Construction method for improving and repairing garden planting soil

Abstract

The invention discloses a construction method for garden planting soil improvement and remediation, and belongs to the field of garden remediation, the construction method comprises the following steps: excavating soil on the upper layer of a to-be-remedied soil area, and mixing the excavated soil with a modifier to obtain pre-improved soil; the pre-improved soil and water are mixed and stirred, and improved soil slurry is obtained; the improved soil slurry is poured back to the soil area to be repaired, the soil is turned over, and construction is completed; the preparation method of the modifier comprises the following steps: adding maltodextrin-agar slurry into a polar organic solvent, stirring and mixing, adding almond shell charcoal, heating, dispersing at a high speed, centrifuging and separating to obtain maltodextrin-agar coated microspheres, soaking the maltodextrin-agar microspheres in a soil enzyme preparation, taking out to obtain enzyme modified microspheres, and drying to obtain the modifier. And adding the enzyme-modified microspheres into attapulgite, mixing, sieving, and drying residues on the sieve to obtain the modifier. The method has the advantage that the improvement and remediation effect of the planting soil is improved.

Description

technical field [0001] The present application relates to the field of garden restoration, in particular to a construction method for improving and restoring garden planting soil. Background technique [0002] The improvement and restoration of gardens is one of the basic processes of garden design and construction. Nowadays, the concept of gardens is constantly being promoted, and more and more sites are used to build gardens. Due to the pollution of the construction site itself, there will be many problems in garden construction. Garden improvement and restoration problems, such as heavy metal problems in planting soils in construction sites, acid-base imbalance problems and low fertility problems, etc. [0003] Among them, the problem of heavy metals is the most common problem encountered in the construction of gardens. Too much heavy metals such as Cd, Pb, and Cr in the soil will affect the survival rate and growth of flowers and trees, and then affect the landscape of t...

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Problems solved by technology

[0003] Among them, the heavy metal problem is the most common problem encountered during garden construction. Too much heavy metal Cd, Pb, Cr, etc. in the soil will affect the survival rate and growth of flowers and trees, and then affect the landscape of the garden. In addition, the heavy metal problem will also It leads to the imbalance of the ecological system of the garden, limits the sustainable development of the garden, and also has a negative impact on the residents or passers-by who enter the garden. Therefore, it is extremely important to improve and restore the garden planting soil

[0004] One of the restoration construction methods for heavy metals in soil is to add biochar, and use biochar to interact with heavy metals in the soil to fix heavy metals and reduce the connection between heavy metals and soil particles; Adding too much biochar will affect the composition of the soil itself and affect the planting effect, while adding too little biochar will not have an obvious effect on fixing heavy metals, so the restoration effect on soil still needs to be improved

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