The best time for apple tree to apply base fertilizer is to apply base fertilizer before germination in spring, and the fertilizer effect is slow. It has little effect on flowering fruit setting and new shoots in spring, but it will lead to excessive growth of tree body in the later stage. Flower bud differentiation and fruit development. It is recommended to apply less base fertilizer as much as possible, and apply more foliar fertilizer. At the same time, it can be combined with spring irrigation and topdressing fertilizer, with nitrogen and phosphorus fertilizer as the main, with appropriate amount of potassium fertilizer. In order to promote flowering and fruit setting, the tree should be applied with nitrogen fertilizer or foliar spray fertilizer from early March to early April. The flowering period can be sprayed with 2% ammonium sulfate, 0.3% potassium dihydrogen phosphate or 0.2% borax solution.
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Industrial Laser Distance Sensor
Industrial Laser Distance Sensor, we also call it secondary development laser distance module, which support TTL level and CMOS. The laser range sensor can be widely used in professional surveying, mapping, construction, robots, hunting arrows, industrial monitoring and automated measurement applications in electricity, transportation, etc. Our laser distance module supports data communication with RS232, USB with a simple adapter. The results of laser distance sensor can be evaluated with Arduino. We are always looking ahead, hoping we can make every measurement simple in life!
Parameters of M703A:
|
Accuracy |
±1 mm (0.04 inch) |
|
Measuring Unit |
mm |
|
Measuring Range (without Reflection) |
0.03-60m(150m can customize) |
|
Measuring Time |
0.125~3 seconds |
|
Laser Class |
Class II |
|
Laser Type |
620-690nm, <1mW |
|
Size |
45*25*12mm (±1 mm) |
|
Weight |
About 10g |
|
Voltage |
DC2.0~3.3V |
|
Electrical Level |
TTL/CMOS |
|
Frequency |
8Hz(20Hz can customize) |
|
Operating Temperature |
0-40 ℃ (32-104 ℉ ) |
|
Storage Temperature |
-25~60 ℃ (-13~140 ℉) |
Laser Distance RS232,Arduino Distance Module,Laser Module RS232
Chengdu JRT Meter Technology Co., Ltd , https://www.accuracysensor.com