Modifier for mildly alkalized soil and processing method thereof

Abstract

The invention relates to a modifier for mildly alkalized soil and a processing method thereof. The modifier for mildly alkalized soil comprises the following raw materials in parts by weight: 70-80 parts of desulfurized waste, 5-10 parts of inorganic accelerator and 10-20 parts of organic accelerator. According to the modifier for mildly alkalized soil, exchangeable sodium on soil colloid is replaced by calcium ions in the desulfurized waste, thereby reducing the alkalization degree; because of the fine pore structure and physical property of the organic accelerator, the physical behavior of the soil and the crumb structure of the soil are improved, the pH value of the soil is reduced, and the fertility of the soil is increased; the inorganic accelerator can also improve the crumb structure of the soil; and an inorganic fertilizer and an organic fertilizer are added to further increase the fertility of the soil and provide nutrient contents for the growth of plants. In a word, the invention can effectively avoid the nutrient element unbalance in the soil, improve the productivity of the soil, loosen the soil, enhance the fertilizer efficiency and thoroughly control the soil salinization phenomenon step by step.

Description

Technical field [0001] The invention relates to a chemical reagent used on soil, in particular, to a mildly alkaline soil amendment and a processing method thereof, belonging to the field of soil improvement. Background technique [0002] The methods and technologies of domestic soil improvement, especially the improvement of saline-alkali land, can be summarized as follows: (1) Physical improvement: leveling the land, deep ploughing and drying, timely loosening the soil, raising the topography, and improving the soil in small areas; (2) water conservancy improvement: irrigation Drainage equipment, storage of fresh water pressure salt, irrigation and washing salt, underground salt discharge; (3) Chemical improvement: application of gypsum, phosphogypsum, superphosphate, humic acid, peat, vinegar residue, etc.; (4) Biological improvement: planting rice , Planting salt-tolerant plants Sesbania, etc., or using micro-bacterial fertilizer, etc. [0003] These improvement techniques and...

AI Technical Summary

Problems solved by technology

If the particle size of the modifier after crushing is large, it is not conducive to the ion exchange reaction, and the improvement effect is poor; if the particle size of the modifier is small after crushing, it will consume a lot of energy, making the cost of soil improvement too high for farmers to bear

Chinese patent application CN101624523A discloses "a saline-alkali improver", which is prepared by mixing aluminum sulfate, ferrous ammonium sulfate and magnesium sulfate according to different weight ratios. A large amount of chemical raw materials are required to make the improver, instead of using Industrial waste, high cost

Chinese patent CN1664064A discloses "an alkaline soil improver" which mainly uses phosphogypsum, straw and urea in different proportions to make a soil improver; High element content will cause heavy metals and harmful trace elements in the improved soil to exceed the allowable value of the national standard

[0005] In general, the disadvantages and technical problems of the prior art are: complex process, high cost, and unsatisfactory effect

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