Carbon-rich starting phosphate fertilizer and preparation method thereof

Abstract

The invention discloses a carbon-rich starting phosphate fertilizer which comprises an inner core layer and an outer cladding layer from inside to outside, wherein the inner core layer is a composite phosphate fertilizer, the outer cladding layer is formed by mixing citric acid and a carbon-rich material, and the mass ratio of the composite phosphate fertilizer to the carbon-rich material to the citric acid is 100: (5-10): (1.4-2.6). The composite phosphate fertilizer comprises a phosphorus source, a zinc source and a boron source, and in the composite phosphate fertilizer, the mass ratio of phosphorus to zinc to boron is (90-95): (1-2): (0.2-0.5). The inner core layer is of a spherical structure with the diameter of 3-6 mm, and the outer cladding layer wraps the surface of the inner core layer. The core-shell coated carbon-rich starting phosphate fertilizer is prepared, the outer cladding layer is a material layer composed of citric acid and a carbon-rich material, the inner core layer is a phosphate fertilizer material required by plant nutrition, and the carbon-rich starting phosphate fertilizer can improve phosphorus supply in the phosphorus critical vegetative period of corn and can promote growth of corn roots.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a carbon-rich start-up phosphate fertilizer and a preparation method thereof. Background technique [0002] Starter fertilizer is a fertilizer used during crop emergence to meet the needs of seedlings for quick-acting nutrients and promote the root development of newborn seedlings. Seed fertilizers and mouth fertilizers are often used as starter fertilizers. It is characterized by local fertilization and the formation of high nutrient concentration in the local area, so that the crops can absorb enough nutrients in the early root system. [0003] Corn is China's largest food crop with a wide planting area. Its consumption in China includes feed, industry, and seed use. With the rapid development of animal husbandry in my country, the demand for corn continues to increase. The northeast and northwest are located at high latitudes, and low temperature is an important factor limiting the...

AI Technical Summary

Problems solved by technology

However, the root system of corn is weak at the seedling stage, and the ability to actively absorb phosphorus is poor. At the same time, the low temperature also reduces the dissolution and release rate of fertilizers, resulting in physiological phosphorus deficiency symptoms at the seedling stage, which in turn affects the later growth and yield of crops.

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