Saline and alkaline land improver containing phosphogypsum and trimethylene tetrarea and using method

Abstract

The invention provides a saline and alkaline land improver containing phosphogypsum and trimethylene tetrarea and a using method. The saline and alkaline land improver comprises the following raw materials in parts by weight: 100-400 parts of phosphogypsum, 2-30 parts of humilic acid, 5-40 parts of trimethylene tetrarea, 0.1-1 part of phthalic acid and 0.1-1 part of polyethylene glycol. The using method comprises: firstly, treating the saline and alkaline land by using phosphogypsum and trimethylene tetrarea; and then treating the saline and alkaline land by using trimethylene tetrarea, phthalic acid and polyethylene glycol. The saline and alkaline land improver in the formula matched with the using method can quickly improve the saline and alkaline land which is suitable for crop growth. Moreover, the improver is relatively wide in applying range and suitable for improving salinized soil caused by different reasons in different regions. By applying the improver to the saline and alkaline, the soil structure can be improved, the soil alkalinity can be reduced, the salt elimination rate of soil can be improved, the soil fertility can be improved, the growth of crops can be accelerated, and the agricultural economy can be improved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land treatment, in particular to a saline-alkali land improver containing phosphogypsum+trimethylene tetraurea and a use method thereof. Background technique [0002] Saline-alkali land is a general term for saline soil, alkaline soil and various salinized and alkalized soils. Saline soil refers to the soil in which the soluble salt content in the soil reaches a certain level, which can cause obvious harm to the growth and development of plants. Alkaline soil refers to the soil that contains a large amount of exchangeable ions in the soil, and the amount reaches the level that can harm the growth and development of plants and change the soil properties. In actual conditions, saline soil and alkaline soil often coexist in a mixed form, collectively referred to as saline-alkali soil. [0003] Saline-alkali land is an important land resource, and it is a soil type widely distributed on the ea...

AI Technical Summary

Problems solved by technology

At present, there are many soil amendments for chemical treatment of soil salinization, such as gypsum, calcium sulfate, superphosphate, industrial waste phosphogypsum, industrial waste acid, organic fertilizer, humic acid, fly ash, peat, fermented vinegar These have achieved certain effects on improving saline-alkali land. More commonly used are organic fertilizers and gypsum, of which gypsum is made of Ca 2+ Substitution of Na + And use acid to neutralize alkali to improve saline-alkali land; but limited by complex production process, high cost and other conditions, it cannot be popularized in a large area

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