Why does corn not love long? I will know when I finish reading it.
Recently, a lot of friends have commented on the leading crop science background. What is the problem with corn? Is there any way to promote corn growth? The following small collars have sorted out some of the causes and prevention methods that cause corn to grow short. You can look at it, analyze and analyze what causes it, and then prescribe the right medicine to avoid greater losses.
1, low ground temperature
The temperature is generally low this year, and the continuous low temperature has a certain degree of influence on the germination and growth of corn seeds.
2, high humidity
After sowing, after encountering rainy days, the soil moisture content is too large, and the corn seedlings are in a state of flooding for a long time, which may cause a short period of time.
3, herbicide phytotoxicity caused by not long
The phytotoxicity caused the corn leaves to yellow and the dwarf was not long. You can apply more water, then apply some better foliar fertilizer to ease the relief.
4, corn rough disease caused by not long
Remove the diseased plants to prevent late infection.
5, corn seedlings (root rot) disease caused by not long
The radix can be irrigated with carbendazim + agricultural streptomycin, and then the nutrient-regulated foliar fertilizer is sprayed.
6, corn smut is not long
The diseased plants were removed and burned intensively. It is generally used for seed dressing control, and it can also be used for prevention and control of fungicides such as diniconazole and tebuconazole.
7, root pests caused by not long
After sowing, the seeds are destroyed by underground pests, which is more serious in soils with insufficient moisture.
8, soil compaction
The long-term use of a single chemical fertilizer (diammonium, urea) easily causes the soil to form a knot, and the soil is not good enough to lead to poor growth.
The fact that corn does not love long is generally caused by many reasons, so if you want to find the reason, you can better prevent it.
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.hongfadoor.com