Amino acid compound liquid fertilizer special for calcareous soil and preparation method thereof

Abstract

The invention relates to an amino acid composite liquid fertilizer special for calcareous soil. A liquid fertilizer mother solution is a mixed solution of concentrated biogas slurry, a welsh onion extract and an amino acid stock solution; the macroelement is at least one of urea, ammonium polyphosphate, urea phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate and potassium sulfate; the medium element comes from amino acid chelated calcium, amino acid chelated magnesium, and magnesium sulfate; the microelement is at least one of EDDHA-Fe, EDTA-Mn, EDTA-Cu, EDTA-Zn, zinc sulfate, sodium octoborate and boric acid; and also EDTA-Si and a rare earth liquid fertilizer are added. According to the invention, the concentrated biogas slurry and amino acid stock solution compose a mixed solution in a ratio of 1:4, then according to the nutritional requirement law of crops, a specific nutritional material formula is selected, the raw materials are added in a specific adding order and are mixed evenly so as to obtain the fertilizer product. The amino acid composite liquid fertilizer provided by the invention has the advantages of balanced nutrition, comprehensive functions, good water solubility and moderate acidity, and is especially suitable for large area popularization and application in northern calcareous soil.

Description

technical field [0001] The invention relates to the field of water-soluble fertilizers in agricultural production, in particular to an amino acid compound liquid fertilizer special for calcareous soil and a preparation method thereof. Background technique [0002] Calcareous soil is widely distributed in semi-humid, semi-arid and arid regions in the north and northwest of my country. Due to its high pH value and high carbonate concentration, it directly affects the absorption, transformation and utilization of large, medium and trace elements in the soil. . A large number of studies have shown that phosphorus in calcareous soil is easily fixed, so that the seasonal utilization rate of phosphorus fertilizer is only 10%-20%; high concentration of bicarbonate and high pH value are important factors that cause iron and zinc deficiency in plants. At the same time, it will inhibit the growth of the root system, reduce the number of root tips, and inhibit the absorption and utiliza...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a special amino acid compound liquid fertilizer for calcareous soil and its preparation method, aiming at the problem of insufficient adaptability of existing products on northern calcareous soil, and to overcome high pH Value and high concentration of carbonate inhibit the improvement of the effectiveness of nutrient elements and the obstacles to the robust growth of the root system. It is formulated by comprehensively considering the law of fertilizer requirements in different stages of crops.

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