Method for quickly improving carbon sequestration capacity of soil in industrial and mining wasteland
A technology of abandoned land, industrial and mining, applied in the field of rapid improvement of soil carbon sequestration capacity in industrial and mining abandoned land on the Loess Plateau, which can solve the problem that there is no industrial and mining abandoned land soil using technology or patent reports to rapidly improve soil carbon sequestration capacity in mining areas, and carbon-increasing measures cannot be used. Superposition effect, large room for technical improvement, etc., to achieve the effect of taking into account economic and ecological benefits, low organic carbon content, and improving soil microbial activity
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Embodiment 1
[0036] In view of the characteristics of low organic carbon content, poor nutrients, poor biological activity, and low crop yield in the mining area soil, this example uses topsoil stripping, subsoil filling with straw, farm manure and nitro humic acid mixed layering application, and spraying microbial agents , Crop rotation and other measures can effectively improve the effect of soil carbon sequestration.
[0037] The test site was selected as the test base in Ke'e Village, Xiabao Town, Xiaoyi City, Shanxi Province. This area is a hilly area of the Loess Plateau, with an average annual rainfall of about 400mm, deep soil layer, serious soil erosion and low fertility. The local area is rich in coal and bauxite, and the mining method is mainly open-pit mining.
[0038] The site is an industrial site abandoned by aluminum mines for many years, covering an area of 122 mu, in the shape of a parallelogram. It was reclaimed in the spring of 2007. The basic data of the surface ...
Embodiment 2
[0057] The test site was selected at the base of Xishandi Village, Wangqiao Town, Xiangyuan County, Shanxi Province. The base is a thick loess-covered area, and the mining method is underground mining. After mining, it gradually began to subside in a pot-shaped subsidence, which directly affected land cultivation.
[0058] Reclamation began in 2008. During the reclamation, the topographic survey was first carried out, and on this basis, bulldozers were used for leveling, pushing higher and lower, and finally using laser levelers for secondary leveling.
[0059] The total area of the collapsed land is 32 mu, which is irregular. The local annual average rainfall is 510mm, the soil layer is deep and the fertility is medium.
[0060] The basic data of the surface soil (0-20cm) of the test base are as follows: average soil organic carbon content 2.35g / Kg, pH value 8.23, total nitrogen 0.039%, available phosphorus 5.25mg / Kg, available potassium 75.6mg / Kg, soil bulk density 1.46g ...
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