What is BB fat? What are the characteristics of BB fertilizer?

What is BB fat? What are the characteristics of BB fertilizer? Please also know the netizens to help introduce last month in the process of visiting the countryside, found that there are many agricultural stores have many varieties of BB fertilizer on sale, but farmers on this colorful fertilizer is not very recognized, so the land network sorted out the principles and characteristics of BB fertilizer, the following detailed list for netizens' reference. What is BB fertilizer: BB fertilizer is also called bulk mixed fertilizer, which is a kind of compound fertilizer formed by mixing several kinds of granular nitrogen, phosphorus and potassium in a certain proportion. The formula of BB fertilizer is very flexible and suitable for different types of soil, and different formulations of BB fertilizer can be made according to the properties of different soils. BB fertilizer also has the advantages of comprehensive nutrients and high concentration, which not only saves time and effort, but also has obvious yield-increasing effect. The most commonly used mixed basic fertilizers for BB fertilizer are ammonium dihydrogen phosphate, diammonium hydrogen phosphate, heavy superphosphate, potassium chloride, ammonium nitrate, urea and ammonium sulfate. The characteristics of BB fertilizer: special point 1, BB fertilizer can flexibly adjust the fertilizer formula according to the law of crop nutrient demand and different soil nutrient supply characteristics, in order to meet the nutrient demand of crop growth and reduce the waste of nutrients. Special point 2, BB fertilizer through a reasonable combination of nutrient concentration can be up to more than 50%, while BB fertilizer can add trace elements, pesticides, herbicides, etc., can achieve the application of medicine and fertilizer at the same time, in order to achieve the effect of labor and time saving. Special point 3. BB fertilizer can be used as base fertilizer and topdressing fertilizer for crops by adjusting formula and raw materials, and it is no longer special fertilizer. Special point 4. BB fertilizer has no chemical reaction in the production process, which not only meets the requirements of energy saving and environmental protection, but also reduces the production cost of fertilizer. The disadvantages of BB fertilizer are as follows: 1. BB fertilizer has higher requirements for raw materials, and the particle size and density of raw materials need to be consistent. 2. BB fertilizer is easy to absorb moisture and caking, because the nitrogen in BB fertilizer is generally dominated by urea particles, and urea is easy to absorb water and lead to caking. BB fertilizer in bulk should be mixed and applied on the same day. 3. BB fertilizer is easy to separate, and BB fertilizer is easy to be delaminated because of different raw material density and particle size. Therefore, BB fertilizer should be remixed before application. 4. Because BB fertilizers are all dispersed particles, it is difficult to mix evenly when adding medium and trace elements, so it is necessary to add certain adhesives. What is seaweed fertilizer and what is calcium ammonium nitrate?