Modified zeolite-based soil amendment for saline-alkali land and preparation method thereof

Abstract

The invention discloses a modified zeolite-based soil amendment for saline-alkali land. Raw materials of the soil amendment comprise, by weight, 1000-1500 parts of modified zeolite, 1000-1300 parts of polyacrylamide, 1000-1500 parts of chitosan, 800-1200 parts of powdered rock phosphate, 1200-1800 parts of nano-calcium carbonate, 35-50 parts of peat, 10-20 parts of calcium humate, 50-80 parts of magnesium sulfate, 60-90 parts of a compound enzyme preparation and 30-60 parts of ferment bacteria. By the use of the soil amendment for saline-alkali land with modified zeolite as a carrier, nutrient release speed of a fertilizer in soil can be effectively reduced, fertilizer efficiency period is long, and pollution to the environment and water body is reduced. In addition, the product has good functions of holding moisture, loosening soil and preventing soil hardening, etc.

Description

Technical field [0001] The invention relates to a saline-alkali soil conditioner based on modified zeolite and a preparation method thereof. Background technique [0002] Soil salinization has a relatively large damage to the physical and chemical properties of the soil, which is extremely unfavorable to the growth of many crops, and easily causes crop shortage or death, thereby hindering the development of agricultural economy. Due to the high salt content, low organic quality, and high pH of saline-alkali land, soil humus is leached and soil structure is destroyed. It is sticky when wet and hard when dry. There are often white salt accumulations on the soil surface, poor ventilation and water permeability. In severe cases, it can cause plant wilting, poisoning and death of rotten roots. In addition, the soil is too alkaline, which affects the availability of nutrients such as phosphorus, iron, manganese, boron, and zinc in the soil, and easily causes a large amount of the main...

AI Technical Summary

Problems solved by technology

However, the effect of simply using zeolite as a slow and controlled release material as a fertilizer carrier is not good. It is necessary to physically and chemically modify the zeolite and add a certain amount of compound materials.

[0004] At present, the commonly used secondary saline-alkali soil fertilizers have poor controlled release performance, and the slow-release effect of fertilizers is not ideal enough to improve saline-alkali land for a long time.