How to Scientifically Select Compound Fertilizer
Compound fertilizer has increased efficiency and efficiency compared to simple fertilizer, and it has been recognized by the majority of farmers. However, how to buy high-quality compound fertilizers to achieve low-efficiency and high-efficiency fertilization purposes, the majority of farmers are still difficult to grasp, combined with the variety of compound fertilizers on the market, novel names, packaging fancy, but also increased the difficulty of identification. To this end, the majority of farmers need to understand the common sense of using compound fertilizers.
Master the basic production process of compound fertilizer, and have a guiding role in the selection of compound fertilizer
According to the composition process, the compound fertilizer can be simply divided into potassium chloride type, potassium sulfate type, and potassium nitrate type. Potassium chloride type is the most widely used conventional compound fertilizer with relatively low cost. Potassium sulfate type is a compound fertilizer that avoids chlorine or chlorine sensitive crops. It has strong speciality and moderate cost. Potassium nitrate type is developed in recent years. High-grade compound fertilizer has no side effects on the soil. Such as rice can use potassium chloride compound fertilizer, tea, vegetables can use potassium sulfate compound fertilizer. Citrus, tobacco, etc. can use potassium nitrate compound fertilizer.
Mastering the criteria for the classification of high, medium and low concentrations of compound fertilizers is also a necessary common sense for the purchase of compound fertilizers.
In addition to the inherent quality of the compound fertilizer determined by the production process, another important indicator is the content of effective nutrients, effective nutrients can only be marked by nitrogen, phosphorus, potassium, and other nutrients are not used as nutrient markers (GB15063-94 standard). Some enterprises labeling S and other elements into total nutrients are not standardized and mislead farmers. Effective nutrients ≥ 40% are high-concentration compound fertilizers, effective nutrients 30% to 40% are medium concentrations, and effective nutrients 25% to 30% are low concentrations. The minimum nutrient standard for three-element compound fertilizer is ≥25%, 20%-25% can only produce two-element compound fertilizer, and less than 20% is not allowed by the state to produce products. Therefore, understanding this concept has positive significance for the purchase of compound fertilizers. As long as you look at the packaging, you can understand the taste of the compound fertilizer.
You can't just judge appearance, grain, color and solubility by choosing compound fertilizer, but also pay attention to brand effect
Brand is the product of market competition, and excellent products have recognized market effects. At present, certain domestic small enterprises have been spurned by the illegal demands of some dealers, posing as infrequent goods as brand-name products or imported products, seriously impairing the legitimate interests of farmers, and should be given vigilance. For example, sulfur-containing compound fertilizers are frequently sold in the market for the sale of potassium sulfate compound fertilizers and deceive farmers. In fact, in the real sense, most compound fertilizers contain sulfur.
In order to use compound fertilizers, it is also necessary to use alkaline compound fertilizers or organic compound fertilizers for soils with different acidic soils and low organic matter content due to use; for acidic soils, acidic compound fertilizers such as humic acids should be selected. Fertilizer; Phosphorus-containing or potassium-containing soil can use targeted dual compound fertilizer. Potassium nitrate compound fertilizer can be used during the dry season. In the rainy season, compound fertilizers containing ammonium nitrogen can be used. The base fertilizer can use coarse-grained compound fertilizers in order to increase the fertilizer efficiency. The top-dressing compound fertilizer can be used to increase fertilizer efficiency.
In short, the choice or purchase of compound fertilizer should aim at economy, safety, efficiency, and quality improvement, so as to achieve the best value.
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