How to choose compound fertilizer correctly?

How to choose compound fertilizer correctly? Please introduce the method of increasing income and efficiency of compound fertilizer compared with simple chemical fertilizer, which has been recognized by the broad masses of farmers. However, how to choose and purchase high-quality compound fertilizer to achieve the purpose of low consumption and high efficiency is still difficult for farmers to grasp. In addition, the variety of compound fertilizer in the market is complex, the name is novel, and the packaging is fancy, which makes it more difficult to identify. To this end, the broad masses of farmers need to know the common sense of choosing compound fertilizer. Mastering the basic production process of compound fertilizer plays a guiding role in the selection of compound fertilizer. According to the composition process, compound fertilizer can be divided into potassium chloride type, potassium sulfate type and potassium nitrate type. Among them, potassium chloride type is the most widely used conventional compound fertilizer, and its cost is relatively low; potassium sulfate type is a compound fertilizer used in chlorine or chlorine sensitive crops with strong specificity and moderate cost; potassium nitrate type is a high-grade compound fertilizer developed in recent years. There are no side effects on the soil. Such as rice can choose potassium chloride compound fertilizer, tea, vegetables can choose potassium sulfate compound fertilizer. Citrus, tobacco and so on can choose potassium nitrate compound fertilizer. Mastering the division standard of high, medium and low concentration of compound fertilizer is also a very necessary common sense for the selection and purchase of compound fertilizer. In addition to the production process, another important sign of the internal quality of compound fertilizer is the content of effective nutrients, which can only be marked by nitrogen, phosphorus and potassium, and other nutrient elements are not used as nutrient marks (GB15063-94 standard). It is not standard for some enterprises to mark S and other elements into total nutrients, which misleads farmers. Effective nutrients ≥ 40% is high concentration compound fertilizer, effective nutrients 30% Mel 40% is medium concentration, effective nutrients 25% Mel 30% is low concentration. The minimum nutrient standard of three-element compound fertilizer is ≥ 25% Magi 20% Mel 25%, which can only produce two-element compound fertilizer, and less than 20% is not allowed to be produced by the state. Therefore, understanding this concept is of positive significance for the selection and purchase of compound fertilizer, as long as you look at the packaging, you can know the grade of compound fertilizer. The selection and purchase of compound fertilizer should not only be judged by appearance, granule, color and solubility, but also pay attention to brand effect. brand is the product of market competition, and excellent products have recognized market effect. At present, in order to meet the illegal requirements of some dealers, some domestic small enterprises have emerged one after another to pass off inferior goods as famous brand products or imported products, seriously harming the legitimate interests of farmers, so we should be vigilant. For example, it is often encountered in the market that sulfur compound fertilizer is sold as potassium sulfate compound fertilizer to deceive farmers and consumers. In fact, in a real sense, most compound fertilizers contain sulfur. The selection of compound fertilizer depends on time and place, heteroacid soil and soil with low content of organic matter, alkaline compound fertilizer or organic compound fertilizer should be selected, acidic compound fertilizer, such as humic acid ternary compound fertilizer should be selected in alkaline soil. Binary compound fertilizer with strong pertinence can be selected for soil containing phosphorus or potassium. Potassium nitrate compound fertilizer can be used in dry season. Ammonium nitrogen compound fertilizer can be selected in rainy season, coarse particle compound fertilizer can be selected for base fertilizer to prolong fertilizer efficiency, and small particle compound fertilizer can be selected for topdressing to accelerate fertilizer efficiency. In short, the selection or purchase of compound fertilizer should aim at economy, safety, high efficiency and quality improvement, so as to achieve the best value for money. Click to get more compound fertilizer application techniques