Plant culture medium for plant growth cement concrete

Abstract

The invention discloses a plant culture medium for plant growth cement concrete, which is composed of following raw materials, by weight, 45-70 parts of papermaking sludge, 5-15 parts of high-water-absorption resin, 5-30 parts of vermiculite, 5-20 parts of peat soil, 1-5 parts of rice hull powder and 3-15 parts of a slow-release fertilizer. The plant culture medium is high in water absorption rate and is long in fertilizer efficiency durable time, and is reduced in alkali degree in gaps in the plant culture medium so that the plant culture medium is suitable for plant growth. The raw materials of the plant culture medium are easy to obtain and are low in cost. The plant culture medium is reduced in the alkali degree in gaps so that the plant culture medium is suitable for plant growth and can satisfy requirement on water and nutrients in normal growth. The plant growth cement concrete can protect side slopes and also afforest the side slopes, thereby protecting ecologic environment of the side slopes.

Description

technical field [0001] The invention belongs to the field of environment-friendly building materials, and in particular relates to plant-growing cement concrete, in particular to a plant culture medium for plant-growing cement concrete. Background technique [0002] Plant-grown cement concrete is a concrete with a porous and macroporous structure that is formed by wrapping a layer of cement slurry on the surface of a single-size coarse aggregate. Because of its high connected porosity and high mechanical strength, plant-grown cement concrete is often used to fix slopes and prevent soil erosion. Compared with the ordinary concrete slope protection technology, planting cement concrete can not only protect the slope, but also green the slope and restore the ecological environment of the slope. [0003] However, the structure of the plant-grown cement concrete matrix is ​​dense, and plants cannot grow directly on the plant-grown cement concrete matrix. It must be filled in the ...

AI Technical Summary

Problems solved by technology

[0003] However, the structure of the vegetable cement concrete substrate is dense, and plants cannot grow directly on the vegetable cement concrete substrate. It must be filled in the concrete voids and the concrete surface is covered with a plant growth substrate, usually ordinary soil.

Because the connected porosity of plant-grown cement concrete is 25-30%, there is less plant growth substrate filled in the gaps, and the thickness of the plant growth substrate covered by the concrete surface is only 1-2cm. Therefore, it is very difficult to use ordinary soil as a plant growth substrate. Difficult to meet the water and nutrient needs of plants for normal growth

In addition, the alkalinity (pH value) in the voids of vegetable cement concrete is relatively high, which is not suitable for plant growth.

Therefore, the popularization and application of vegetable cement concrete is severely restricted.