1. Effect of mulching film on soil: Due to mulch film insulation, promoting soil microbial activity, increasing decomposition of organic matter, and increasing production yield, large consumption of energy does not result in insufficient nutrient production of sorghum crops, resulting in reduced yields. Therefore, mulch cultivation is much organic. fertilizer. According to experiments, 4,000 kg of organic fertilizer is applied per mu for four consecutive years, and it still maintains a high rate of increase. In the same way, stable fertilizer input will be maintained every year, and production will not decline. Ways to restore soil fertility include planting green manure in wide rows and rotating crops, which have obvious effects. 2. Effect of residual film: Film aging, after harvesting, field residues are not removed in time, and can not be dissipated in long-term physical conditions. The root system cannot penetrate the residual film, impeding the absorption of water and nutrients, resulting in the formation of dead plants in the field and poor plant growth. They often hang around on the straw or are eaten by livestock and cause undesirable consequences, which should attract sufficient attention. 3, to prevent pollution, one is to remove the film in advance without affecting the yield. According to experiments, after the tasseling of corn, the rainfall was sufficient to uncover the film. Second, it is more convenient to remove the membrane when the soil is wet after the rain or watering, but be careful not to damage it and match the root system. Concrete Building Flour Milling Plant HEBEI PINGLE FLOUR MACHINERY GROUP CO., LTD , https://www.plrollermill.com