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Correct interpretation of granularity standards
The national standard GB15063-2001 "Compound fertilizer" clearly stipulates that the particle size range of the compound fertilizer is: 1.0 ~ 4.75mm and 1.0 ~ 4.75mm of the particles to account for more than 90% of the total. The real intention of the standard is that after the compound fertilizer in this particle size range is applied to the soil, small particles first release nutrients, or small particles release nutrients first, and larger particles release nutrients afterwards. Or when the nutrients are needed at the later stage of crop growth, they are gradually released to meet the nutrient demand of the crop during the whole growth cycle, thereby increasing the utilization of fertilizer, reducing the input of farmers, and increasing the output-to-input ratio of agriculture. The improvement of fertilizer utilization can not only increase the output of crops, but also reduce environmental pollution, achieve energy conservation and emission reduction and sustainable development.
However, at present, the current state of the granularity of the compound fertilizers on the market? Under the propaganda of some manufacturers of compound fertilizers, when farmers purchase compound fertilizers, they not only use white colored compound fertilizers, but also require uniform and uniform particle size. At the same time, under the influence of dealers, when farmers purchase fertilizers, they do not even look at the amount of nutrients, but see if the pellets are even and smooth, and they think that the particles are uniform, smooth, and rounded. Other farmers think that compound fertilizers that quickly disintegrate (or dissolve) into the water are good fertilizers, or that they can be foamed when fired with a fire. In fact, this is misleading farmers. Farmers do not have the means or methods to test the authenticity of the compound fertilizers. In addition to the adverse effects caused by some counterfeit compound fertilizers, farmers believe that since the grain size is doing so well, the fertilizer is It will not be worse. This, in turn, has played a role in promoting the increase in the granularity of compound fertilizers on the market. As a result, manufacturers are desperately improving the uniformity, roundness, and smoothness of compound fertilizer granules, and dealers are desperately marketing compound fertilizers with evenness, roundness, and smoothness in the market.
The uniform grain-size compound fertilizer is applied to the soil, and the peak period of release of fertilizer nutrients is basically the same. Excessive nutrients are released at the same time. On the one hand, the crops cannot be absorbed and even the roots of the crops are damaged. The crops cannot be satisfied. The demand for nutrients throughout the entire production cycle, especially during the late growth period, affects the increase in crop yields. On the other hand, nutrients that cannot be absorbed by crops will flow into rivers, lakes, and seas, polluting the environment and reducing fertilizer utilization. Compared with the input-output ratio of agriculture, the resources of our country cannot be used effectively and fully, and sustainable development cannot be achieved. At the same time, the cost of production enterprises is also increased.
Excessive pursuit of uniform, round, smooth appearance of compound fertilizers on the market cannot be blamed on the production enterprises and distributors of compound fertilizers because the quality of scientific fertilization for farmers and scientific farming needs to be further improved. Some producers The distributors misled the farmers, but when some scientific research institutes promoted their own technologies and processes, they unilaterally emphasized that their technologies or processes could make the compound fertilizers even, round and smooth, and they also played a certain misleading role.
How to change the status
As a compound fertilizer production enterprise, how should we face this situation? First, we must first produce high-quality compound fertilizer products according to the national “complex fertilizer†standard, gradually expand market share, and increase the visibility and power in the industry. , And then guide the market, through the industry self-regulation and national standards, laws and regulations to regulate the market; Second, we must seriously carry out good agrochemical services, guide farmers to scientific fertilization and scientific farming. Through in-depth development of agrochemical services, enterprises have increased investment in agrochemical services, so that farmers gradually realize that scientific fertilization can bring their own real benefits, then the grain size of compound fertilizers will not become a problem; Third, the compound fertilizer production enterprises must pass on their business relationship with distributors to instill scientific awareness of their fertilization, gradually change their business philosophy, influence the behavior of dealers through their own behavior, and then influence farmers and improve their science. Fertilization awareness, change the concept of fertilization; Fourth, the compound fertilizer production enterprises to improve their own production process. The production enterprise must adopt a soil testing formula to produce specific fertilizers, slow (controlled) release fertilizers, or loss-control fertilizers that are suitable for the crop according to the growth cycle and fertilizer-demand characteristics of different crops.
The market's requirements for evenness, roundness and smoothness of compound fertilizers may continue for some time, even for a long period of time. This has brought enormous pressure to the compound fertilizer production enterprises, but this Pressure is also a driving force. It can not only improve the company's own production process, improve the company's competitiveness, but also promote social progress and development. Special fertilizers, slow-release fertilizers, or loss-control fertilizers are effective ways to solve this contradiction and are also the direction of development of compound fertilizers.
Correctly Understanding the Granularity of Compound Fertilizer
With the adjustment of agricultural industrial structure, the increase of economic crops, the construction of new countryside, and the need to protect the ecological environment, the utilization of compound fertilizers and other fertilizers has received increasing attention from all walks of life. The main reasons for the low fertilizer utilization are not only the fertilization method, the characteristics of the fertilizer itself, the climatic conditions, the crop growth cycle and its absorption capacity, and the ability of the soil to retain water and moisture, but also have great uniformity in the size and size of the compound fertilizer. Big relationship.