关系式与稳态法两者计算数值之间整体相对误差小,70%以上相对误差变化幅度小于25%,说明所建立的经验公式具有一定的代表性.%Suppose the tank pressure vs.time data still existed under the three-dimensional transient boundary conditions,its quantitative relationship with air permeability is analyzed,and the soil air permeability of apple orchard in Yantai Academy of Agricultural Sciences is calculated,which is verified by steady-state method.The results showed that the tank pressure vs.time data still existed under the three-dimensional transient boundary conditions,moreover,there are very significant correlation between quantitative relation air permeability calculated result and the three-dimensional steady-state model＇s measured result,while the correlation coefficient was 0.93.According to Yantai orchard soil air permeability,the relative error range ability of the measured result between the empirical formula and three-dimensional steady-state model is small,and more than 70% of measurement result＇s relative error range ability is less than 25%.These indicated that the empirical formula has representative.
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