1. Ammonium bicarbonate: weak alkaline, can be used as basal fertilizer and top dressing, can not be used as seed fertilizer, application should be deep or cover about 10 cm soil, can not be mixed with ammonium nitrate, superphosphate.

2, urea: neutral, suitable for all kinds of soil and all kinds of crops, suitable for base fertilizer, top dressing, can not be used as seed fertilizer.

3, superphosphate: weakly acidic, can be used as base fertilizer, seed fertilizer and top dressing, it is suitable for neutral or acidic soil, generally should be applied with organic fertilizer or ash, top dressing with its filtrate out of the root spray.

4, ammonium nitrate: weakly acidic, can be used as top dressing, can not be basal, seed fertilizer. Early spring crops should not be applied, and should not be mixed with organic fertilizers and hoeing; application to paddy fields due to denitrification and poor results, commonly used in dryland crops.

5, ammonium chloride: physiological acidic fertilizer, can be used as base fertilizer, topdressing, can not be used as seed fertilizer. Applicable to calcareous soil or partially acidic soil, but should not be applied to salt alkali soil and tobacco, grapes, potatoes and other chlorine crops.

6, nitrogen, phosphorus and potassium compound fertilizer: suitable for base fertilizer and early fertilizer.

7, calcium magnesium phosphate: weak alkaline, can be used as base fertilizer, generally not suitable for top dressing application, suitable for acidic soil.

8, potassium sulfate: physiological acidic fertilizer, as base fertilizer, top dressing can be, potassium sulfate applies to all types of crops, in particular, avoid chlorine and potassium crops, the application should be properly centralized application.

9, potassium dihydrogen phosphate: Currently used for soaking and dressing fertilizers outside the root, the effect is very good.

10, nitrogen and potassium compound fertilizer: should be used as potassium fertilizer crops fertilizer. If potassium nitrate is used, paddy fields should not be used.

11, potassium chloride: physiological acidic fertilizer, suitable as base fertilizer, applied in the acidic soil, preferably with the application of organic fertilizer or lime, salt and alkali should not be applied, avoid chlorine crops should not be applied.

12, nitrogen and phosphorus compound fertilizers: such as ammonium phosphate, suitable for all kinds of soil and all kinds of crops, should be used as base fertilizer, if the top dressing should be applied as top dressing, as a seed fertilizer, can not be in direct contact with the seeds.

Led Speed Limit Sign

In recent years, there have been more and more traffic accidents, and accidents caused by speeding account for a large proportion, The elderly, young people, and children, whether they are walking, commuting to get off work, or going to school, they all need a safe road traffic environment. The radar speed measurement display screen can curb the speeding of vehicles to a large extent, and give us a relatively safe traffic environment!
Install the radar speed display screen, passing vehicles will consciously adjust their speed to prevent overshooting.
Drive at a faster speed, thereby effectively reducing traffic accidents caused by speeding, and maintaining a stable and safe traffic environment has great benefits!
If people drive for a long time, they will feel tired, and the speed of the car will unknowingly produce
Change: Faster or slower, if the traffic flow is relatively large or driving on a high speed, it is prone to rear-end collisions and other traffic accidents...
Technology changes the world. The invention and creation of intelligent transportation will make our city more and more civilized; intelligent transportation will create a safer city!
Scope of application:
It is usually used in urban fast lanes, highways, suburban connecting lines; schools, hospitals, sharp turn intersections and other places where vehicles need to travel slowly; three-dimensional parking lots, entertainment venues, factory entrances, mining areas, etc.; accident-prone areas (such as tunnels, Bridges), construction sites, temporary construction sections; sections where the speed is restricted by government agencies, institutions, etc.; it can also be used for ball speed feedback in sports training such as football and tennis... The radar speed measurement screen has a significant eye-catching guidance function. Obviously reduce traffic accidents and achieve the effect of safety guidance.

Highway Speed Limit Signs,Speed Limit Signs,Traffic Led Display Screen,Led Speed Radar Sign

Shenzhen Wide Way Optoelectronics Co., Ltd. , https://www.wdmtrafficlight.com