Ecological protection method for coastal tidal-flat area and system employed

An ecological protection and coastal technology, applied in the direction of coastline protection, soil preparation method, fertilization method, etc., can solve the problems of lack of organic matter, high soil salinity, long cycle, etc.

Active Publication Date: 2020-04-07
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coastal tidal flats are characterized by high soil salinity, low soil nutrients, and lack of organic matter. The traditional improvement method is to pour fresh water into the newly reclamated coastal tidal flats and soak them in salt to lightly salinized soil before planting crops. Although this method works well, the Large investment, long cycle, low economic benefits, and easy to cause damage to the ecological environment

Method used

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  • Ecological protection method for coastal tidal-flat area and system employed
  • Ecological protection method for coastal tidal-flat area and system employed
  • Ecological protection method for coastal tidal-flat area and system employed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The present embodiment is the coastal beach ecological protection method, comprising:

[0074] The first step is to plan and design the polder pond project according to the specific conditions of the target coastal tidal flats to be protected.

[0075] The second step is to dig fishing ditches and build polder dikes on the beach surface of the target coastal tidal flats, and at least one dike pond will be surrounded by dikes. The height of the embankment is 0.8-1.6m; in this way, a polder pond with large water surface, shallow water layer and seasonal dew beach is formed. The large water surface means that the water surface area of ​​a single polder pond is at least 100 mu when the water is stored on the beach surface, and the shallow water layer is It means that when the beach surface is impounded, the water storage depth is at least 0.8m and at most does not exceed the height of the polder dike. Excavate mutually independent drainage ditches and replenishment canals ...

Embodiment 2

[0101] This embodiment is the coastal tidal flat ecological protection system adopted in Embodiment 1, which is constructed through the following steps:

[0102] According to the specific conditions of the target coastal beach to be protected, plan and design the polder pond project; dig fishing ditches and build polder embankments on the beach surface of the target coastal tidal flat, and use polder dikes to enclose at least one polder pond, in which the fishing ditch and the beach surface are mutually connected Adjacent to each other, the depth of the fishing ditch is 2-2.5m, and the height of the embankment is 0.8-1.6m; thus forming a polder pond with a large water surface, a shallow water layer, and a seasonal dew beach. The large water surface refers to a single pold pond on the beach surface When storing water, the water surface area is at least 100 mu. The shallow water layer refers to the water storage depth of at least 0.8m and no more than the height of the embankment...

Embodiment 3

[0117] This embodiment adopts the coastal beach ecological protection method of embodiment 1.

[0118] In the third step, when both aquaculture and emergent plants are planted on the beach, the preset fish farming mode is adopted. The fish farming mode includes fish-rice rotation or intercropping, fish-grass rotation or intercropping, fish-wheat Crop rotation or intercropping, fish-rape crop rotation or intercropping, fish-salt-tolerant plant rotation or intercropping combined planting and breeding modes.

[0119] In the combination of planting and breeding of fish-wheat rotation, the ratio of the land area of ​​the fishing ditch to the planting area of ​​barley is 1:1-20; the first preset time period is from October of the current year to May of the next year, The preset time period is from May of the next year after wheat harvest to October, the third preset time period is from October of the next year to before the next first preset time period; the fourth preset time perio...

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Abstract

The invention relates to an ecological protection method for a coastal tidal-flat area and a system employed. The method comprises the steps: planning and designing polder pond projects according to specific conditions of a target coastal tidal-flat area to be protected; carrying out fishing ditch excavating and polder embankment constructing on a beach face of the target coastal tidal-flat area,enclosing at least one polder pond based on polder embankments, and enabling fishing ditches in the polder ponds to be adjacent to the beach face, so as to form large-water-surface, shallow-water-layer and seasonal-beach-exposed polder ponds; culturing aquatic products in the fishing ditches, and planting emerging plants on the beach face or not; determining water storage progress of the polder ponds according to production rhythms of the aquatic products cultured in the fishing ditches and growth rhythms of the emerging plants when the emerging plants are planted in the beach face; and timelyadjusting structures of the polder ponds when the salt content of soil of the coastal tidal-flat area steps down, and then, continuing to execute culturing / planting, so as to continuously lower the salt content of the soil of the coastal tidal-flat area. The method disclosed by the invention can exert an ecological protecting action, can also rapidly improve the soil and achieves relatively higheconomic benefit.

Description

technical field [0001] The invention relates to a coastal tidal flat ecological protection method and a used system, which belong to the technical field of environmental protection. Background technique [0002] Coastal tidal flats refer to the special areas below the high tide line and above the low tide line during spring tide, which are both sea and land. my country's existing 2.6 million hectares of coastal tidal flats are important reserve land resources, which grow at a rate of 26,700 to 33,300 hectares per year; they are mainly distributed in Jiangsu, Liaoning, Shandong and Zhejiang provinces. [0003] For a long time, coastal tidal flats have been developed and utilized as economic resources, but the one-sided pursuit of economic benefits will easily lead to the destruction of the ecological environment of coastal tidal flats, and it is difficult to form sustainable scientific development and utilization. At present, the idea of ​​development and utilization of coas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K63/00A01K61/10A01K61/59A01G22/00A01G22/22A01G22/40A01G22/25A01G22/20E03F3/04E03B3/04
CPCA01K63/003A01K61/10A01K61/59A01G22/00A01G22/22A01G22/40A01G22/25A01G22/20E03F3/046E03B3/04A01K63/04Y02A10/11E02B3/16E02B3/02E02B3/041A01B79/02E02B3/10A01C21/00A01D44/00
Inventor 韩士群严少华周庆徐文杰李国峰
Owner JIANGSU ACAD OF AGRI SCI
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