High-phosphorus and high-calcium liquid compound fertilizer and its preparation method and application method

Abstract

The invention provides a high phosphorus high calcium liquid compound fertilizer, including the following raw materials by weight: 0.2-1.2 parts of disodium octoborate tetrahydrate, 0.05-2 parts of EDTA (ethylene diamine tetraacetic acid)-Mn, 0.05-1.8 parts of EDTA-Zn, 10-50 parts of calcium fertilizer, 0.5-6 parts of magnesium fertilizer, 20-75 parts of phosphoric acid, 1-9 parts of urea phosphate, 2-13 parts of ammonium polyphosphate, 3-15 parts of potassium fertilizer, 0.5-4 parts of a cosolvent, 0.5-4.5 parts of a stabilizer and 8-40 parts of water. The invention also provides a preparation method and a use the method of the high phosphorus high calcium liquid compound fertilizer. The high phosphorus high calcium liquid compound fertilizer enables phosphate radicals and calcium ions to stably coexist in the liquid phase to avoid production of calcium phosphate and other insoluble precipitates, effectively improves the utilization rate of phosphorus and calcium liquid fertilizers, is good in fluidity, high-enriched in nutrients, and suitable for automatic fertilizing operation of large area, can significantly improve the fertilizing efficiency, and has the advantages of being time saving, labor saving, fertilizer saving, fast in fertilizer efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of fertilizer production, and in particular relates to a large amount, medium and trace element fertilizer applied to crops, in particular to a high-phosphorus-high-calcium liquid compound fertilizer and its preparation method and application method. Background technique [0002] Phosphorus is one of the macronutrient elements necessary for crop growth and development. It is an indispensable element for the formation of nuclear protein and lecithin. Phosphorus can accelerate cell division, accelerate root and shoot growth, promote flower bud differentiation, early maturity, and improve fruit quality. For example, it plays an important role in the respiration, photosynthesis, sugar decomposition and transportation of crops. Phosphorus can promote seed germination, help flower bud differentiation, promote good flowering, and promote early maturation and fruiting; it can also promote root development, making ...

AI Technical Summary

Problems solved by technology

However, in the liquid phase of liquid fertilizers, phosphate ions easily react with metal ions such as zinc, calcium, and magnesium to form a large amount of precipitation, which greatly reduces the availability of phosphorus and metal ion nutrients, thereby reducing the nutrient utilization rate of fertilizers

At the same time, these insoluble sediments are easy to block the filters and drippers of the drip irrigation system, which will cause great losses to the agricultural drip irrigation system

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