Why should you cover the film after sowing?
Due to the development and progress of modern agricultural science and technology, plastic film has gradually replaced the traditional plastic film. The main reasons for mulching after sowing are as follows:
1.Maintain temperature and heat.
Mulching can maintain the ground temperature well, and the mulching can prevent direct sunlight from shining on the soil, raising the ground temperature. This not only increases the ground temperature, but also promotes the growth and development of plants. In addition, the use of mulch film to protect against cold in winter can effectively prevent frost.
According to the test, after mulching, from sowing to germination, the soil temperature rises by 3-5 degrees, which can achieve a full seedling, full seedling, and strong seedling. Prevents budding due to factors such as soil conditions and external air temperature. In this process, the soil temperature of 10 cm was increased by 108 degrees compared with that of the control area, which could bud early, accelerate growth, and prolong the effective setting time, which provided a good environment for high yield and high quality of cotton.
2.Prevent soil erosion.
Mulching can reduce the evaporation loss of water on the surface, maintain soil moisture, and effectively increase soil moisture content. Especially in dry climates, mulching can enhance the drought tolerance of crops.
3.Control of weeds.
Mulching can effectively prevent the growth of weeds and reduce the harm to crops. In addition, mulch film can also prevent the spread of pests and reduce the occurrence of diseases.
4.Facilitation of microorganisms in the soil.
Plastic film can accelerate the activity and proliferation of microorganisms in the soil, accelerate the degradation rate of organic matter, and then realize the effective release and efficient utilization of nutrients. To a certain extent, by adding different kinds of microorganisms, the structure and soil fertility of the soil can be effectively improved and improved.
In short, the role of post-sowing plastic film is multifaceted, which can not only promote the growth and development of crops, but also promote the increase of crop yield, and can also improve soil ecology and soil fertility. The results show that the scientific application of film mulching cultivation is the key to achieve high yield, high efficiency and sustainable development.