A method for controlling flower pests in household daily necessities. The listed methods are effective against pests, have no pollution to the environment, and have no effect on the normal growth of the plants.
All of the following methods are targeted, and the methods vary according to different plants. For example, a strong positive plant requires the sun to be more intense, and the shaded plants cannot be operated in the sun. It must be in a cool shade. Local operation, otherwise the sun will strongly burn the plants. In the cool place, the plants will not be harmed, but the effect will be more effective. All methods are not ideal if they are exposed to rain, and the principle of spraying requires operation on a sunny evening. If it is raining, the number of days in the interval is shortened, and the number of sprays is correspondingly increased. For example, in the evening of the 7th spray, the next morning it rains, then the evening of the 8th should be sprayed again in the evening, if the 9th no longer rains, usually sprayed again 3 to 5 days, and so on. In addition, the environmental factors in each place are different and the effects will be different. The following methods are for reference only.
1, the control of mites: washing powder can kill mites, white mites and so on. When using, it is diluted with washing powder 5g of warm water 80g, and evenly stirred, spray the insects on the affected plant parts, every 3 to 5 days, three times in a row. Take 50g of fresh pepper, add 50~100g of water, boil for half an hour after cooking in a pot, and take the filter to spray the insects in the affected part of the plant, every 6 to 7 days, three times in a row. Mix the washing powder, urea and water in a ratio of 1:100:100, stir evenly, and spray on the insect body at the affected part of the plant, every 7 to 8 days, for 3 times. Use 1 kg of green onion and add 0.5 kg of water, smash the juice, and mix the juice with water 6 kg. Stir the two evenly, then spray the affected plants for 3 to 5 days at a time, 3 times in a row.
2, the prevention and control of scale insects: the use of onion or garlic extract can prevent scale insects. When using, take 2 garlic smashed, add 2kg of water to soak for half a day, then take the clarified liquid, spray the affected part, once every 3 to 4 days, kill all the pests for 3 consecutive days. Moreover, it can also have a bactericidal effect, inhibiting the spread of pathogens. Repeatedly rubbing the damaged plants with 75% alcohol can kill both adults and larvae. This method is only used when the insect index is low or the potted seedlings are small, and it is not suitable for large-area planting and when the insect index is large. Use washing powder, diesel oil, water to adjust the ratio of 0.3:5:3 into a milky stock solution, add 1 time of water, and mix it into 30% oil-containing dilution solution. After 7 days, most of the corpses are dried and the body color turns brown. And die. Use 1 part of white wine to make 2 parts of water, pour the surface of the potting soil, and pour it once every half month. Even pouring 4 times can kill most of the pests. Soak about 30 pieces of cigarette butts into 500g of water for a day and night. After filtering, add a little soapy liquid to spray. It is effective against the nymphs of scale insects.
3, the control of red spider: dilute the wind oil essence 600 ~ 800 times liquid, and then spray the affected plants, each interval 3 to 5 days, 3 times in a row, can kill the nymph of the red spider; take fresh cattle urine 1kg plus water 25kg of solution, then spray the affected plants, killing insects quickly and thoroughly; take 10g of washing powder, 13ml of caustic soda with a concentration of 20%, 6.5kg of water, mix into a mixed solution, then spray the affected plants, spray 2 times, the insect body The scented mosquito coils are placed in the plant pots, and the plants are tied tightly with the pots in a plastic bag. After the smoke is smoked for 1 hour, the insects are all dead.
Cylindrical lenses have at least one surface that is formed like a portion of a cylinder.Cylindrical lenses are used to correct astigmatism in the eye and in rangefinders, to produce astigmatism,stretching a point of light into a line.They are available in either plano-concave or plano-convex configurations. Plano-Concave Cylindrical lenses have a negative focal length and are used for image reduction or to spread light. Plano-Convex Cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.
Some styles of cylindrical lenses have antireflective coatings to increase the transmission of light through the lens. Fused silica cylinder lenses are ideal for demanding laser machining and medical applications.
Plano-convex cylinder lens,Plano-Concave Cylinder Lens,Double-Convex Cylinder Lens,bi-concave cylinder lens,Meniscus Cylinder Lens, Rod Cylinder Lens ,Achromatic cylinder lens are available.
Specification of our cylinderical lens as follow:
*Material: BK7,Ge,UV-grade fuse silica(JGS1,JGS2,JGS3)or other optical materials
*Dimension Tolerance: +0.0 -- -0.1mm
*Center Thickness: +/-0.1mm
*Focal Length Tolerance: +/-1%
*Surface Quality:20/10
*Surface Figure: lambda/2 at 633nm on plano side
*Clear Aperture>90%
*Chamfer: 0.25mm at 45 degree typical
*Coating Optional
Double Convex Lens,Bi-Concave Irregular Cylindrical Lens,Double-Concave Cylindrical Lens,Dcv Cylindrical Lens
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