Agricultural antibiotics belong to the category of biological pesticides . The commonly used streptomycin, jinggangmycin, endothelin, qingfengmycin, griseofulvin, cycloheximide, quercetin, etc., are the main antibiotic varieties currently widely used.
Sectional Door Accessories: motor 220V-380V, control box, spring break device, cable break device , aluminum alloy rope pulley, enhanced shaft bracket, air bag system, duplex enhanced guide wheel bracket.
Detail introduction for above main accessories
1.Motor and controller:
The garage door operator is designed for residential overhead sectional and tilt doors.
The operator memorizes the limit positions and unique braking system that slows the unit down at the end of its travel.
Rolling code remote control with max. 20 pcs hand transmitters.
The operator is equipped with a manual release lever which allows manual operation of the door in case of power failure.
The controller has a security LOCK function which prevents operation of the door from transmitter.
2.spring break device:
Sectional doors are hinged and they bend in the tracks as the door opens and closes. Many of these doors are counterbalanced with extension springs, also designated "stretch springs," and they have seven characteristics. The length is the measurement of all the coils pressed together. This, along with the inside diameter of the coils and wire size - the thickness of the wire from which the springs are made - determine the stretch, the distance the spring is extended - normally half the door height, and pull, the force the spring pulls when stretched its normal length. The type of ends determine how the ends of the spring are mounted. The initial tension is the percentage of pull needed to separate the coils. This is determined by the pitch with which the springs are wound. On sectional garage door springs this is normally 15 percent. For example a 100 pound pull spring requires 15 pounds of weight to separate the coils; when a door is open the two springs will support 15 pounds of door weight without any stretch.
Most extension springs are made of oil tempered wire. These are normally coated or painted. Some springs are made of galvanized wire.
3.able break device:
cable break device ,door hardware
adjustable bottom bracket .
the raw material hot plate
zinc plated
safety device
adjustable bottom bracket
the raw material hot plate
zinc plating
spring safety device ,2" and 3" safety device
once the cable is broken ,this devoice can keep the hurt away from the door falling
4.aluminum alloy rope pulley
Equipment: CNC stamping/punching machine, CNC bending machine, CNC cutting
machine, 5~250 tons punching machines, welding machine, polish machines...
Processed material: stainless steel: copper, carbon steel
Surface treatment: Hot galvanized, polishing
Making process:Stamping, deep drawing,bending, punching, laser cutting,threading,
welding, tapping, riveting, grinding
5.air bag system
It is a safety device. When the door is down to hit something, it will up automatically.
Operation pressure:<3mbar
Battery:CR2032*2
Battery lifetime>1 year
Emission frequency: 315MHZ
Emission power:<10mW
Receiver power source:12V
6.duplex enhanced guide wheel bracket
Determining the right type of sectional door roller for your garage door tracks can be a little confusing, especially when you do not know what you need to look for in a garage door roller. To simplify things, there are two primary things you need to be aware of. First are the actual dimensions of the roller, and second is purpose that you will be using the door for. You can read below about measuring your roller and choosing the right quality of material for your door.
Other Door Accessories,Electronic Door Accessories,Automatic Door Accessories,High Speed Door Radar Detector Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.highspeedshutterdoor.com
The agricultural antibiotic has the advantages of high efficacy, strong selectivity, easy decomposition, low residual toxicity, safety to humans and animals, no pollution to the environment, wide source, simple method and easy promotion. Many countries now use antibiotics as an important means of combating diseases, insects and weeds. In recent years, China has made great progress in using antibiotics to control plant diseases and insect pests such as agriculture, forestry and flowers. If the insect is treated with neomycin, the concentration of 0.015% can kill 100% of the leaf curler within 3 days, and the mortality rate of the aphids on various forests is as high as 85% to 98%.
The use of agricultural antibiotics, according to different plant diseases, choose the appropriate method of medication. For plant diseases infested by soil, it can be used as soil disinfectant; for plant diseases infected by seeds and seedlings, it can be impregnated with antibiotics, such as soaking seeds, soaking roots, soaking seedlings, etc., or seedbed spraying; for some diseases of above-ground crops of agricultural and forestry crops, Plant spray can be selected at an appropriate time; it is used on fruit trees and is mainly used as an ointment to control bacterial ulcers. The concentration of the antibiotic applied is usually within 100 ppm, and rarely exceeds 200 ppm except for fruit trees and trees.
In order to improve the anti-bacterial effect of the antibiotic, a synergist and a metal ion are often added when the antibiotic is used. The addition of synergists promotes the spread and absorption of antibiotics. Commonly used synergists are glycerin and other polyhydroxy compounds. At present, 190 glycerin is added to agricultural antibiotic preparations which are generally commercially available. Polyhydroxy compounds have strong water absorption, which can prolong the effective absorption period of antibiotics, promote the hydration of the stratum corneum on the surface of plants, and enhance the water permeability of leaf surfaces. The addition of metal ions allows the antibiotic to form a complex, which significantly improves the efficacy. For example, the addition of 1% to 2% of copper sulfate to the compound endothelin can prolong the retention period of the agent in the plant and enhance the disease resistance of the plant. Several major agricultural antibiotics are now introduced as follows:
Jinggangmycin can prevent root blight of melons and can be rooted with 20 to 100 ppm of liquid. The pesticide has strong systemic effect, and the drug has a long-lasting effect of 20 to 35 days, no phytotoxicity and low toxicity.
Griseofulvin to control melon wilt, 5% to 10% ointment can be used to coat the stem disease, once a week, a total of 3 to 5 times; control fruit rot disease, can be sprayed before 250ppm liquid.
Gentamicin is commonly used to control powdery mildew in wheat, melons and flowers, and can be sprayed with 50 to 150 ppm of liquid.
Actinomycin is also called Nongkang 101, and cherry leaf spot can be sprayed with 0.5 to 2 ppm liquid. The drug has strong systemic absorption and is long-lived in plants, which is prone to phytotoxicity. The drug is toxic to humans and animals and has a stimulating effect on the skin and mucous membranes. When used, it should not be mixed with alkaline pesticides.
Streptomycin can be used to control bacterial diseases of crops with its 50 to 100ppm liquid spray; China Pesticide Network recommends that its 50ppm liquid spray can control bacterial soft rot; it can also be used to soak seeds for 50 to 100ppm for 30 to 60 minutes. Bacterial diseases.