Plastic film and vegetable stem base should have gaps
Covering the ground film has the effect of increasing the ground temperature, reducing the humidity in the greenhouse, and reducing the occurrence of diseases. However, the cover film is a fine work, if not handled properly, the film will not only not work, but also cause misfortune. Here to remind everyone: Do not let the mulch close to the base of the plant stem when covering the vegetables on the plastic film.
When covering the film, if the film contacts the sweet pepper stalk (stem base), due to the high temperature inside the mulch, the soil moisture condenses on the mulch after the water evaporates, then flows down along the base of the stem, day after day, A high-temperature and high-humidity environment is formed at the basement of the mulch and stem. In this environment, Phytophthora in soil easily germinates and infects sweet pepper stalks, resulting in “black stalksâ€. Therefore, when covering the film, do not allow the film to contact the base of the plant stem. This is an important measure to prevent the death of sweet pepper.
How can we make the film not directly contact the stem base of the plant? The reporter recommended that when the vegetable growers cover the mulch, they should not use cutting blades to cut the mulch. It is best to use a finger to remove the mulch, that is, when covering the mulch, fix it first. , The mouth should not be too large, generally 8-10 cm in diameter is appropriate, and finally cover the mulch, hand-pulled out of the hole around the best use of soil pressure, so that the film and plant stem base will have a certain gap.
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