First, the urine wash mixture insecticide
250-500 grams of urea per mu, plus 100 grams of washing powder, 50 kilograms of water, mixed and sprayed, can control pests such as red spiders and aphids in fruit trees, crops and vegetable gardens, and control the effects of red spiders up to 90 About %, the effect of controlling mites can reach more than 95%. Not only pollution-free, but also topdressing.
Second, fertilizer mixed insecticide
The combination of fertilizer and pesticide is extremely powerful. For example, when using 1% urea solution for root external application, add 0.1% concentration of 50% dichlorvos EC or 40% stearin EC to spray, and control the red spider on cotton and flower to 92. %-96%, the control effect on aphids can reach more than 98%, and other pests can be treated.
Third, the grass and ash liquid insecticide
Use 10 kg of grass ash to water 50 kg, soak for 1 day and night, take the filtrate spray, can effectively control fruit trees, crop aphids, and can enhance the lodging resistance of crops and the wind resistance of young fruit trees.
Fourth, silicon calcium fertilizer insecticide
Silicon-calcium fertilizer is a new type of fertilizer. When the crop is fertilized, it can be applied or mixed with silicon-calcium fertilizer. After the crop is absorbed, the silicon will accumulate in the epidermal cells of the crop, forming a very hard skin layer, making it difficult for the pest to invade. To enhance the resistance of the crop. Applying 30-40 kg of siliceous calcium fertilizer per acre can greatly reduce the harm of armyworms to corn, sorghum, soybeans (soybeans) and kidney beans.
Five, nitrogen fertilizer insecticide
The three nitrogen fertilizers, urea, ammonium bicarbonate and ammonia, have certain volatility and have certain stimulating, corrosive and fumigating effects on pests, especially for small spider mites, spider mites and aphids, and weak resistance. The pests are especially effective. When the pest occurs, use 2% urea solution, 1% ammonium bicarbonate solution, or 0.5% ammonia solution to spray the roots, spray once every 7 days, even spray 2-3 times, Effective control of pests.
Source: Hebei Agricultural Network
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.hfgaragedoor.com