Introduction to fertilizer types

At present, there are many varieties of fertilizers on the market. In order to cause the desire of farmers to purchase, some enterprises have printed misleading language such as full nutrition, detonated nuclear power, and increased production and production, which are unclear. In fact, the words labeled with fertilizers similar to the above exaggeration are in violation of the relevant provisions of the Fertilizer Registration Management Measures. To this end, it is necessary to introduce the knowledge about the types of fertilizers, so as to prevent farmers from letting some manufacturers give them a flicker.

According to the nature of the ingredients, it can be generally divided into inorganic fertilizers, organic fertilizers and biological fertilizers. Inorganic fertilizers are also called chemical fertilizers, such as nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, compound fertilizer, etc.; organic fertilizer is also called farmyard manure, such as manure fertilizer, green manure, cake fertilizer, circle fertilizer and compost, etc.; bio-fertilizer is a fertilizer for improving plant nutrition conditions. Generally, nutrients cannot be directly supplied.

According to the demand of the crop for the elements, it can be divided into large, medium and trace element fertilizers, a large number of elemental fertilizers such as nitrogen fertilizer, phosphate fertilizer and potassium fertilizer; medium amount of fertilizers such as calcium fertilizer, magnesium fertilizer and sulfur fertilizer; Iron fertilizer, manganese fertilizer, boron fertilizer, zinc fertilizer, copper fertilizer and molybdenum fertilizer.

According to the fertilization method, it can be divided into base fertilizer, top dressing, seed fertilizer and foliar fertilizer.

The compound fertilizer refers to a fertilizer containing at least two or more of the three nutrient elements of nitrogen, phosphorus and potassium. At present, the widely used formula fertilizer is also in the category of compound fertilizer. The difference from the general compound fertilizer is that the formula fertilizer is determined according to the nutrient content of nitrogen, phosphorus and potassium contained in the soil, and the fertilizer requirement of different crops. “Recipe” for production, to achieve a variety of nutrient balance supply, what to add to the crop shortage, how much to supplement, to improve fertilizer utilization, reduce fertilizer use, improve crop yield, improve agricultural product quality, save labor, festival The purpose of increasing revenue. The biggest advantage is that the formula fertilizer is to fertilize the soil testing formula fertilization technology into the fertilizer. While applying the fertilizer, the farmers unwittingly “fall the soil testing formula fertilization technology into the ground”.

At present, there are also new fertilizers called controlled release fertilizers on the market, and some manufacturers have also turned them into smart fertilizers or fool fertilizers. Controlled-release fertilizer is a kind of regulation mechanism to delay the initial release of fertilizer nutrients, prolong the effective period of effective nutrient absorption and utilization of plants, so that nutrients can be slowly or controlled release according to the set release rate and release period, which can improve the utilization rate of fertilizers. Reduce the use and fertilization times, reduce production costs, reduce environmental pollution, and improve the quality of crop products. Tests have shown that slow and controlled release fertilizers generally increase the effective utilization of fertilizer nutrients by more than 20%.
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