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Method for ecological re-greening of coastal saline-alkaline sand by using salt-tolerant plants

A technology for saline-alkali and sandy land, which is applied in the field of ecological restoration of coastal saline-alkali sandy land, can solve problems such as difficult planting, lack of water resources, and soil desertification, so as to block salt spray and strong wind hazards, improve physical and chemical properties, Full-bodied effect

Active Publication Date: 2019-05-17
厦门万银环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The difficulty of coastal saline-alkali sandy land ecosystems is that these areas generally have the problem of water shortage and soil desertification in areas of strong salt spray.

Method used

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  • Method for ecological re-greening of coastal saline-alkaline sand by using salt-tolerant plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]The program will be implemented in green spaces on both sides of the temporary road at Xiamen Dadeng Island New Airport. The site is artificially dredged seashore sandy land used as a reserve land for the future airport. The soil has a high salinity, with a salt content of 0.5-0.9%. The site is in a secondary salt spray zone. The water supply of the island is difficult, and tree planting is not easy. survive. During implementation, the construction waste or brick slag should be rammed with a hook machine and evenly spread on the bottom of the soil, and then a layer of coarse sea sand 1 with a thickness of 10cm should be spread to form a saline-alkali isolation zone; layer of non-woven fabric to form a salt reverse osmosis layer 2, and then fine sea sand, garden solid waste fermented crushed material, organic fertilizer, farmland drought-resistant water-retaining agent and red loam according to 38.5%, 15%, 16%, 0.5%, 30% The % mass ratio is mixed and stirred evenly, and ...

Embodiment 2

[0036] The program will be implemented in green spaces on both sides of the temporary road at Xiamen Dadeng Island New Airport. The site is artificially dredged seashore sandy land used as a reserve land for the future airport. The soil has a high salinity, with a salt content of 0.5-0.9%. The site is in a secondary salt spray zone. The water supply of the island is difficult, and tree planting is not easy. survive. During implementation, the construction waste or brick slag should be rammed with a hook machine and evenly spread on the bottom of the soil, and then a layer of coarse sea sand 1 with a thickness of 12cm should be spread to form a saline-alkali isolation zone; layer of non-woven fabric to form a salt reverse osmosis layer 2, and then fine sea sand, garden solid waste fermented crushed material, organic fertilizer, farmland drought-resistant water-retaining agent and red loam according to 38.5%, 15%, 16%, 0.5%, 30% The % mass ratio is mixed and stirred evenly, and...

Embodiment 3

[0039] The program will be implemented in green spaces on both sides of the temporary road at Xiamen Dadeng Island New Airport. The site is artificially dredged seashore sandy land used as a reserve land for the future airport. The soil has a high salinity, with a salt content of 0.5-0.9%. The site is in a secondary salt spray zone. The water supply of the island is difficult, and tree planting is not easy. survive. During implementation, the construction waste or brick slag should be rammed with a hook machine and evenly spread on the bottom of the soil, and then a layer of coarse sea sand 1 with a thickness of 13cm should be spread to form a saline-alkali isolation zone; layer of non-woven fabric to form a salt reverse osmosis layer 2, and then fine sea sand, garden solid waste fermented crushed material, organic fertilizer, farmland drought-resistant water-retaining agent and red loam according to 38.5%, 15%, 16%, 0.5%, 30% The % mass ratio is mixed and stirred evenly, and...

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Abstract

The invention relates to the field of improvement technologies and ecological remediation of saline-alkaline land, in particular to a method for ecological re-greening of coastal saline-alkaline sandby using salt-tolerant plants. A saline-alkaline isolation layer consists of broken brick residues or miscellaneous fill and coarse sea sand, loose large-porous structures formed by the miscellaneousfill and the broken brick residues in constructional engineering can effectively block salt in lower layers from returning to the surface layer of soil along with water under the capillarity action, infiltration discharge of salt on the upper layer can be dredged, construction waste can be used, and the construction cost can be saved; a salt reverse osmosis layer can effectively block root systemsof the plants from penetrating the isolation layer, prevent the root systems from being affected by salt damage and prevent reverse osmosis of salt of the isolation layer; the arrangement principle of a saline-alkaline sand improvement layer lies in that physical and chemical properties of the saline-alkaline sand are improved, and effects of soil looseness and breathability, water retention, sufficient fertility and proper pH can be realized by cooperation with mushroom soil. The technical scheme has active and significant effects on ecological re-greening of the coastal saline-alkaline sandand is suitable for promotion on a large scale.

Description

technical field [0001] The invention relates to the field of saline-alkali land improvement technology and ecological restoration, in particular to a method for ecological restoration of seaside saline-alkaline sandy land by using salt-tolerant plants. Background technique [0002] Soil salinization has become one of the most important environmental problems in the world. According to incomplete statistics from UNESCO and FAO, the global saline-alkali land area is about 950 million hm 2 , accounting for 25% of the land area, my country's saline-alkali land area is about 99.13 million hm2, accounting for about 1 / 28 of the world's saline-alkali land, and the area is equivalent to 1 / 4 of my country's existing cultivated land. Soil desertification, barrenness, high salinity, and poor soil water and fertilizer retention capacity are common in coastal saline-alkaline sandy land. The entire coastal saline-alkaline sandy land is ecologically sensitive and fragile, and it is difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G2/10A01G17/00A01G22/60A01G24/12A01G25/02C05F15/00C05F17/00C05G3/04C05G3/80
CPCY02A40/22Y02W30/40Y02P60/40
Inventor 詹福麟
Owner 厦门万银环境科技有限公司
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