Saline land improvement system and improvement method

Abstract

The invention discloses a saline land improvement system and an improvement method at the aim of solving the problems that water and fertilizers can be lost in the later improvement period and the improvement of deep saline land is not facilitated because of a conventional saline land improvement system. The saline land improvement system comprises a plurality of first salt discharge tubes and a second salt discharge tube, wherein the first salt discharge tubes are used for receiving saline water from the saline land; the second salt discharge tube is connected with the first salt discharge tubes and used for discharging the saline water; the second salt discharge tube is provided with a valve. The saline land improvement system and the improvement method disclosed by the invention have the advantages that the structure is simple, the saline land improvement effect can be rapidly taken into play, the effect is good.

Description

technical field [0001] The invention relates to a saline-alkali land improvement system and an improvement method. Background technique [0002] Saline-alkali soils are those soils that are high in salt, usually with a pH greater than 9, making it difficult to grow plants, especially crops. According to the amount of salt and alkali contained, it can be further divided into mild (0.1%-0.25%), moderate (0.25%-0.5%), and severe saline-alkali land (0.5%-0.6%). [0003] The existing improvement system for saline-alkali land includes a first row of salt pipes and a second row of salt pipes connected to the first row of salt pipes. The first row of salt pipes is provided with water inlet holes or water inlet grooves. The water inlet holes or water inlet grooves are used to receive saline-alkali water in the soil. The salt pipe discharges the saline water. Dissolve various acidic or alkaline substances in the saline-alkali soil by water flow, so as to achieve the purpose of chan...

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Problems solved by technology

[0004] Question 1: Usually the above-mentioned pipelines are laid in the soil, which is inconvenient and will not be removed

When the pH of the soil has reached the standard and the first row of salt pipes and the second row of salt pipes are not blocked, they will continue to receive the water flow in the soil, and the fertilizer in the soil will be entrained in the water flow, resulting in After the soil is improved and reaches the standard, the loss of water and fertilizer will cause a lot of waste

[0005] Problem 2: Due to the existence of pipelines in the improvement area, most of the water and fertilizer are drained away instead of infiltrating into the deeper layers of the land, so the soil layer below the pipeline cannot be washed with enough fresh water, and the high salinity will be maintained for a long time As a result, the saline-alkali land can only improve the soil layer above the pipeline, so the improvement effect is poor;

[0006] Problem 3: The improved area will also cause the soil below the pipeline to have a high salinity-alkali content, and the roots of plants planted in this area cannot continue to extend downward, resulting in the death of the root system when the root system of the plant continues to extend downward, which again leads to affected the effect of the improvement

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