A Method for Ecological Transformation of Hardened Ditch

An ecological and ditch technology, applied in the field of farmland environmental protection, can solve the problems of inability to absorb and adsorb, degrade nitrogen and phosphorus, low water and nutrient recycling rate, and shorten residence time of pollutant purification, so as to enhance ecological value and reduce rice field runoff load, the effect of enriching biodiversity

Inactive Publication Date: 2017-07-25
INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the non-point source pollution caused by the paddy and dry rotation mode of farmland is becoming more and more serious. Excessive input of nitrogen and phosphorus fertilizers, extensive water management during the alternating flood and drought periods, low water and nutrient recycling rates, and the fragility of the farmland ecosystem brought about by a single planting structure have caused Farmland ecological self-purification function degradation, etc.
[0003] Due to the problems of overgrown weeds, soil erosion and poor water flow in traditional soil ditches, which pollute the receiving water body, the existing technology is that farmers widen the soil ditches and transform them into hardened ditches. The ditches are easy to maintain, but the water flow is too fast , resulting in shortened purification residence time of pollutants in the ditch; in addition, lack of plants and microorganisms, unable to absorb, absorb, and degrade nitrogen and phosphorus in water. Therefore, the tail water treatment is insufficient, the farmland ecosystem is fragile, and non-point source pollution is becoming more and more serious

Method used

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  • A Method for Ecological Transformation of Hardened Ditch
  • A Method for Ecological Transformation of Hardened Ditch
  • A Method for Ecological Transformation of Hardened Ditch

Examples

Experimental program
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Embodiment 1

[0042] A method for ecological transformation of a hardened ditch, comprising the following steps:

[0043] Step 1: Cleaning of hardened ditches and division of alternate construction areas of retaining wall type ecological ditch and floating type ecological ditch

[0044] Use tools to remove the weeds and silt around the wall of the hardened ditch 1, first divide a 200-meter-long wall-protected ecological ditch construction area on the cleaned ditch 1, and then leave a 100-m blank ditch, and then clean the ditch. On 1, a floating ecological ditch construction area of ​​about 201m is divided;

[0045] Step 2: Installation of baseboard components and construction of spacers

[0046] Use the fixed bracket 2 to fix the clapboard 3 on both sides of the ditch 1 and the bottom of the ditch 1 in the construction area of ​​the clapboard type ecological ditch. There is a distance of 0.25m between the clapboard and the walls of the two sides. Leave a distance of 0.4m from the bottom w...

Embodiment 2

[0061] A method for ecological transformation of a hardened ditch, comprising the following steps:

[0062] Step 1: Cleaning of hardened ditches and division of alternate construction areas of retaining wall type ecological ditch and floating type ecological ditch

[0063] Use tools to remove the weeds and silt around the wall of the hardened ditch 1, and first divide a 200-meter wall-protected ecological ditch construction area on the cleaned ditch 1, and then leave a 100-m blank ditch, and then clean the ditch. On 1, a floating ecological ditch construction area of ​​about 201m is divided;

[0064] In step 1, a 100m blank ditch is left between the construction area of ​​the retaining type ecological ditch and the construction area of ​​the floating type ecological ditch, and the retaining type ecological ditch and the floating type ecological ditch are constructed alternately, and the blank ditch upstream of the floating type ecological ditch is set The aeration device 16, ...

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Abstract

The invention relates to an ecological reconstruction method for a hardened ditch and belongs to the field of farmland environment protection. By constructing a floating type ecological gully, or a retaining wall type ecological gully or a floating-retaining wall alternative mixed type ecological gully, and correspondingly planting emergent aquatic plants, floating plants and submerged plants which have pollutant adsorption capacity, farmland tail water is processed, loads of nitrogen and phosphorus nutrients and the like are reduced, the runoff loads of rice fields are effectively lowered, eutrofication of a water body is prevented, and the processing effect of the farmland tail water is improved; the biodiversity of farmlands is enriched, the self cleaning capacity of non-point source pollution of the farmlands is improved, the ditch is ecologically hardened, the farmland landscape is beautified, and the ecological value of the farmlands is improved.

Description

technical field [0001] The invention belongs to the field of farmland environmental protection, and in particular relates to a method for ecological transformation of hardened ditches. Background technique [0002] At present, the non-point source pollution caused by the paddy and dry rotation mode of farmland is becoming more and more serious. Excessive input of nitrogen and phosphorus fertilizers, extensive water management during the alternating flood and drought periods, low water and nutrient recycling rates, and the fragility of the farmland ecosystem brought about by a single planting structure have caused Degradation of farmland ecological self-purification function, etc. [0003] Due to the problems of overgrown weeds, soil erosion and poor water flow in traditional soil ditches, which pollute the receiving water body, the existing technology is that farmers widen the soil ditches and transform them into hardened ditches. The ditches are easy to maintain, but the wa...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): E02B13/00C02F3/32
CPCY02W10/10
Inventor毛妍婷雷宝坤陈安强刘宏斌翟丽梅王洪媛朱红业杨艳鲜续勇波段宗颜鲁耀杜彩艳王应学陈拾华
OwnerINST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI