Macro-element water-soluble fertilizer and preparation method thereof

Abstract

The invention provides a macro-element water-soluble fertilizer and a preparation method thereof. The water-soluble fertilizer comprises the following chemical components in mass percent: 40 to 60 percent of urea, 15 to 30 percent of a nitrate nitrogen fertilizer, 20 to 30 percent of potassium dihydrogen phosphate, 1 to 5 percent of potassium sulfate, 0.2 to 1 percent of calcium superphosphate, 0.5 to 2 percent of magnesium sulfate, 0.1 to 0.5 percent of EDTA chelated iron, 0.05 to 0.1 percent of EDTA chelated copper, 0.1 to 0.2 percent of EDTA chelated boron, 0.05 to 0.1 percent of EDTA chelated zinc and 0.01 to 0.1 percent of chelated manganese. The water-soluble fertilizer has low content of heavy metal, long fertilizer effect, good continuity and good soil absorption and utilization performances, does not injure plant roots and can prevent from caking.

Description

technical field [0001] The invention belongs to the field of agricultural waste production, and in particular relates to a water-soluble fertilizer with a large amount of elements and a preparation method thereof. Background technique [0002] Water Soluble Fertilizer (WSF for short) is a multi-component compound fertilizer that can be completely dissolved in water. The characteristic is that it can be quickly dissolved in water, more easily absorbed by crops, and the absorption rate is relatively high. More importantly, it can be applied to facility agriculture such as drip irrigation to realize the integration of water and fertilizer, and achieve the effects of saving water, fertilizer, labor and increasing production. [0003] However, at present, the water-soluble fertilizer products with a large number of elements in the domestic market are mainly in the form of solid powder and liquid. Most solid powder water-soluble fertilizers have low active ingredient content, lo...

AI Technical Summary

Problems solved by technology

Most solid powder water-soluble fertilizers have low active ingredient content, low plant utilization rate, and easy to pollute the environment. Some products add anti-caking agents, lubricants, etc., which are slow to dissolve (disperse), easy to agglomerate, and easy to absorb moisture. Decomposition, a lot of insoluble matter, easy to block nozzles and drip irrigation pipelines and other problems; and liquid water-soluble fertilizer packaging, transportation, storage, metering, and use are very inconvenient, and cannot adapt to modern agriculture, gardening, lawn and urban greening for high-quality water-soluble fertilizers requirements

[0004] Moreover, in the existing water-soluble fertilizers with a large number of elements, the heavy metal content is high, such as mercury, arsenic, cadmium, lead, and chromium. Since heavy metals are difficult to be absorbed by plant roots, they will be enriched in greenhouses for a long time, seriously damaging the soil environment of the root system, causing soil There are so many diseases, which lead to poor root growth, root rot, stem base rot and other diseases in the shed area, which seriously affect the production of the greenhouse, and even damage the greenhouse

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