In order to ensure the safety of fish, when applying various pesticides to control pests in fish-farming rice fields, the field water should be deepened in advance. The water layer of the paddy field should be kept above 6 cm. If the water layer is less than 2 cm, the safety of fish will be brought. Threat. In the season of pests and diseases, the temperature is often high, and the general pesticides accelerate to volatilize as the temperature rises, which also increases the toxicity to fish. Appropriate time should also be mastered when applying. When spraying the liquid (powder), pay attention to spraying on the stems and leaves of the rice as much as possible to reduce the pesticide falling into the water, which is safer for the fish species. The powder should be used in the morning when the rice plant is exposed to dew. The water agent should be sprayed after drying on a sunny day. Do not apply before it rains. When spraying, the sprayer nozzle extends below the leaf and sprays from the bottom up. The method of mixing soil is not recommended. When using a highly toxic pesticide, you can take a spray and change the water. Or let the field water dry first, driving the fish into the fish ditch. In order to prevent the fish density in the ditch during the application period from being too large, and the water quality deteriorates and is deprived of oxygen, the new water should be flushed into the fish ditch every 3 to 5 days. After the potion disappears, fresh water is poured into the rice field to allow the fish to swim back into the field. It can also be used as a method of splitting the medicine, that is, a field is divided into two days to apply the medicine, the first day is half a field, and the second day is another half a field, which can also reduce the phytotoxicity to fish.
The High-mast Lamp is generally refers to the new lighting device which is composed of the steel taper light pole and the high power combination lamp frame of 15 meters or above.It consists of lamp holder, internal lamp, electric rod body and basic part.Lamp head modelling can according to user requirement, surroundings, lighting need specific and definite;The interior lamps are mainly composed of floodlights and projection lamps. The light source adopts NG400 high pressure sodium lamp, and the lighting radius is 60 meters.The bar body is usually a pyramid structure, which is made of steel plate, with a height of 15 to 40 meters, which consists of two to three sections.
Material characteristics
1. Beautiful appearance, large lighting area, good lighting effect, concentrated light, uniform illumination, small glare and easy to control and repair.
2. Applicable places: city square, station, wharf, highway, stadium, overpass, etc.
3. The lamp pole is a high quality steel plate by moulding into a multi - pyramid splicing steel rod, through hot galvanizing anti-corrosion treatment.
4. The lamp frame is made of high quality stainless steel.
5. Fasteners bolts and nuts are stainless steel.
6. Light source:400W-1000W sodium lamp.
Specifications:
Height: from 18m to 50 m
Suit for: highway, expressway, parkway, freeway, central motorway junction, truck and bus terminals, railyards, ship docks, airports, ferry terminals, prisons, industrial and commercial sites, international borders.
Shape: round, multi-pyramidal, column form, polygonal or conical
Material:
Q345B/A572,minimum yield strength>=345n/mm2
Q235B/A36,minimum yield strength>=235n/mm2
Tolerance of Dimension: ±2%
Lighting Source: 400 W- 5000 W high pressure sodium flood light, light extension :up to 30 000 m²
Light plate: Various figure of selection ,material with hot dip galvanization steel frame
Lifting System: Lifter fixed in the inner of the pole with lifting speed of 3~5 meter per minute
Equipped e; ant ferromagnetism brake and break -proof device, manual operation applied under power cut
Electric Appliance Control Device: Electric appliance box to be the hold of the pole ,lifting operation could be 5 meter away from the pole through wire .Time control and light control could be equipped to realize full-load lighting mode and part lighting mode
Surface treatment: Hot dip galvanized Following ASTM A 123, color polyester power or any other standard by client required.
Joint of Poles: Insert mode, inner flange mode, face to face joint mode .
Design of pole: Against earthquake of 8 grade
Wind Speed: 80 Km/Hour
Welding: We has past flaw testing. Internal and external double welding makes the welding in shape
Thickness: 6 mm to 20 mm
Production Process:
Raw material test→Cutting→Molding or bending →Welding (longitudinal ) →Dimension verify→Flangewelding→Hole drilling →Calibration →Deburr →Galvanization or powder coating, Painting→Recalibration→Thread→Packaging
Packages: Our poles as normal cover by Mat or straw bale at the top and bottom ,anyway also can following by client required
High-Mast Lamps Series,High Mast Lamps,High Mast Light,High Mast Light Pole
Jiangsu chengxu Electric Group Co., Ltd , https://www.chengxulightings.com