| Based on the observed data of soil moisture and microclimate in the farmland,the soil moisture was analyzed,and the evapotranspiration was also calculated with Law of A.P Constantin's promise.The results show that the evaporation in 0～30 cm soil layer of cold wheat field is lower than the that of the warm wheat field from turning green stage to maturing stage;The amount of water consumed by the soil a of the cold wheat field a day is 31.6%～33.3% higher than that of the warm wheat field in the jointing stage,forming a vesicle for period,and the evapotranspiration in the farmland of cold wheat on the high side is higher than that of the warm wheat.These show that the field of cold type wheat has higher transpiration and lower evaporation of and higher soil moisture utilization efficiency. |