This method is simple and reliable and gives a good referenceto the standard weather stations to estimate the dew conditions of surounding crop canopy in largearca.

• 这种露的估算方法简便、直观，效果稳定，测报范围较大。 在梨冠层露情露时测报的二年应用中，露时误差在2h以内，露情轻重与实际相吻合。