Preparation method of functional organic fertilizer for soil restoration

Abstract

The invention discloses a preparation method of a functional organic fertilizer for soil restoration. The method comprises the following steps: mixing crushed straws with blue-green algae according to the mass ratio of (1-5):10 to obtain a mixture, and then adding a biomass-transformed complex microbial inoculant and a biomass-transformed inductive material to the mixture; evenly mixing and then carrying out conventional stacking fermentation for 5-15 days, so as to obtain a semi-solid organic fertilizer; and mixing and pelletizing the semi-solid organic fertilizer, clay, biomass carbon ash and a heavy metal ion chelating agent according to the ratio of 1000:(50-200):(50-150):(1-5), so as to obtain the functional organic fertilizer for soil restoration. The organic fertilizer disclosed by the invention has a persistent slow-release fertilizer effect, and can adsorb, chelate and immobilize the heavy metal ions in a deactivation manner, soil fleeciness is facilitated, the moisture retention and the breathability are improved, rooting of plants is facilitated, formation of beneficial components of soil microelements and the like is optimized, the heavy metal-polluted soil is effectively restored, and secondary pollution of the soil is not caused.

Description

1. Technical field [0001] The invention relates to a preparation method of a functional organic fertilizer for soil restoration, which is used for the treatment of heavy metal polluted soil. 2. Background technology [0002] Due to the excessive application of pesticides and herbicides, the disorderly discharge of industrial pollution causes the pollution of surface water and groundwater, which directly leads to the pollution of cultivated land. The area of ​​cultivated land polluted by heavy metals in my country accounts for about 1 / 5 of the total cultivated land area. In my country's sewage irrigation areas, 65% of the land is polluted by heavy metals, of which 47% are lightly polluted, 10% are moderately polluted, and 8% are severely polluted. Cd, Cu, Hg, Pb, As, etc. in grains and vegetables exceed the standard seriously, causing huge economic losses to agriculture. The most economical way to remediate heavy metal-contaminated soil is in-situ treatment, such as applying...

AI Technical Summary

Problems solved by technology

Cd, Cu, Hg, Pb, As, etc. in grains and vegetables are seriously exceeded, causing huge economic losses to agriculture

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