Multi-element fertilizer special for saline-alkali soil

Abstract

The invention discloses a multi-element fertilizer special for saline-alkali soil. The multi-element fertilizer is prepared from the following raw materials according to set mass percents, and every 1000kg of the compound fertilizer special for the saline-alkali soil contains the following raw materials according to a mass ratio: 120kg of citric acid residues, 130kg of furfural residues, 120kg of fly ash, 300kg of seaweed residues, 300kg of silicate minerals, 20kg of a fertilizer compound and 10kg of a complex strain, wherein the citric acid residues comprise the following main ingredients in percentage by mass: 70% of CaSO4 and 20% of water; and the furfural residues comprise the following main ingredients in percentage by mass: 50% of organic matters and humic acid, 8% of nitrogen, phosphorus and potassium, and more than 14% of other minerals. The multi-element fertilizer can be used for reducing the salt content of the saline-alkali soil, improving the structure of a soil body and the living environment of crops, improving physical and chemical properties of the saline-alkali soil, increasing soil nutrients and enhancing the salt and alkali resistance of the crops, and has a good mutual promoting effect.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special multi-component fertilizer for saline-alkali land. Background technique [0002] At present, saline-alkali land is a general term for saline soil, alkaline soil and various salinized and alkalized soils. Saline-alkali land contains a large amount of soluble salt or sodium ions with excessive saturation on the soil colloid, which will cause harm to plants and soil microorganisms, destroy the soil structure, cause soil compaction, poor permeability, and biological toxicity of saline-alkali ions As a result, crops cannot grow normally, or even die. In addition, excessively high soluble salt also produces antagonistic effects on plant nutrients. Therefore, the yield of crops in saline-alkaline areas is not high, and the survival rate of afforestation is low, which seriously affects the economic development and improvement of ecological environment in saline-alkali are...

AI Technical Summary

Problems solved by technology

Extensive application of chemical fertilizers in saline-alkali land will aggravate soil salt damage, which is not conducive to the normal growth of crops, and even lead to their death; only using organic fertilizers will make it difficult to play the role of organic matter, and the fertilizer effect will be poor; only using biological fertilizers will inhibit the growth of soil microorganisms. Active, the effect is not good

If several fertilizers are used in combination, the effect is better, but the soil cannot be improved, and the input cost is too high, which increases the burden on farmers

There are also soil improvers in the prior art, but the design principle only considers the change of soil physical and chemical properties, and does not systematically consider the improvement of soil physical and chemical properties, increase soil organic matter and fertility, improve soil root system and soil microbial living environment, and improve the effect. not ideal

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