The best topdressing period for nine crops
2. Sorghum: In order to meet the nutrient requirements of sorghum from jointing to heading, the first fertilizer should be applied at the jointing stage, and 150-225 kg of ammonium nitrate or 120-180 kg of urea should be applied per hectare; Secondary fertilizer, 120 kg of ammonium nitrate or 75 kg of urea per hectare.
3. Rice: The absorption of nitrogen fertilizer by rice is gradually increased from the time of greening, and the peak of fertilizer absorption is reached at the peak of tillering. In order to promote early rice and early tillering, early application and heavy application of manure should be applied. Generally, 225 kg of ammonium sulfate can be applied per hectare 7-10 days after transplanting, and 100 kg of urea should be applied after heading.
4. Wheat: Wheat should be topdressed during the three-leaf period. Generally, 195-270 kg of ammonium nitrate or 135-180 kg of urea should be applied per hectare. In the later stage of wheat, due to the weakening ability of roots to absorb nutrients from the soil, a top dressing should be carried out at the heading and flowering stage. 2,250 g of potassium dihydrogen phosphate per hectare, 22.5 ml of triacontanol solution and 300 kg of water are mixed into a mixture. Spraying is also carried out; 3000 g of potassium dihydrogen phosphate can be used per hectare, 15 kg of urea is added, and 450 kg of water is sprayed.
5. Peanut: The critical period of peanut nutrition is in the early stage of fertility. About 15 days after the emergence of peanuts, the flower buds begin to differentiate and the nodules begin to form. When two pairs of side branches appear in the plant, nitrogen fertilizer should be applied once in time, and 150 kg of ammonium nitrate or 120 kg of urea should be applied per hectare.
6. Soybean: Soybean is a crop that requires more nitrogen fertilizer. It usually fills in nitrogen fertilizer at the initial flowering stage of soybeans. This can reduce the rate of flowering and falling, and can prolong the life of plants, increase grain weight and increase yield. Generally, it can be applied per hectare. 150-225 kg of ammonium nitrate or 120-180 kg of urea; in the pod-forming stage of soybean, a top-loading topdressing can be carried out, and the effect of increasing yield is more obvious.
7. Sunflower: In addition to the base fertilizer, the sunflower should be topdressed. Generally, topdressing is carried out in the bud stage, and 225 kg of ammonium nitrate or 180 kg of urea are applied per hectare. Conditional farmers can also carry out a root dressing during the flowering period.
8. Castor: timely application of ramie topdressing can promote early maturing and high yield of ramie. The first top dressing can be combined with the fixed seedlings. Each hectare is sold 225 kg of ammonium acid or 180 kg of urea. The second top dressing is carried out before the flowering of the nettle. The main fertilizer is phosphorus fertilizer, which can increase the yield.
9. Beet: After the seedling is fixed, the sugar beet will soon be transferred to the lush growth stage. In the early stage of beet growth, the second round of shovel can be combined with 150-225 kg of ammonium nitrate or 120-180 kg of urea per hectare.
About high speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com