How do farmers use agricultural plastic mulch film to improve crop yields?

Farmers use agricultural plastic mulch film to improve crop yields by creating a barrier that warms the soil, conserves moisture, and suppresses weeds. The film helps to retain heat from the sun, which can lead to earlier planting and a longer growing season. It also reduces water evaporation from the soil surface, conserving water and reducing the need for irrigation. Weed growth is minimized under the film, which means fewer resources are competed for by the crops, and less labor is required for weed control. Additionally, mulch films can improve soil structure and fertility by decomposing into organic matter over time, further enhancing crop growth and yield.