Seedbed preparation Sunlight greenhouse autumn and winter 茬 tomato seedling period is high temperature and rainy season, seedbed should be equipped with rain, ventilating, cooling conditions, must be under the conditions of film coverage, the seedlings can be adapted to the greenhouse conditions. It is best to choose a dry and well-ventilated area, set a 1.5~2 meter high arch shed, make a 1~1.5 meter wide nursery in the shed, apply 20 kg of rice farmer per square meter, turn 10 cm deep, 耙Flat noodles. In order to avoid high light and high temperature, it is best to set a shade net, or use other methods to shading and cooling.
Sowing seedlings, filling the water, after the water seeps, the plants are planted at a distance of 10 to 12 cm, and 2 to 3 seeds are planted per hole to cover 1 cm of nutrient soil. Keep the kneading surface moist before emergence.
After the seedling management, a strong seedling was left in each hole after the emergence of the seedlings, and the rest were cut off. Avoid drought during seedlings and keep dry and rheumatized. Spray the anti-caries agent every 7 days to prevent the spread of viral diseases. The autumn and winter tomato seedlings are bred for 4 to 5 leaves in about 30 days. Plant-aged seedlings with a plant height of 20 to 25 cm.
- Plano-convex lenses are useful for a wide range of applications. These lenses are manufactured from UV transmitting CaF2, MgF2(specifically designed for Excimer 193~248nm) ,Corning 7980 0F grade for 230nm to 1600nm, BK7A for visible and Near IR applications and Infra-red grade Calcium Fluoride for 2-5 micron range.Lenses are uncoated but Anti-reflection coatings are available. When used to focus a collimated beam, the light should be incident on the curved surface of the lens. These plano-convex lenses may be combined with other lenses to form complex imaging systems.
- Plano-concave lenses are useful for a wide range of applications. These lenses are manufactured from UV transmitting Fused Silica & BK7A and infra-red grade Calcium Fluoride and are excellent for use with lasers emitting in the 2 – 5 micron range .The lenses are supplied uncoated. Anti-reflection coatings are available. Please contact the Lambda`s sales team for more coating information.
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