A saline-alkali land modifying agent

Abstract

The invention belongs to the technical field of saline-alkali land modification, and particularly relates to a saline-alkali land modifying agent. The modifying agent includes, by weight, 28-40 partsof phosphogypsum, 28-36 parts of zeolite powder, 24-30 parts of furfural residue, 22-28 parts of turf, 22-28 parts of weathered coal, 8-10 parts of polymaleic anhydride, 16-20 parts of chicken manure,2-4 parts of a microbial agent and 20-26 parts of distilled water. The microbial agent and the chicken manure are cooperated and applied into soil. The chicken manure provides nutrients needed for metabolic activities of microorganisms, and increases the content of microorganisms in soil. Polysaccharides and gelatin which are generated by microorganism metabolism promote formation of granular structures in soil and increase the content of organic matters, the soil is loosened, soil capillary tube gaps are cut off, and salt return is inhibited, and therefore the microbial agent allows the saline-alkali land to form a good microbial environment to achieve a positive cycle, and the saline-alkali land can be radically improved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a saline-alkali land improvement agent. Background technique [0002] Saline-alkali land means that the land is affected by natural or human factors, causing salt substances to gradually penetrate into the soil, so that the soil contains more salt and alkali, and makes this type of land unusable. The saline-alkali land in China is roughly distributed The area is in the northwest, northeast, north China and coastal areas. The main reason for the formation of saline-alkali land is that the land in relatively arid areas evaporates into water vapor and is discharged into the air, but the salt in the water cannot be eliminated and remains in the air. In the soil, after a long period of accumulation, the salt in the soil gradually increases, thus forming a saline-alkali land. Because the saline-alkali soil itself contains too much salt, according to the principle...

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Problems solved by technology

[0002] Saline-alkali land means that the land is affected by natural or human factors, causing salt substances to gradually penetrate into the soil, so that the soil contains more salt and alkali, and makes this type of land unusable. The saline-alkali land in China is roughly distributed The area is in the northwest, northeast, north China and coastal areas. The main reason for the formation of saline-alkali land is that the land in relatively arid areas evaporates into water vapor and is discharged into the air, but the salt in the water cannot be eliminated and remains in the air. In the soil, after a long period of accumulation, the salt in the soil gradually increases, thus forming a saline-alkali land. Because the saline-alkali soil itself contains too much salt, according to the principle of plant cell osmosis, it is difficult for plant cells to absorb inorganic nutrients and water. Cause plants to die due to the lack of inorganic nutrients and water, which in turn causes a vicious cycle of saline-alkali ecology. At present, the main measures for improving saline-alkali land include: biological measures, physical measures, chemical measures and the combination of the three measures. Among them, adding saline-alkali land Improver is an important measure that is simple and efficient. Existing saline-alkali land improvers generally focus on reducing soil pH and salinity, which is relatively deficient in improving the ecology of saline-alkali land itself.

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