Modified mineral material and method for preparing farmland soil ecological preparation

Abstract

The present invention discloses a modified mineral material and a method for preparing a farmland soil ecological preparation, the method for preparing the farmland soil ecological preparation comprises the following steps: (a) the modified mineral material, animal and poultry manure and straw powder are mixed in the mass ratio of 1: 3: 3-1: 5: 5 to obtain a mixture; (b) a thermophilic complex microbial agent accounting for 3%-5% by mass of the mixture is added into the mixture for full stirring and even mixing; (c) the mixed material is put into high-temperature fermentation equipment, electrically-heated to 80-100 DEG C, and thermally insulated for 4-8h; and (d) the fully fermented dried material is prepared into particles by a pelletizer and then packed to obtain a farmland soil ecological preparation finished product. The prepared farmland soil ecological preparation is high in fertility, and easily absorbed by crops, and the fertilizer utilization can be increased by 10%-20%.

Description

technical field [0001] The invention belongs to the field of farmland soil ecological restoration, and in particular relates to a modified mineral material and a preparation method of farmland soil ecological preparations. Background technique [0002] Since the founding of the People's Republic of China, especially over the past 30 years of reform and opening up, my country's crop production has achieved breakthrough development. In recent years, China's total grain output has ranked first in the world. With less than 10% of the world's arable land, we have solved the problem of feeding the Chinese, who account for about 22% of the world's population. Planting production has played an important supporting role in the steady and rapid development of my country's economy, and the most direct factor affecting planting production is the quality of cultivated land soil. It can be seen that the importance of soil for the development of our national economy and social stability. ...

AI Technical Summary

Problems solved by technology

[0005] At present, there are still few technical patents that can effectively remove heavy metal pollution in soil without damaging the soil ecological environment and at the same time effectively enhance soil fertility

The Chinese patent with the publication number CN104984992A discloses a method for repairing heavy metal-contaminated soil by pressure filtration and leaching. The amount is large, the processing cost is high, and it is easy to cause secondary pollution

The Chinese patent with publication number CN104907329A discloses a method for solidification / stabilization treatment of heavy metal contaminated soil in mining areas. The method uses apatite, fly ash and quicklime as raw materials to prepare a solidification stabilizer. The stabilizer raw material It has a wide range of sources and is cheap. It wraps heavy metal ions in gel particles through adsorption, precipitation, complexation, etc., and has a good adsorption effect. However, as the soil environment changes, these heavy metal ions may form anti-solution

The Chinese patent with the publication number CN104927871A discloses a heavy metal stabilizer and a method for using the heavy metal stabilizer. The stabilizer uses phosphate, quicklime, zeolite powder and potassium chloride as raw materials, and the cost is relatively low, which can realize the high concentration of heavy metals. Stabilization, effectively preventing the inversion and seepage of heavy metal ions, but this method cannot completely remove heavy metal ions in the soil

The Chinese patent with the publication number CN104959109A discloses a preparation method of a sulfuric acid lignin-modified sepiolite adsorbent. A kind of adsorbent is prepared by using sepiolite with relatively abundant reserves and lignin, a by-product of papermaking industry, as raw materials. Simple operation, low cost, green and pollution-free, can be used to adsorb a variety of heavy metal elements, and has a wide range of applications, but this adsorbent still cannot completely remove heavy metals in the soil, the repair period is long, and there is currently no good recycling method

The Chinese patent with publication number CN104892324A discloses an organic fertilizer that can improve the microenvironment of plant rhizosphere soil. It can also reduce soil salinization, enhance soil fertility, and improve the living environment of microorganisms. However, this method has a long fertilizer fermentation cycle and the effect of dealing with heavy metal pollution is not significant enough.

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