Empiricalestimation is available for study of soil AWC.
对土壤awc进行经验估算，是一种有效方法。
2
However, error can be caused because of empiricalestimation and the simple consideration of the circumstance factors.
由于经验估算、考虑环境因素简单，由此带来较大的计算误差。
3
Secondly, for its empiricalestimation, the soil AWC of black soils in northeast China was studied by statistics, and its estimating models were established.