Wholesale of corn mulching film in Nanning - insulation and moisture retention

Wholesale of corn mulching film in Nanning - insulation and moisture retention. Covering with plastic film hinders the vertical evaporation of soil moisture, resulting in a decrease in total evaporation. At the same time, gaseous water from the soil condenses into water droplets and flows back to the soil under the influence of gravity, increasing the surface moisture content of the soil. The effect of plastic film covering on soil moisture retention and improvement is obviously due to the fact that a portion of the water in plastic film covering can only circulate under the film. Therefore, water can exist in the soil for a longer period of time, improving the soil's utilization efficiency of water. Due to the coverage of plastic film, the soil temperature is high and the moisture content is high, creating favorable conditions for microbial activity and nutrient decomposition, promoting soil nutrient decomposition, and increasing nitrogen and phosphorus organic matter content. Due to the reduction of water evaporation caused by plastic film covering, the amount of salt and alkali accumulated on the surface with the increase of water content is reduced, resulting in a significant decrease in the salt and alkali content in the surface tillage layer. In some saline alkali land where it is difficult to maintain seedlings, the seedling retention rate can be improved.