Greening method for dredger fill

A technology for blowing soil and planting areas, which is applied in land preparation methods, climate change adaptation, agricultural machinery and implements, etc., can solve the problems of unsustainable greening methods, small porosity and permeability coefficient, and low natural desalination rate, etc. Achieve the effect of poor structure, small porosity and permeability coefficient, and high salinity

Inactive Publication Date: 2011-05-04
天津市绿源环境景观工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to overcome the deficiencies in the prior art and provide a greening method of dredger fill soil, aiming at high salt content, heavy texture, Poor structure, small porosity and permeability coefficient, extremely low natural desalination rate, difficult greening, and unsustainable existi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of greening method of dredging fill, concrete steps are as follows,

[0015] 1. Transformation of the planting area

[0016] Excavate the dredging fill in the area to be greened, lay a percolation layer, the depth of the percolation layer is 1m, the thickness is 15cm, and the slope is greater than 1 / 1000; lay blind pipes, and dig 0.3m wide blind pipe ditches every 30 meters , the slope is greater than 3 / 1000, the inner diameter of the blind pipe is 8cm, sand or furnace ash is laid around the blind pipe, leading to the water collection well or drainage ditch; the dredged fill soil is mixed with 1 / 4 cow dung or straw backfill;

[0017] 2. Irrigation and salt drainage

[0018] After the transformation of the planting area is completed, it will be irrigated with flood water at a rate of 120 cubic meters per mu to reduce the salinity of the soil;

[0019] 3. Micro-zone regulation

[0020] According to the different seedlings, dig planting holes or planting ditch, g...

Embodiment 2

[0022] A kind of greening method of dredging fill, concrete steps are as follows,

[0023] 1. Transformation of the planting area

[0024] Excavate the dredging fill in the area to be greened, lay the infiltration layer, the depth of the infiltration layer is 1.2m, the thickness is 20cm, and the slope is greater than 1 / 1000; lay dead pipes, and dig 0.4m wide blind pipes every 30 meters Ditch with a slope greater than 3 / 1000, the inner diameter of the blind pipe is 15cm, and sand or furnace ash is laid around the blind pipe, leading to the water collection well or drainage ditch; the excavated filling soil is mixed with 1 / 3 of cow dung or straw for backfilling;

[0025] 2. Irrigation and salt drainage

[0026] After the transformation of the planting area is completed, flood irrigation with a water volume of 150 m3 / mu reduces the salinity of the soil;

[0027] 3. Micro-zone regulation

[0028] According to the different seedlings, dig planting holes or planting ditch, the tr...

Embodiment 3

[0030] A kind of greening method of dredging fill, concrete steps are as follows,

[0031] 1. Transformation of the planting area

[0032] Excavate the dredging fill in the area to be greened, lay the infiltration layer, the depth of the infiltration layer is 1.2m, the thickness is 18cm, and the slope is greater than 1 / 1000; lay dead pipes, and dig 0.3m wide blind pipes every 30 meters Ditch with a slope greater than 3 / 1000, the inner diameter of the blind pipe is 10cm, and sand or furnace ash is laid around the blind pipe, leading to the water collection well or drainage ditch; the excavated filling soil is mixed with 1 / 4 of cow dung or straw for backfilling;

[0033] 2. Irrigation and salt drainage

[0034] After the transformation of the planting area is completed, it will be irrigated with flood water, and the irrigation volume will be 140 square meters per mu to reduce the salinity of the soil;

[0035] 3. Micro-zone regulation

[0036] According to the different seedl...

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PUM

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Abstract

The invention relates to a greening method for dredger fill, which is characterized by comprising the following steps of: reforming a planting zone; paving a percolating layer; paving a blind pipe, paving sand or stove ash on the periphery of the blind pipe, and leading to a drainage sump or a drainage ditch; blending and mixing 1/4 to 1/3 of cow dung or straw with the dredged dredger fill, and refilling; performing irrigating and saline drainage, namely irrigating by flood water to reduce the salinity of soil; and regulating and controlling a microzone, namely dredging a planting cave or a planting ditch, and blending and mixing original soil and river sand, the cow dung and turfy soil in a ratio of 4:2:2:1 to improve the environment of the microzone in which nursery stocks grow and improve the survival rate of the nursery stocks. The greening method has the advantages that: the percolating layer and the blind pipe are paved, and the original soil and the straw or the cow dung are blended and mixed to be refilled so as to improve the voidage and permeability of the dredger fill and provide the possibility for further desalination; the salinity of the soil can be reduced effectively by flood-water irrigating, so that saline water is discharged from the percolating layer and the blind pipe; the regulation and control of the microzone is favorable for desalination and salt restraint, and can provide the environment and nutrient substances which are required by plant growth, so that the survival rate of the nursery stocks is over 90 percent.

Description

technical field [0001] The invention belongs to coastal saline-alkali land greening technology, in particular to a greening method for coastal saline-alkali land vegetation construction by blowing and filling soil. Background technique [0002] Dredger fill soil is new land soil such as dredging port construction, beach dredging fill, and salt pan dredging fill. There is no soil forming process, and the salt content is high. Generally, the salt content is above 10.0g / kg. The texture is heavy and the structure is poor. , the specific gravity and bulk density are large, the porosity and permeability coefficient are small, and the natural desalination rate is extremely poor. The surface is generally devoid of vegetation. Afforestation on dredger fill with no grass growing has always been an internationally recognized "worldwide problem". At present, most of the research reports on dredger fill are focused on how to find a more reasonable and economical reinforcement technolog...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCY02A40/10
Inventor 刘海崇刘静
Owner 天津市绿源环境景观工程有限公司
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