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

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...

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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 amendments can achieve better treatment and utilization effects, the cost is high, which is not conducive to economic and social development, and may cause Secondary pollution of the soil

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