Regardless of whether it is a greenhouse or an arched shed, due to the long-term warm and humid environment in the shed, and the continuous cropping of the crops over the years, the soil in most sheds will grow green moss of varying sizes. Many vegetable farmers take this for granted and have not caused enough. Value. In fact, the soil in the greenhouse is covered with green moss, indicating that the salt content in the soil has exceeded the standard. Vegetable farmers should not belittle it.

Green moss is mainly caused by high soil salinity (such as excessive nitrogen and phosphorus) and humidity in greenhouses. It does not harm vegetable plants in itself, but vigorous green moss can "clog" soil stomata, resulting in greatly reduced soil permeability. So, how to avoid soil with green moss? It is recommended that vegetable farmers strengthen the following management:

Diligence

The main purpose of demarcation is to cut off the green moss on the surface of the soil, to break the layer of ground surface, to improve the physical and chemical properties of the soil, and to improve the permeability of the soil. Note that the paddles should not be too deep, and should be carried out step by step, and gradually deepened, so that the root system has a stage of adaptation and buffering, which is conducive to the healthy growth of vegetables.

Balanced fertilization

By measuring soil fertilization and lacking supplements, the amount of chemical fertilizers can be greatly reduced to avoid soil salinization. At the same time, the amount of functional fertilizers such as organic fertilizers or microbial inoculants can be increased, and the soil can be gradually improved to relieve soil salt Stains.

Deep soil

Use a deep turning machine to deepen the soil. It is best to use a deep turning machine that can turn the ground to a depth of about 45 cm to break the bottom of the plow and increase the depth of the tillage layer.

Use of drip irrigation equipment

Conditional vegetable farmers can install drip irrigation equipment and use the method of drip irrigation under the film to increase fertilizer utilization, reduce soil moisture, and reduce the appearance of green moss.

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Chitosan Series

Chitosan is a product of n-deacetylated chitosan. Chitin, chitosan and cellulose have similar chemical structure. Cellulose is hydroxyl group at C2 position, chitin and chitosan are replaced by an acetyl group and an amino group respectively at C2 position. Chitin and chitosan have many unique properties such as biodegradability, cell affinity and biological effect, especially chitosan containing free amino group, which is the only basic polysaccharide in natural polysaccharides.

The amino groups in the chitosan molecular structure are more reactive than the acetylamino groups in the chitin molecule, which makes the polysaccharide have excellent biological functions and can carry out chemical modification reaction. Therefore, chitosan is considered as a functional biomaterial with greater application potential than cellulose.

Chitosan is the product of natural polysaccharide chitin removing part of the acetyl group, with biodegradability, biocompatibility, non-toxicity, antibacterial, anti-cancer, lipid-lowering, immune enhancement and other physiological functions. Widely used in food additives, textile, agriculture, environmental protection, beauty care, cosmetics, antibacterial agent, medical fiber, medical dressings, artificial tissue materials, drug slow release materials, gene transduction carrier, biomedical fields, medical absorbable materials, tissue engineering carrier materials, medical and drug development, and many other fields and other daily-use chemical industry.

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