Effects of different row spaces on the soil evaporation and water use in winter wheat field
种植行距对冬小麦田土壤蒸发与水分利用的影响

Soil evaporation is useless because it doesn't participate in the processes of physiology and production of crops.The soil evaporation in different row spaces of winter wheat was measured by the Micro-lysimeters(MLS).The results show that with the increase of row spaces,the soil evaporation is increased,narrow row space can reduce the soil evaporation due to the bigger plant canopy.The whole soil evaporations of winter wheat are 89.1mm,104.2mm and 121.9mm under the row spaces of 7.5cm,15.0cm and 30.0cm.If taking the soil evaporation of 15cm row space as CK,the soil(evaporation) with a row space of 7.5cm reduces 14.5%,and that with a row space of 30cm increases 17.0%.