Phosphogypsum soil improver for improving soil salinization and preparation method for phosphogypsum soil improver

• Main Author: XU JISHENG
• Format: Patent
• Language: English
• Published: 13.01.2016
• Subjects: CHEMISTRY; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS

The invention discloses a phosphogypsum soil improver for improving soil salinization. The soil improver is prepared from the following raw materials in parts by weight: 16-19 parts of peat, 7-9 parts of vermiculite power, 5-7 parts of calcium fulvic acid, 15-17 parts of red mud, 10-12 parts of brown coal, 26-28 parts of guano, 2-3 parts of an EM inoculant, 5-6 parts of waste lime peel, 4-5 parts of sodium sulfate, 90-100 parts of phosphogypsum and a proper amount of water. By virtue of a combined effect of calcined gypsum powder, brown coal and vermiculite power, the phosphogypsum soil improver can reduce soluble salt in soil and improve the base exchange ability of soil. As the cation exchange capacity of soil is increased, the ability of holding soil water and fertility of soil is improved, adsorption and utilization of salt base ions are improved, and the bio-availability of nutrients is improved, so that the soil improver plays roles of improving soil salinization, retaining fertilizers, and supplying fertilizers.