Cultivated land soil

Abstract

The invention discloses a cultivated land soil. The cultivated land soil is prepared from, by weight, 30-50 parts of sand, 50-70 parts of soil, 20-30 parts of organic matter and 5-8 parts of fertilizer, wherein the soil can be selected from one or two of yellow soil and red soil, the fertilizer comprises one or a compound of nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, boron, manganese, zinc, copper, selenium, molybdenum and chlorine, and the soil further comprises beneficial bacteria and a PH regulator. According to the cultivated land soil, all the substances except the beneficial bacteria are mixed to be uniform, high-temperature water vapor is adopted for sealed pressurizing, the temperature of the soil reaches 150 DEG C to 200 DEG C, disinfection and sterilization are conducted, and the beneficial bacteria are added. The cultivated land soil is synthesized through an artificial method, and soil texture which is most suitable for plant growth is synthesized according to growth requirements of different crops; various germs, worm eggs and weed seeds in the cultivated land soil are eliminated, and a foundation is laid for planting organic crops later; existence of heavy metal, pesticide and chemical fertilizer in cultivated land is completely eradicated, and various planted foods are very safe.

Description

technical field [0001] The invention relates to the technical field of artificial planting land, in particular to cultivated land soil. Background technique [0002] Soil refers to the loose surface layer on the land surface that is fertile and capable of growing plants, and its thickness is generally about 2 m. Soil provides mechanical support and the required water, fertilizer, air, heat and other elements for plant growth. However, the rapid growth of population and the rapid development of industry make solid waste piled and dumped on the soil surface continuously, harmful waste water continuously seeps into the soil, and harmful gases and floating dust in the atmosphere continue to fall into the soil with rainwater, resulting in a large amount of soil damage. Pollution, polluted soil will reduce the yield and quality of crops planted in it, and indirectly affect human health through food, vegetables, fruits, etc. [0003] To control soil pollution, we must first reduc...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of cultivated land soil, which solves the problem that a large amount of sand in the desert area of ​​our country cannot be used, the existing cultivated land is cultivated for a long time, the soil is hardened, there are many germs, insect eggs and weed seeds, pesticide residues, poor land, decreased fertility, heavy metals and harmful substances. The problem of material contamination