Low-cost greening method for coastal hydraulic reclamation high-saline-and-alkaline exposed field

A low-cost, saline-alkali technology, applied in the fields of botanical equipment and methods, horticulture, plant cultivation, etc., can solve the problems of large amount of engineering, high cost, difficult to survive plants, etc., to improve salt tolerance, reduce engineering, Quickly build effects

Active Publication Date: 2016-05-25
天津泰达园林规划设计院有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the seawater environment, the dredger fill soil has a tight texture, high salt content, and strong alkalinity, making it difficult for plants to survive, especially when the soil salt content is ≥ 25g/kg (heavily saline-alkali land). Suaeda salsa and other strong salt-tolerant and halophytic plants cannot grow at all, and the new land reclamation is in a state of bare land. The existing greening technology mainly based on "soil improvement" and "salt drainage proje

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] The example test started in mid-May 2015 and was carried out at the original soil greening test and research base of TEDA Greening Group in Nangang Industrial Zone, Tianjin, with an area of ​​800m2 2 (40m×20m), the average salt content of the 0-40cm topsoil layer is 37.2g / kg, pH value 8.39, bare land, no plant survival. Divide the test area into two blocks, each 400m 2 (20m * 20m), one piece is used as the test field of the present invention, and the other piece is the conventional method Tamarix planting control area. The specific implementation steps are:

[0035] A low-cost greening method for dredging and reclamation of heavy saline-alkali bare land in the coastal area, comprising the following steps: according to the "checkerboard method" point distribution, sample collection is carried out on the 0-40cm topsoil layer in the test area, a total of 30 typical sample points are collected, and the soil is collected indoors. Salt content analysis: Collect 1-year-old T...

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Abstract

The invention relates to a low-cost greening method for a coastal hydraulic reclamation high-saline-and-alkaline exposed field. Tamarix chinensis plants are made to be in the growth mode of 'activation growth-low salinity adaptation-high salinity dormancy-low salinity fast growth' under domestication and induction by regulating the gradient arrangement of the salinity environment reasonably, so that the salt tolerance of tamarix chinensis is improved and establishment of a coastal hydraulic reclamation high-saline-and-alkaline exposed field ecology landscape is achieved. By achieving quick establishment of the hydraulic reclamation high-saline-and-alkaline exposed field ecology landscape through reasonable regulation of the gradient arrangement of the plantlet environment, salt elimination is not needed, soil condition improvement is not needed, and compared with the existing saline-alkali soil greening technique characterized in soil condition improvement and salt elimination, the method has the advantages that engineering load is reduced greatly, maintenance investment is not needed, cost is low, and construction cost is only 5-10% that of the existing saline-alkali soil greening technique.

Description

technical field [0001] The invention relates to a technical method for low-cost greening of heavy saline-alkali bare land in the coastal area, in particular to a technical method for low-cost greening of coastal heavy-saline-alkali bare land. Background technique [0002] Coastal dredging is a sedimentary soil formed by dredging the seabed mud from the offshore through hydraulic dredging. Affected by the seawater environment, the dredger fill soil has a tight texture, high salt content, and strong alkalinity, making it difficult for plants to survive, especially when the soil salt content is ≥ 25g / kg (heavily saline-alkali land). Suaeda salsa and other strong salt-tolerant and halophytic plants cannot grow at all, and the new land reclamation is in a state of bare land. The existing greening technology mainly based on "soil improvement" and "salt drainage project" can realize the new land reclamation However, the cost is high and the amount of engineering is large, and the ...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G17/00
CPCA01G17/005A01G22/00
Inventor 赵秀芳王振宇张清刘祥宏
Owner 天津泰达园林规划设计院有限公司
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