Method for using industrial and agricultural waste residue to improve phosphogypsum for vegetation recovery
A technology of vegetation restoration and phosphogypsum, applied in the fields of botanical equipment and methods, agriculture, land preparation methods, etc., can solve the problems of high cost, low utilization rate of phosphogypsum, and shortage of customer and soil sources, and achieves low cost and improved ground temperature. Water retention capacity, strengthen the effect of cold resistance and overwintering
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[0020] Referring to accompanying drawing, the method for utilizing industrial and agricultural waste residues to improve phosphogypsum for vegetation restoration comprises the following steps:
[0021] (1) Use modifiers (red mud, fly ash and sludge) to improve phosphogypsum, and the ratio of the improved matrix is: phosphogypsum: red mud: fly ash: sludge=81:2:2:15 ( According to the volume ratio), the thickness of the improved matrix is 10~14cm.
[0022] (2) The selected grass species and seeding rate are: white clover 12g / m 2 , tall fescue 30g / m 2 , ryegrass 20g / m 2 , Bermudagrass 15g / m 2 , alfalfa 15g / m 2 , Paspalum broadleaf 20g / m 2 Wait.
[0023] The different stages of plant growth measure its height and root system length and see Table 1 and Table 2:
[0024] Range and mean of grass plant height and root length measured 30 days and 80 days after sowing, respectively.
[0025] Table 1 The maximum and average values of plant height and root length at 30 days (u...
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