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Halogenic soil planting technique

A saline soil and salinization technology, applied in the field of greening, can solve problems such as physical and chemical properties of harsh soils

Inactive Publication Date: 2009-08-05
上海市金山区园林管理署 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the harsh soil physical and chemical properties of coastal saline soil, mainly composed of high content of water-soluble salts, is an insurmountable obstacle for tree planting and greening

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Greening Experiment of Newly Reclamated Saline Soil in Shanghai Petrochemical Area

[0104] The tidal flat area reclaimed by Shanghai Petrochemical Plant along Hangzhou Bay is about 11 square kilometers. Before the reclamation, it was an estuary littoral facies sedimentary beach, with a relatively simple landform: high in the north and low in the south, with a gentle slope, slightly inclined to Hangzhou Bay. On the beach, there are harbours, beaches, and canals connected to the sea, and there is an intermittent shell embankment (locally called "sand hill") roughly parallel to the coastline, with the top of the embankment slightly higher than the beach surface. There are many salt fields and brine wells on the beach to the north of Shagang. The elevation of the beach is 3-5 meters (zero point of Wusongkou). The groundwater level is 0.5-0.7 meters below the natural ground, the highest is 0.3 meters, and the lowest is 1.5 meters. The groundwater is connected to the sea. ...

Embodiment 2

[0158] Project demonstration of land improvement and greening in Nanhui Forest Park

[0159] Nanhui Forest Park is located on the seashore of Nanhui, Shanghai. Most of the land is coastal saline soil reclaimed in 1994, and the salt content of the soil surface is as high as 12.1g / Kg. After digging ponds to raise fish and multiply plants from sedge communities to reed communities, the soil quickly transformed from coastal saline soil to coastal saline soil: the average water-soluble salt content in the 60-70cm soil layer is 2.2g / Kg, and the soil pH is ≥ 8.4. The soil organic matter content is about 1.13%.

[0160] The present inventor has used the research results of the Shanghai petrochemical area for reference, and carried out a greening test on coastal saline soil in Nanhui Forest Park.

[0161] 1. Dig the lake to pile up "mountains", separate irrigation and drainage

[0162] In order to drain the water and spray salt, and to optimize the landscape, the method of digging th...

Embodiment 3

[0177] Screening Test of Greening Plants in Coastal Saline Soil

[0178] In order to find and determine salt-tolerant plants suitable for saline soil afforestation in subtropical regions, the present invention has carried out a screening test of coastal saline soil afforestation plants on many plants.

[0179] (1) Test materials and methods

[0180] 1. Materials: 139 kinds of green plants (see Table 9)

[0181] Table 9

[0182] serial number Variety Latin serial number Variety Latin 1 Saltland Tamarix Tamarix Kazelinii Bunge.b 36 palm Trachycarpus fortunei (Hook. f.) H. Wendl. 2

Tamarix bristly

Tamarix hispida.

37

Acacia

Albizzia julibrissin Durazz. (A. mollis

Boir., Acacia julibrissin Willd.) 3 Tamarix long spikes Tamarix elongata. 38 Pittosporum Pittosporum tobira (Thunb.) Alt. 4 Tamarix multibranch Tamarix xamosissima Ledeb. 39 mulberry tree Broussonetia papyrifera (L.) L'Her.ex Vent. ...

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Abstract

A method for covering salinized soil with greenery includes such steps as correctly measuring the content of salt in the soil and its pH value, choosing the proper plants from 139 plants, and planting them is said salinized soil.

Description

technical field [0001] The invention relates to a greening technology, in particular to a coastal saline soil greening technology, and more specifically to a method for determining salt-tolerant plants suitable for planting in saline soil. Background technique [0002] my country has a very long coastline, along which there is a large amount of coastal saline soil. For example, Shanghai has a coastline of about 470 kilometers from Wusongkou to the mainland coastline of Hangzhou Bay and the three islands of Chongming, Changxing and Hengsha. Along the coastline, there are wide and narrow strips, with a total area of ​​about 630 square kilometers of coastal saline soil, accounting for more than 15% of the city's soil resources. Some soil resources are still expanding. Shanghai is a place where every inch of land is precious, and the land that can be used for greening is extremely limited. It is imperative to make full use of the unsuitable coastal saline soil for tree plantin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G7/00
CPCY02A40/10
Inventor 魏凤巢夏瑞妹沈哲东黄晓萍戚五妹周立钱军朱小毛
Owner 上海市金山区园林管理署
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