It can prevent some medicine or blood from splashing on the face, thus protecting the eyes. This kind of glasses is generally used in conjunction with masks and surgical caps to fully protect the doctor's head.
4. The breathability must be good, generally there are vents
Protective goggles,disposable medical equipment,personal protection,daily protection Shanghai Rocatti Biotechnology Co.,Ltd , https://www.shljdmedical.com
[Functions of medical eye masks]
1. Prevent blood, potion and other liquids that cause damage to the skin from causing unpredictable damage to the eyes.
2. It can prevent the impact of objects on the eyes during close surgery.
3. The inner space of the eye mask is large enough for doctors who wear myopia glasses.
Greenhouse pumpkin pollution-free production technical regulations
1. For varieties and seed use, early-maturing high-quality varieties such as “Lizimanâ€, “Ringchengjinâ€, “Xiao Liâ€, “Gan Liâ€, and “Jin Li†should be selected. The amount of 667 m2 (1 mu) should be used. 60-80 grams. 2 Seedlings are planted in a field with high dryness, flatness, well-drained and sheltered from the sun. The greenhouse is covered with a small shed, electric wire heating, and nutritional seedlings. The seedling age is 35-45 days. It has 3-4 true leaves, a seedling height of about 10 cm, and a strong root system. 2.1 soaking seed germination before soaking seeds for 2-3 days to increase the germination rate. Place in hot water at 55-60°C, stir continuously, and keep for 15 minutes to kill pathogenic bacteria on the seed surface. When the water temperature drops to 30°C, continue soaking for 4-6 hours, remove and drain, put in 28-30°C environment to germinate, and rinse the seeds with warm water at 30°C for 2-3 times a day. The seeds can be sown with 3 mm of white. 2.2 Preparation and Disinfection of Nutrient Soil The nutrient soil was prepared using garden soil (or paddy field topsoil) 70%, soil miscellaneous fertilizer 20%, decomposed chicken and duck manure 10%, and ternary compound fertilizer 1% without planting melon vegetables within three years. And according to every cubic meter of nutrient soil mixed with 50% carbendazim 100 grams of composting disinfection. Loading specification is 1010 cm. 2.3 Seedbed preparation The geothermal heating line is laid at a rated power of 80-100 watts per square meter. The laying method is carried out according to the product specification. Every 667 square meters of Daejeon must be seedbed 3.5-4 square meters. 2.4 Sowing time and method The sowing time for early spring planting is arranged in the middle and late December. The germinated seeds were placed flat on the middle of the nutrition bowl, and 70% of the enemy was disintegrated with WP 500 times liquid, covered with 1.0-1.5 cm thick dry fine medicine soil, covered with plastic film, and buckled the small arch. 2.5 Seedbed Temperature Management Seed temperature is maintained at 28-30°C before seeds are sown until emergence. When the seedlings were unearthed, the power supply was cut off in time and the mulching film was gradually lowered to keep the temperature between 25-26°C during the day and 18-20°C during the night. After one week, the bed temperature continued to decrease, maintaining 23-25°C during the day and 16-18°C during the night. With the continuous growth of seedling leaves, nutrition should be sparsely sparse in order to prevent the occurrence of crowding. After 30 days, the amount of ventilation should be increased to practice seedlings to improve the cold resistance of seedlings to adapt to the new colonization environment. 2.6 Seedbed water management generally does not require watering from sowing to emergence. Try to do as little watering as possible, and only add moisture when the topsoil of the soil is dry and whitish. Every time after watering, it should be properly ventilated to reduce the growth of pathogens. 3. The plastic film is covered one month prior to the colonization of the soil preparation and fertilizer base. In combination with site preparation, basal fertilizer was applied, 1500 kg of organic fertilizer was applied per 667 m2, 4 kg of compound fertilizer was 20 kg, and potassium sulfate was 15 kg. The entire greenhouse was only planted in the middle of a planting plant, with a width of 80-100 cm. Fertilizer full-scale application. 4. Time and method of colonization According to the standard of Zhuang ,, timely colonization. Plant seedlings before pouring water once. Early spring colonization time from late January to early February, double row planting, spacing 0.5 meters, spacing between 0.5-0.6 meters, density of 330-350 plants per 667 square meters. After planting, root water was poured to cover the mulch. At the base of the seedlings, break the seedlings to help the seedlings. The breakage should be small, the seedlings should be light, the mulch should be flattened and kept close to the sorghum, the mulching of the mulch should be compacted with soil, and a small arch shed. 5. Field Management 5.1 The management of temperature and humidity management greenhouses is mainly based on prevention of cold, humidity control and lightening. Before the planting, the temperature of the soil in the greenhouse must be controlled above 10°C. After the planting, small arch sheds and greenhouses should be sealed and insulated to promote the survival of seedlings. The temperature of the greenhouse at night is not less than 10-12°C. In case of cold waves, small arches are covered with straw. The relative temperature of the air in the shed is maintained at 70%-80% before the seedlings are kept alive. After the seedlings were planted and lived, they were exposed during the day to increase the light transmittance, reduce the ambient air temperature, and promote plant growth. The greenhouse temperature is maintained at 25-30°C during the day. When the temperature is greater than 30°C, ventilation and ventilation are required to reduce the temperature and humidity. 5.2 Put two 4-meter-long bamboo pieces 0.5 meters from both sides of the shed in the greenhouse. The other two pieces of bamboo butt joints shall be fixed in the middle and the distance between the supports shall be 0.5-0.6 meters. 5.3 Plants were adjusted by single vine pruning, leaving the main vines and removing all lateral vines. When the main vine grows, it climbs to the side of the truss and leads the vines to the shelves. The vines are tied in time so that the plants grow along the bamboo. 5.4 Topdressing According to the growth status of plants, topdressing as appropriate, control nitrogen fertilizer in advance to prevent leggy. The pumpkins were topdressed once after the second harvest, applying 45% three-component compound fertilizer 15 kg per 667 square meters, potassium sulfate 5-7 kg. 5.5 In the early stage of pollination, a growth regulator was used to spread the placenta of the young cucumber to make the first female flower sit on the melon and control the length of the plant. Normal male flowers appear artificially pollinated at 6-10 hours daily. 6. Pest Control Techniques 6.1 There are powdery mildew diseases in the main diseases of pumpkin in greenhouses, and the main pests are aphids. 6.2 Diseases and Insect Pests Occurrence The disease is mild in spring, and the high-temperature and high-humidity powdery mildew occur severely in the later period. After the end of May, the aphid has serious damage. 6.3 Pesticide control of powdery mildew can be controlled by spraying with 1000-1500 times solution of 10% Shigeo water dispersible granules, or 40% Fuxing EC6000-8000 times solution, or 25% triadimefon WP1500 times solution. 6.4 Pesticide control of aphids can be controlled with 10%% imidacloprid WP1500. 7. The harvesting standard of the harvested tender melons is 20-25 days after the pollination of female flowers. The melons can be harvested from light green to dark green. The root melon should be harvested early, which is beneficial to the later melon enlargement and increase the yield.