Abstract: Abstracts: Spring wheat photosynthetic light response curve was analyzed under three kinds of mulching treatments by Farquhar mathematical model, and the photosynthetic characteristic parameters of spring wheat under different mulch treatments were calculated. The results showed that there was a good imitative effect with RMSE ranging from 0.29 to 0.59 and the correlation coefficient range (R²) of 0.99. The photosynthetic characteristic of spring wheat showed that the plastic film mulching treatment had better improvement effect on the maximum net photosynthetic rate of spring wheat than other mulching treatments, and it had the highest light saturation point and a lower light compensation point, and it also reduced the dark respiration rate consumption of spring wheat. So the plastic film mulching treatment was the best planting way to photosynthetic production accumulation of spring wheat.