Oxygen-increasing coated fertilizer alleviating soil heavy metal pollution

Abstract

The invention discloses an oxygen-increasing coated fertilizer alleviating soil heavy metal pollution. The oxygen-increasing coated fertilizer is prepared from, by weight, 1-2 parts of sodium sulphide, 35-38 parts of peanut meal, 24-26 parts of kelp residue, 2-3 parts of xylitol, 2-3 parts of sodium molybdate, 4-6 parts of calcium carbonate powder, 4-5 parts of river sand, 11-13 parts of urea, 17-18 parts of 30% hydrogen peroxide solution, 2-3 parts of laxogenin powder, 0.7-0.9 part of butyl acrylate, 2-3 parts of sodium dihydrogen phosphate powder, 1.4-1.7 parts of nano-zinc oxide and a proper amount of water. The effect of reducing the migration-state heavy metal ion content in soil is achieved by adding the sodium sulphide and the like in the fertilizer, utilizing sulfur ions and heavy metal ions to generate water-insoluble sulfide precipitates and meanwhile utilizing the adsorbability of the organic particle materials in the fertilizer to fix the heavy metal ion precipitate, the heavy metal pollution of the soil is reduced, and an effective means is provided for farmland management.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to an oxygen-increasing coated fertilizer for alleviating soil heavy metal pollution. Background technique [0002] With the abnormal global climate, heavy rains and floods occur frequently in some areas. At the same time, factors such as improper irrigation or poor drainage often cause waterlogging in crop land, making the soil in a state of flooding. Under flooding conditions, the gas in the soil is forced to discharge. It is easy to cause insufficient oxygen in the soil. Oxygen is necessary for plant root respiration. Long-term hypoxia will hinder the electron transfer of plant cells, accumulate a large amount of active oxygen, damage the structure and function of cell membranes, and even cause a large number of crops to die. Under hypoxic stress, the root system accumulates a large amount of toxic substances such as ethanol and lactic acid, the root metabolism is disordered...

AI Technical Summary

Problems solved by technology

The invention has higher fertilizer nutrient content and faster fertilizer efficiency, but it does not effectively increase the oxygen content of the soil plow layer, and it cannot improve the resistance of crops against unfavorable conditions such as flooding, and there is no significant increase in added value, which limits the use of fertilizers. use