Can black plastic film be used in high temperature season? The difference between black plastic film and white plastic film.

Black plastic film can be used in high temperature season. Black plas

Can black plastic film be used in high temperature season? The difference between black plastic film and white plastic film.

Black plastic film can be used in high temperature season. Black plastic film has low light transmittance, weak thermal radiation, almost no light transmittance and remarkable weeding effect, which solves the problem of planting grass under the film well. In addition, the black plastic film can insulate the heat, reduce the soil temperature and reduce the evaporation of water in high temperature season, which can not only resist drought and preserve water, but also prevent plants from being burned. However, compared with the white plastic film, the black plastic film is slow to heat up and difficult to degrade, which has a certain impact on the environment. The white plastic film has good light transmittance and can quickly increase the ground temperature.

1. Can black plastic film be used in high temperature season?

1, black plastic film can be used in high temperature season. The light transmittance of black plastic film is only 1%-3%, and the heat radiation is only 30%-40%, which can prevent the penetration of sunlight and control the germination and growth of weeds, thus solving the problem of planting grass under the film well. In addition, the black plastic film can insulate heat, reduce the soil temperature in high temperature season, reduce the evaporation of water, and have the functions of water retention and water fixation, so that water can circulate in the range covered by plastic film, which not only resists drought and water retention, but also prevents plants from being burned.

2. Black plastic film is a kind of black plastic film used for agricultural mulching, which is made of polyethylene as the main raw material, adding antioxidants, ultraviolet absorbers and black masterbatch. It has the advantages of strong fertilizer and water conservation, increasing yield, inhibiting weed growth and preventing adverse effects.

Second, the difference between black film and white film

1, the black plastic film has strong reflective effect and strong weed control ability, which can be used in areas with many weeds and is suitable for crops with low requirements on ground temperature. It is not as fast as white plastic film, and it is difficult to degrade, which has a certain impact on the environment. The white mulch film has good light transmittance, which can make infrared rays and ultraviolet rays in sunlight penetrate through the white mulch film, improve the ground temperature, and provide light, heat and water for seed germination. However, white plastic film also has disadvantages, that is, it is worse than black plastic film in inhibiting weed growth.

2. In the process of agricultural production, black plastic film and white plastic film have their own characteristics, so they should be selected according to their own needs. The low temperature in spring makes it difficult for crop seeds to germinate when the soil temperature is lower than 10℃. In order to sow in advance, white plastic film can be used at this time, which can generally make crop seeds sow 20-30 days in advance. In summer and high temperature and dry season, black plastic film can be generally used to cover, which has the function of soil and water conservation, can block sunlight, and control weed seed germination and weed growth.