A kind of oil shale semi-coke-based multifunctional plastic film and preparation method thereof

Abstract

The invention discloses an oil shale semi-coke-based multifunctional mulch film. The oil shale semi-coke-based multifunctional mulch film comprises: a first-layer film with a microporous structure mainly composed of oil shale semi-coke and mulch resin . Compared with the existing water permeable mulch film, the mulch film of the present invention has good temperature regulation, especially the thermal insulation performance at low temperature is significantly improved, and the impact of the great change in temperature difference between day and night on plants can be well slowed down. The characteristics can also obtain a good weed control effect.

Description

technical field [0001] The invention belongs to the field of agricultural mulch, and in particular relates to an oil shale semi-coke multifunctional mulch and a preparation method thereof. Background technique [0002] The use of plastic mulch film in agricultural production can increase ground temperature, reduce the ineffective evaporation of soil moisture, and greatly increase crop yields, but plastic mulch film also has some disadvantages: [0003] 1. The disadvantage of impermeability. While preventing the evaporation of soil moisture, ordinary polyethylene mulch film also prevents rainwater from infiltrating into the soil, reducing the utilization rate of rainwater; under low temperature and rainy weather, yellow leaves are easily produced after the film is removed; when the mulch is covered, the rainwater tends to accumulate, causing seedlings Dumped or even broken. [0004] 2. It is easy to keep the soil high temperature. In the high temperature season, the temper...

AI Technical Summary

Problems solved by technology

[0003] 1. Disadvantages of impermeability

Ordinary polyethylene mulch prevents soil moisture from evaporating, and at the same time prevents rainwater from penetrating into the soil, reducing the utilization rate of rainwater; in low temperature and rainy weather, yellow leaves are easily produced after the film is removed; topple over or even break

[0004] 2. It is easy to keep the soil at high temperature

[0005] 3. Poor weather resistance

The weather resistance of ordinary mulch is very poor, and the ultraviolet rays in arid areas are very strong, which will destroy the integrity of ordinary mulch, which not only reduces the reusability of the mulch, but also makes it more difficult to recycle, and it is easy to retain a large number of mulch fragments in the soil. , resulting in deterioration of soil cultivation conditions

[0006] 4. Poor air permeability

But there is no report on the application of oil shale semi-coke in plastic film