First, choose according to the application method. If it is used for flushing, drip irrigation or foliar spraying, it is recommended to use fertilizers such as potassium humate and ammonium humate, or use humic acid with the smallest molecular weight, the highest activity in humic acid, and can be directly absorbed by plants. Potassium fulvic or ammonium fulvic. If it is used for bottom fertilizer application, it is recommended to choose fertilizers such as ammonium humate or nitroammonium humate. When applying, pay attention to burying in the soil, because ammonium humate is a product of the combination of humic acid and ammonium bicarbonate, which is easy to volatilize. Shi or leaf spray.
Second, choose based on crop type and cost. For field crops, it is recommended to choose humic acid compound (mixed) fertilizer, which is not only easy to apply, but also cost-effective; for vegetables and fruit trees, you can choose humic acid organic fertilizer, humic acid organic-inorganic compound fertilizer, or trace element fertilizer in humic acid. The organic matter in these fertilizers can reach 20% to 45%, which can effectively improve the taste and color of crops. Although humic acid can be used during the whole growth period of the crop, for economic considerations, it can be applied 1 or 2 times at key periods such as after the plant is transplanted, before flowering, the swelling period, and the color change period. The swelling period and color change Combined with spraying effect will be better.
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Leading Laser Measure Module Factory in China
The World's First single transmitting single receiving design laser module, which has a big help to reduce producing cost and power consumption of the laser distance sensor.
This Laser distance sensor has high Accuracy up to ±1 mm, working as phase measure, which support RS232/RS422/RS485/Arduino to TTL communication.
This laser distance module is widely used in the Laser Distance Meter industry, also a very good choice for the Industrial applications. Most of measuring tools manufactures is purchasing from us in China.
Product Specifications:
|
Accuracy |
±1 mm (0.04 inch) |
|
Measuring Unit |
meter/inch/feet |
|
Measuring Range (without Reflection) |
0.03-150m |
|
Measuring Time |
0.1~3 seconds |
|
Laser Class |
Class II |
|
Laser Type |
635nm, <1mW |
|
Size |
45*25*12mm (±1 mm) |
|
Weight |
About 10g |
|
Voltage |
DC2.0~3.3V |
|
Electrical Level |
TTL/CMOS |
|
Frequency |
10Hz |
|
Operating Temperature |
0-40 ℃ (32-104 ℉ ) |
|
Storage Temperature |
-25~60 ℃ (-13~140 ℉) |
Range Sensor,Laser Distance Module,Distance Sensor,Laser Measure Sensor
Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com