Bulk blended fertilizer, also known as BB fertilizer or dry mixed fertilizer, is a kind of compound fertilizer containing any two or three of the three nutrients: nitrogen, phosphorus and potassium. It is a compound fertilizer made by blending several granular fertilizers or compound fertilizers in certain proportions. During the blending process, there is no significant chemical reaction.
The production technology of blended fertilizer is simple. In the United States, blending operation and fertilizing operation are carried out as much as possible on the same day. Under such circumstances, the storage performance of the product does not need to be considered. However, in many countries, bulk blended fertilizer still needs to be packaged and stored for a period of time, so the storage performance of the product is very important.
All raw materials should be dry, have uniform particles and high strength to prevent the product from absorbing water, caking and particle separation during storage and transportation.
Advantage
Comprehensive in nutrients, high in concentration, with remarkable effects in increasing yield and saving costs, and highly targeted.
The nutrient ratio of BB-specific fertilizer is determined based on the characteristics of crop nutrient requirements and in consideration of the local soil nutrient supply conditions. It is both scientific and targeted.
The processing is simple and convenient, the production cost is low, and there is no pollution.
Bulk blended fertilizer is made by directly blending ready-made nitrogen, phosphorus, potassium and trace element fertilizers according to the scientific formulas based on the crop yield levels, fertilizer requirements and soil nutrient contents. No crushing or granulation is involved. It has good intuitiveness, simple method, low investment and low cost.
The production mode is flexible.
It can be carried out in any place such as cities and villages, factories, etc. The production volume can be large or small. There is no significant chemical reaction during the mixing process and no obvious pollution.
The formula is flexible.
It can be flexibly adjusted according to different conditions such as crop nutrition, soil fertility and yield level, making up for the shortcomings of general universal fertilizers which are prone to cause certain nutrient deficiency or excess due to fixed nutrient ratios.
It is convenient for promoting various new types of fertilizers.
Long-lasting ammonium carbonate, deep-lying urea, organic fertilizers, biological fertilizers, trace element fertilizers, and even pesticides and herbicides can be added for blending to avoid farmers' repetitive labor in production and make them more acceptable to farmers.
The fertilization method is flexible.
Since the raw materials of BB fertilizer are mostly selected as relatively uniform granular high-quality fertilizers, during application, it can be applied by machinery, by ploughing, by scattering, by strip application, by hole application, etc., with flexible methods.
