Open trench-concealed conduit combined water discharging and salt reducing method

A combined, hidden pipe technology, applied in the field of soil improvement in saline-alkali land, can solve the problems of insignificant soil salinity, unfavorable application and promotion, and high operating costs, so as to improve water storage capacity, enhance the ability to collect rainwater and irrigation water, improve The effect of hardening

CN106358479AInactive Publication Date: 2017-02-01SHANDONG SUNWAY LANDSCAPE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-02-01
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses an open trench-concealed conduit combined water discharging and salt reducing method, and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps of: selecting a field, digging a salt-controlling water discharging concealed conduit trench and a water collection conduit trench, laying a water-resisting layer, burying a salt-controlling water discharging concealed conduit and a water collection conduit, connecting the salt-controlling water discharging concealed conduit and the water collection conduit, backfilling the salt-controlling water discharging concealed conduit trench and the water collection conduit trench, reconditioning mounds, digging an open trench, perforating, applying soil fertility fertilizer, and managing the salt-controlling water discharging concealed conduit and the water collection conduit. By adopting the open trench-concealed conduit combined water discharging and salt reducing method, the water retention, fertility retention and temperature increase can be facilitated, the soluble salt ions can be rapidly leached below a plough layer, the salt ions leached to the soil deep layer are not moved to the surface soil along with the water, so that an effect of reducing the salt content in the surface soil can be realized; and by virtue of the method, the water drainage is facilitated, the leaching efficiency of the salt content in the plough layer is greatly increased, and the salt content in the soil is greatly reduced.
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Description

technical field

[0001] The invention relates to a method for draining and reducing salt by combining an open ditch and a hidden pipe, and belongs to the technical field of saline-alkali soil improvement. Background technique

[0002] China currently has 100 million hectares of saline-alkali land, most of which are distributed in arid and semi-arid regions such as North China, Northwest and Northeast China, mainly including Xinjiang, Qinghai, Gansu, Ningxia, Shaanxi, Inner Mongolia, and northeast Shanxi. Most of them belong to the Yellow River system, and the groundwater level is significantly affected by the Yellow River system. The groundwater level is high. The local drinking wells are generally around 20m, and the groundwater level is around 2m. The main soil types are saline soil and aeolian sand, which are developed on the parent material of aeolian sand. The juvenile soil contains a lot of soluble salts, the rainfall is low, the annual average is about 180mm, the light...

Examples

Embodiment Construction

[0032]In order to make the technical solutions of the present invention clearer and clearer to those skilled in the art, the present invention will be described in further detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0033] This embodiment provides a method for draining water and reducing salt by combining open ditch and concealed pipe, including the following steps:

[0034] Step 1: Site selection

[0035] Select plots with flat land, soil plow layer with a salt content of less than 2.1%, a pH value of 7.5 to 8.0, and an organic matter content of more than 1%, with neutral soil texture;

[0036] Step 2: Excavate salt-control drainage underground trenches and catchment trenches

[0037] Divide the plot into several grid-shaped saline-alkali plots, and excavate hidden pipe trenches at intervals of 15-20m in the grid-shaped saline-alkali plots, with a width of 1.5-2.0m and a depth of 1.5 ~ 1.8m, the...