Soil conditioner

Abstract

The invention discloses a soil conditioner. The soil conditioner is prepared from the following raw materials in parts by weight: 35-50 parts of straw pellets, 30-50 parts of sesbania powder, 3-5 parts of strain powder, 10-20 parts of dissolving-out agent, 15-20 parts of adsorbent, 5-7 parts of precipitant, 5-10 parts of phosphorite and 5-15 parts of urea. The dissolving agent in the soil conditioner disclosed by the invention is used for dissolving out heavy metal ions contained in the soil, and a water-soluble and migratory pollutant is changed into a substance with poor mobility and low toxicity due to the precipitation and adsorption actions of a precipitant and an adsorbent, so that the bioavailability of the pollutant in the soil is reduced, and the migration of the pollutant to other environmental systems is reduced; and meanwhile, nutrient elements required by plants are temporarily replenished by the phosphorite and the urea, and various nutrient elements are effectively provided for the plants for a long term by virtue of microorganisms.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil conditioner. Background technique [0002] At this stage, soil improvement mainly uses soil conditioners. At present, most soil conditioners use calcium hydroxide (lime) to adjust acidic soils, and calcium sulfate (gypsum) to adjust alkaline soils. The product has a single function; or humic acid is used. , humic acid is rich in a large amount of organic matter, and can improve the utilization rate of fertilizer nutrients, but because most of the current production methods of humic acid are raw powder produced by crushing weathered coal, peat, lignite, etc., the active center in humic acid is not If it is fully opened, the efficacy of the active functional group of humic acid cannot be truly displayed, and its effect is greatly reduced. [0003] In the traditional method of improving soil acidification, although the application of lime alleviates the degree of so...

AI Technical Summary

Problems solved by technology

Although the above improvers can neutralize soil acidity to a certain extent, and the raw materials are relatively sufficient, there are also some shortcomings, such as the use of dolomite to consume valuable mineral resources and increase the cost of agricultural production; most industrial Waste contains a certain amount of toxic metal elements, such as phosphogypsum and phosphate rock powder contain a small amount of lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), chromium (Cr)

Images