Method for preparing excellent planting soil by utilizing gravelly sand, gravel aggregate dewatered sludge and kitchen waste

Abstract

The invention provides a method for preparing excellent planting soil by utilizing gravelly sand, gravel aggregate dewatered sludge and kitchen waste. The method specifically comprises the following steps: firstly, screening the gravelly sand, dewatering the gravel aggregate sludge and reasonably mixing solid products of kitchen waste compost, preparing the planting soil by taking advantages of the solid products to make up the disadvantages, and then spraying a liquid organic fertilizer which is a liquid product, so as to finally obtain the excellent planting soil. The prepared excellent planting soil is good in physicochemical property, loose and ventilated in structure, high in fertilizer efficiency and suitable for creating a soil environment required by plant growth. The soil production technology is high in operability, economical and environmentally friendly, solves the dilemma that high-quality planting soil resources are scarce in most regions in China, conforms to the ecological civilization strategy of promoting green, cyclic and low-carbon development in China, and is wide in application prospect.

Description

technical field [0001] The invention belongs to the field of soil science, and in particular relates to a method for preparing high-quality planting soil by using gravel sand, sandstone aggregate dewatered sludge and kitchen garbage. Background technique [0002] Gravel sand refers to the soil with a high content of large-sized particles. The large particles with a particle size of 0.5-3mm account for about 85-100% of the soil, while the fine soil particles only account for about 0-15%. It is widely distributed in my country. , Inner Mongolia, Heilongjiang and other provinces in the north, tropical coastal islands in the south, and plateaus such as Qinghai-Tibet and Yunnan-Guizhou in the west. Although the distribution areas of various regions vary in size, they generally exceed 65% of the total land area. Although gravel sand has good ventilation and water permeability, it has disadvantages such as leakage of water and fertilizer, lack of organic matter, large evaporation, l...

AI Technical Summary

Problems solved by technology

Although the particle size of sand aggregate dewatered sludge is better than that of gravel sand, it still has the disadvantages of lack of organic matter and low biological production, and is not suitable for the growth and development of most plants.

In addition, the volume stability of dewatered sludge made of sand and gravel aggregates is extremely poor. It is easy to overflow when it meets water, and it is easy to fly into powder when it is dry, which seriously endangers the local living environment.

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