Black and white alternating plastic film has both transparent and black film functions, transparent film cultivation has a good warming effect on crops. Black agricultural plastic mulch inhibits weed growth and lowers ground temperature. Black and white alternating plastic film effectively reduces water evaporation and reduces the occurrence of diseases and pests. Black and white alternating plastic film can Improve crop water and fertilizer efficiency, promote crop root growth, and strengthen seedlings.

Covering black and white alternating plastic film during low temperatures has the effect of increasing ground temperature and reducing humidity. Covering black and white alternating plastic film can promote early emergence, rooting, and development of crops. Plastic mulch film agriculture can play a role in controlling soil temperature, preserving soil moisture, and weeding according to seasonal temperature. Black and white alternating plastic film can block sunlight and rainwater, reduce fertilizer loss, and adjust soil temperature to increase the absorption capacity of plant roots.

Due to the improvement of soil temperature and water conditions, it is beneficial for the activity of microorganisms, increasing the decomposition of soil organic matter and minerals, and increasing soil nutrients. Due to the movement of soil moisture from bottom to top, the moisture content of the topsoil is high, which relatively reduces the soil salt content and thus plays a role in inhibiting salt. The soil bulk density under black and white alternating plastic film is smaller than that without cover, and the oxygen content in the soil is higher than that in the open field after rainfall, which is conducive to the growth of plant roots. At the same time, due to less soil erosion, it can reduce soil compaction and improve soil physical and chemical properties.