Rapid construction method for salt-tolerant economical vegetation in muddy coastal severe saline-alkali land based on discharging salts by underground pipes

A technology of severe saline-alkali land and construction method, which is applied in the field of rapid construction of salt-tolerant economical vegetation in muddy coastal heavily saline-alkali land, which can solve the problems of destroying the ecological environment of the source soil area, unfavorable economic and social development, and high transportation costs

Pending Publication Date: 2018-04-10
COASTAL AGRI RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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Problems solved by technology

For example, the foreign soil method not only destroys the ecological environment of the source soil area, but also has high transportation costs; although a large number of amendme

Method used

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  • Rapid construction method for salt-tolerant economical vegetation in muddy coastal severe saline-alkali land based on discharging salts by underground pipes

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Embodiment

[0024] In 2017, in Xincheng, Caofeidian District, Tangshan City, Hebei Province (10km from the seaside), the construction of ecological and economical vegetation on muddy coastal heavy saline-alkali land was carried out, with a scale of 50 mu. Before the project area was treated, it was a seawater aquaculture pond, the soil salinity was 23-32‰, the soil was sticky, and the bulk density was 1.90-2.3g / cm 3 , the vegetation is dominated by Suaeda salsa, with a coverage rate of less than 3%. High soil salinity and poor soil quality are the main obstacles to the improvement of soil fertility and crop production in coastal muddy coastal saline soil. The main technical links are as follows:

[0025] (1) Land consolidation

[0026] From February to March 2017, land consolidation in the project area began. Fish ponds were excavated in the middle of the project area for drainage and breeding, and other fish ponds were filled with excavated earth to level the land.

[0027] (2) The se...

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Abstract

The invention discloses a rapid construction method for salt-tolerant economical vegetation in muddy coastal severe saline-alkali land based on discharging salts by underground pipes. The method comprises the following steps: flattening a land block, and arranging a work way every 40m; longitudinally spreading an underground pipe in the middle of each 40m land, and horizontally spreading underground pipes at a distance of 10m to communicate with the longitudinal underground pipes; spreading 5cm stone at the upper layer of the underground pipes, and spreading a non-woven fabric layer at the upper layer of the stone; applying corn stalks and other materials per mu, and performing mixing; and adopting a planting mode of a combination of ridge cultivation and drip irrigation, and open ditchesformed by ridging communicate with longitudinal open ditches located at the edges of the work ways and are used for surface layer water discharge and salt discharge. The method disclosed by the invention adopts the combination of the underground pipes and the open ditches to enhance the salt discharge, the combination of deep plowing and the stalks to enhance salt leaching, and the combination ofthe salt-tolerant plants and salt-reducing quality-improving materials to improve the survival rate, so that the soil viscosity is reduced, the soil salinity is reduced, and the soil quality is improved, thereby making the coastal alkali-salinity barren land can become an oasis harvesting park in a current year.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land treatment and utilization, in particular to a method for quickly constructing salt-tolerant economical vegetation in muddy coastal heavily saline-alkali land based on underground pipe salt drainage. Background technique [0002] The muddy coastal heavy saline-alkali wasteland is close to the sea, the groundwater table is shallow, and the soil is relatively saline-alkali. Generally, the total salt content of the soil is 2.0-3.0%, and the soil is viscous, with a bulk density of 1.9g / cm 3 Above, barren and desolate, mostly barren land, has seriously affected the improvement of coastal ecological environment and economic development, and has become an urgent technical problem to be solved in the development and utilization of tidal flats. So far, the measures taken by countries around the world mainly include engineering measures, chemical measures, and biological measures. Although enginee...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G22/00A01G22/60A01G22/05A01G22/10A01G22/25
CPCA01B79/02
Inventor 王秀萍张晓东薛志忠张国新鲁雪林刘雅辉王婷婷孙建平姚玉涛
Owner COASTAL AGRI RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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