How to apply the base fertilizer better

Base fertilizer is the most basic link in fertilization. It is essential for crop growth and development, especially in seedling stage and crop growth stage. The application of base fertilizer is generally considered from four aspects: the type and amount of base fertilizer, the type of fertilizer and the depth of application.

In terms of types, organic fertilizers (including farmyard manure, manure, green manure and cake fertilizer) are most suitable for base fertilizer application, and nitrogen, phosphorus, potassium and micro-fertilizer are also suitable as base fertilizers.

To determine the amount of base fertilizer application, especially the amount of fertilizer applied, soil fertility must be considered. In soils with organic matter below 1.2%, organic fertilizer of more than 3 cubic meters per mu should be applied. When the available nitrogen, phosphorus, potassium and trace elements in the soil are lower than the effective threshold of crop fertilization, the fertilizer should be selected first, especially in the early stage of the crop.

The specific dosage of various fertilizers as base fertilizer can be determined by reference to the comprehensive results of field fertilization test results and target yields in the local area. Generally, the total amount of nitrogen fertilizer on the high-fertility soil is about 30%, and the medium and low-fertility soil is 50%-70. The nitrogen fertilizer is used as the base fertilizer, and the phosphorus, potassium fertilizer and micro-fertilizer are all applied as much as possible.

From the perspective of fertilizer varieties, ammonium bicarbonate in nitrogen fertilizer, calcium, diammonium, calcium magnesium phosphate fertilizer, three materials in potassium fertilizer, potassium chloride, potassium sulfate, grass ash in potassium fertilizer, zinc fertilizer in manganese fertilizer, manganese fertilizer, etc. Suitable for the base fertilizer.

In terms of depth, the general base fertilizer should be applied to the entire plough layer, that is, 15-20 cm depth. For organic fertilizer, nitrogen fertilizer, potassium fertilizer, and micro-fertilizer, it can be mixed and evenly spread on the surface, and then ploughed into the soil to achieve uniform mixing of the fertilizer and the whole ploughed soil, so as to facilitate the absorption and utilization of nutrients by different root layers of the crop. Phosphate fertilizer is poor in mobility and is easy to be fixed after application to the soil and loses its effectiveness. Therefore, it should be applied in two layers at the bottom, that is, the lower layer is applied to a depth of 15 to 20 cm, and the upper layer is applied to a depth of about 5 cm. The upper layer mainly meets the demand for phosphorus in the seedling stage, and the lower layer supplies the phosphorus nutrition in the middle and late stages of crop growth.

Article source: Inner Mongolia Agricultural and Ranch Science and Technology Station
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High Speed Door Accessories

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

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