Eggplant seedlings are generally divided into 2 to 3 true leaves at 3 to 5 days before seedlings. In order to adapt to the lower temperature of the seedbeds, the survival rate after transplantation is increased, and the temperature is reduced by 3 to 5°C. Low temperature hardening seedlings. Cold bed nursery, especially seedbeds and greenhouse nursery, should gradually increase ventilation during the day to extend ventilation and lighting time. The seedlings were watered in the seedlings the afternoon before the seedlings, so that the soil moisture was suitable for digging seedlings. When digging seedlings, the roots should be as little as possible, and more soil should be taken. After the seedlings are dug up, they are sorted by size and transplanted separately. When taking seedlings, be careful not to damage stems and leaves. Roots should be stretched in the soil. Do not allow the roots to squash or curl. In order to prevent the wilting of seedlings caused by the sun, it is possible to cover the plastic film and the covering covering the sunlight. In order to increase the soil and air humidity in the seedbed to facilitate seedling growth, the seedlings should be sprayed immediately after transplanting, and the water can be poured once again the next day. Common methods for seedling separation include: nutrient splitting seedlings, having a good mulch protection, the survival rate after planting is almost 100%, basically no seedling-reducing period; seedlings are divided into seedlings, planted by hole or ditch, and ditch is planted dark. Water seedling method is to open a small ditch with a row spacing of 10-15 cm in the seedbed, with a ditch depth of 3-4 cm, and pour small water in the ditch. When the water is soaked or if there is little water left, press the seedlings by 10 cm. The plant spacing is discharged in the ditch, sticks to the ditch wall, stabilizes the seedlings by water, and finally covers the soil and seals the ditch; the nutrient soil blocks are divided into seedlings, and the water is poured on the seed bed, and then the road is divided according to the prescribed spacing. Make a nutrition soil block, insert a small hole in the center of each block, transplant the seedlings into the hole and cover the soil. Medical protective masks refer to self-priming filter dustproof medical protective equipment that can filter particles in the air, prevent the spread of certain infectious microorganisms in the respiratory tract, and block droplets, blood, body fluids, secretions, etc. Surgical Face Mask,Disposable Surgical Mask,Disposable Protective Mask,Surgical Face Mask Disposable Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com
Medical protective masks are masks made of one or more fabrics that have isolation effects on viral aerosols, virus-containing liquids, and so on. Under the respiratory airflow, it still has a barrier effect on viral aerosols, virus-containing liquids, etc., and when removed, the outer surface of the mask does not contact the human body, can filter particulates in the air, and block droplets, blood, body fluids, secretions, etc. . The use of medical masks includes adhesion testing, training, model selection, medical treatment and maintenance.
Composition and function: The Medical Protective Mask consists of a mask face and a tightening belt. The mask face is divided into three layers: inner, middle and outer. The inner layer is ordinary sanitary gauze or non-woven fabric. Propylene fiber melt-blown material layer, the outer layer is non-woven fabric or ultra-thin polypropylene melt-blown material layer. This high-efficiency medical Protective Mask is highly hydrophobic and breathable, and has a significant filtering effect on tiny virus-carrying aerosols or harmful fine dust, and the overall filtering effect is good.
The medical protective mask has a good fit with the wearer's face, can filter particles in the air, block pollutants such as droplets, blood, body fluids, secretions, etc., and can filter non-oily particles by more than 95% Personal protective equipment commonly used to deal with airborne diseases.
Product specifications: According to the national standard GB 19083-2003 "Technical Requirements for Medical Protective Masks", important performances of medical protective masks include filtration efficiency, adhesion, liquid barrier performance, comfort, hygiene, and biological safety tests.
Scope of application: Medical protective masks are better protective products. It is recommended to wear when there is serious environmental pollution or sudden medical infectious diseases (such as respiratory tract infectious diseases), to prevent the spread of viruses from patients or the environment to users.
Important indicators: including non-oily particle filtration efficiency and airflow resistance.
(1) Filtration efficiency: Under the condition of air flow (85 ± 2) L / min, the filtration efficiency of aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 95%.
(2) Tightness: The overall fit factor of the mask should not be less than 100.
How to use: How to wear a head mask
(1) Gently pinch the nose clip and place the mask on the face to ensure that it can cover the nose and mouth.
(2) The upper elastic band is fastened on the head to prevent air from entering.
(3) Tighten the lower elastic band around the neck.
(4) Be sure to fully open the mask to minimize the number of layers used during breathing.
How to wear earhook masks
(1) Pass the ear straps with both hands, place the nose clip on the upper part, and wear the mask on the nose and mouth
(2) The ear strap should be placed at the base of the ear and spread from head to toe, so that the folds of the mask are fully unfolded, which helps to cover the face to the greatest extent and minimize the number of layers required for breathing.
(3) Gently pinch the nose clip to prevent air from entering.