Black mulch film: The light transmittance is only 10%, which can effectively inhibit the growth of weeds. Black mulch can inhibit soil warming and is suitable for summer carrots, cabbage, spinach, autumn cucumbers, etc. Black mulch also has drawbacks, which are difficult to degrade and have a certain impact on the environment.
White ground film: It has good light transmittance and can increase the ground temperature by 2-4 ℃ after covering, with a wide range of applications. It is mainly used for vegetables, melons, cotton, and many other crops. Due to the good light transmittance of white mulch, weeds can fully carry out photosynthesis, so weed production is faster.
2. The use of mulch
"Plastic film" is an important auxiliary technology for improving crop yield in agricultural production! It is used for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, and has the function of promoting plant growth. According to statistics, the temperature of soil covered with plastic film is 2-4 degrees higher than that of soil not covered, which can allow crops to germinate and grow in advance in northern areas. At the same time, plastic film mulching plays an irreplaceable role in maintaining soil moisture and inhibiting the growth of weeds