Q: what is soil testing and formulated fertilization?
A: Soil testing: testing soil nutrient content;
Formula: put forward scientific fertilization measures (ratio, dosage, period and method) according to crop fertilization law, soil fertility and fertilizer utilization rate
Q: can rice use nitrate nitrogen? No.
A: nitric oxide is easy to leach.
Q: what are physiological acid fertilizers?
A: Ammonium sulfate, ammonium chloride, etc. should be used in northern alkaline soil.
Q: Characteristics of granulating production line:
A: 1. The design of spiral section of mixing section is reasonable and unique, the mixing is uniform, and the feeding and discharging is fast
2. Computer automatic batching / mixing / packaging in one, using the cage feeding mode, small area, less labor, less investment.
3. The whole equipment is made of stainless steel, corrosion resistance, long service life.
4. The following are pictures of applicable granulation production line:

Q: what is chemical acid fertilizer?
A: Superphosphate is suitable for alkaline soil in North China.

Q: what is chemical alkaline fertilizer?
A: Phosphorus magnesium fertilizer, ash.
First of all, they can not be mixed with farmyard manure, ammonium nitrogen fertilizer and straw ash as mulching fertilizer.

Q: can urea be watered immediately?
A: No, urea is easily lost.
Do not water immediately after fertilization, it can be converted into ammonium bicarbonate in 2-3 days in summer, and the effect of re watering is better.

Q: can ammonium bicarbonate be applied to the soil surface?
A: No, it should be covered with soil. Due to the application of ammonium bicarbonate on the soil surface, most of the nutrients will volatilize into the air, and the utilization rate is very low. More details, go to https://organicfertilizerplants.com/

Q: how to improve the utilization rate of phosphate fertilizer?
-A: 1. Mixed organic fertilizer.
2. Concentrated application as base fertilizer.
3. Priority should be given to winter crops and legumes;
4. Combined application of nitrogen, phosphorus and potassium.
5. Sandy soil and dry land are preferred;
6. After effect of rational utilization of phosphate fertilizer.

Q: can urea be absorbed by crop roots?
A: after urea is converted into ammonium nitrogen, it can be absorbed by crops.

Q: why is the application of potassium sulfate compound fertilizer easy to cause soil hardening?
A: the main reason is the formation of CaSO4 (gypsum).

Organic fertilizer production and bio fertilizer production technology
The production line of organic fertilizer granulating machine and bio fertilizer is designed for the production of bio fertilizer granulating machine. The low price of organic fertilizer and bio organic fertilizer is due to their wide variety of raw materials.

How to use fertilizer manufacturing technology to produce bio fertilizer granulating machine in the complete bio fertilizer production line?
In the process of fertilizer production, different types of fertilizer equipment are equipped to complete the production process. The details are as follows:

Step 1: fermentation

a。 Add fermentation bacteria: 60% of livestock manure, 20% of food bacterial residue, 10% of materials with low water content such as straw (reduce water content to 40%, which is the most suitable water for fermentation), and 1% of bacterial fermenter.

The purpose of adding fungicide is to increase the temperature rising speed and control the fermentation temperature at 65 ℃ ~ 70 ℃. The peculiar smell and bactericidal effect in the fermentation process were eliminated, and the fermentation speed was accelerated, so that the fermentation time was shortened to about 15-20 days;

During fermentation, it should be noted that throwing should be carried out every 2-3 days. If the workload is too large, fermentation throwing machine can be used. The aim is to increase oxygen content, compost needs to be turned over continuously; at the same time, it can make the combination of fermentation bacteria and materials more uniform, increase maturity, and accelerate fermentation maturity.

Production of bio fertilizer

b。 Mashed potatoes after fermentation and ripening:
Because some stem rods are too large to fertilize, it is necessary to crush these materials by semi wet material crusher to prepare the next granulation (the smaller the crushed material, the easier it is to produce grains). The materials of crushing and mixing are powder, which is not conducive to mechanical fertilization.

Step 2: Granulation

If it’s an organic fertilizer manufacturer, it needs to be pelletized and sold. The price of granular organic fertilizer produced in the organic fertilizer production line is much higher than that of the ordinary fermented agricultural fertilizer. That’s why organic fertilizer is a few dollars less expensive and the profit is even more substantial.

a。 Mixing: in the production line of bio fertilizer, add proper amount of urea (and NPK) into the crushed products after fermentation, and stir evenly with horizontal mixer. The state of organic fertilizer has a significant regulatory effect because of the content of NPK.

Although the nutrients of fermented organic fertilizer are rich, NPK content still does not meet the national organic fertilizer content standard. It is necessary to add NPK to the granulation process, smash it into uniform particle size and turn them into powder, which is beneficial to granulation and fertilization.

Granulation: different granulation methods are selected according to water content and production capacity. When the output is large and the water content is high (low cost), the material is dried and cooled evenly by disc granulator to form stirring. Disc granulator is a kind of equipment used in organic fertilizer production line to produce organic fertilizer.

When the production is small and the water content is low (high cost), the mixing granulator no longer needs drying and cooling, and the granulation rate is relatively high, which can reach more than 90%, and the hardness is good and it is not easy to disperse.

c。 Screening: introduce granular materials into the sieve separator, screen and put 3mm materials directly into the packaging link. They can be sold as commodities: Materials less than 3mm that do not meet the standards shall continue until the diameter reaches the standard; return particles larger than 3mm to grinding stage and then make grains.

Compared with traditional composting, organic fertilizer has more development and mature process, and deodorant is added. Therefore, in the process of bio fertilizer production, there is no peculiar smell, and the mature organic fertilizer will not produce secondary maturity in sowing.

At the same time, because of the rich nutrients, the soil structure can be improved and soil hardening avoided; in the seedling combustion; meanwhile, due to the rich nutrient elements, the soil structure can be improved and bacteria can be added to the fermentation process. In the process of decomposition, the nutrients which are not easily decomposed in soil are transformed into the form which is beneficial to plant absorption and improve soil quality.