Weak alkaline solid water soluble fertilizer for improving acid soil and preparation method thereof

Abstract

The invention relates to a weak alkaline solid water soluble fertilizer for improving acid soil and a preparation method thereof. The weak alkaline solid water soluble fertilizer is prepared from the following raw materials according to mass percent: 5 to 15% of mineral resource fulvic acid, 5 to 20% of biochemical fulvic acid, 2 to 6% of compound amino acid, 5 to 15% of sodium metasilicate, 40 to 60% of nitrogen containing alkaline fertilizer, 8 to 10% of monopotassium phosphate, 0.05 to 0.1% of zinc, 0.01 to 0.03% of copper, 0.05 to 0.1% of boron, 0.005 to 0.03% of molybdenum and 0.1 to 1.0% of fungicides. The invention further provides a preparation method of the solid water soluble fertilizer. The fertilizer integrally shows alkalinity or physiological alkalinity, iron and manganese elements which are toxic to crops in an acid soil environment are avoided during trace elements selection, various nutrients such as organic matter, inorganic salt, beneficial bacteria and the like are supplied, and additionally, alkaline factors are released, so that the fertilizer is suitable for facility vegetable soil with severe acidification.

Description

technical field [0001] The invention belongs to the technical field of functional water-soluble fertilizers, and relates to a weakly alkaline functional solid water-soluble fertilizer capable of improving acidic soil and a preparation method thereof. Background technique [0002] Acidic soil is a general term for low pH soil, including red soil, yellow soil, brick red soil, red soil and podzol. In acidic soil areas, the soil base saturation is low and the acidity is high. The precipitation in this area is abundant, which will easily lead to the leaching of soil base ions and nutrients, resulting in environmental pollution and further decline in soil water storage and fertilizer retention capacity. The main obstacles to acidic soils are low pH, high concentrations of free and exchangeable aluminum (aluminum toxicity), high concentrations of reduced manganese, and deficiencies in phosphorus, potassium, calcium, magnesium, and sometimes molybdenum. At present, due to industria...

AI Technical Summary

Problems solved by technology

But there are many deficiencies in this biological type liquid compound fertilizer, as selecting the physiological acidic fertilizer magnesium sulfate as fertilizer component, in the process of plant absorption, releases acid radical ion, weakens the effect of acidic soil improvement; and its moisture content is high, solid content Low, the effective nutrient content is low, the effect of improving soil acidification is limited, and the fertilizer is a water solution, and the packaging and transportation are inconvenient