| Parameters of the water stress module of WOFOST model were adjusted based on the observed data of crop growth and soil moisture and properties from Jinzhou agrometeorological experimental station. The applicability test proved that WOFOST model was suitable for simulating the spring corn growth and yield in Liaoning Province, and the influences of drought on spring maize can be sensitively simulated by WOFOST model. Influences of mild drought, moderate drought and severe drought scenarios of the whole growth period and different growth stages on yield of spring maize in Liaoning Province were simulated. According to the simulation results, the yield loss under different drought risk levels across Liaoning Province was estimated. The results showed that the same drought level in different growth stages has different effects on yield. Generally, drought in tasseling\|milk stage had the greatest impact, followed by jointing\|tasseling stage, while drought during seedling\|jointing stage and milk\|maturing stage had less impact on yield. Yield loss across the whole province under severe drought scenario in tasseling\|milk stage was 30%~70%. Under the same drought level, different regions were affected differently. Under all the three drought scenarios, either in the whole growth period or the different growth stages, the yield reduction rate caused by drought generally showed a trend of aggravating from the east to the west. Under the situation of severe drought in the whole growth period, the yield reduction rate in the east of Liaoning Province was 40%~75%, in the middle area was 60%~90%, and in the west area is 65%~95%. |