Method for treating saline-alkali soil through dialysis type high platform ladder grading groove ridge

A saline-alkali land and high platform technology, which is applied in the field of saline-alkali land management, can solve the problems of short duration of improvement effect and soil compaction, so as to improve the soil structure and rhizosphere microbial environment, control the change and accumulation of salinity, and promote the survival and growth of crops Effect

Active Publication Date: 2014-08-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problem that the existing method of using irrigation and drainage system to control saline-alkali land is likely to cause soil compaction and the improvement effect of the method of using chemical methods to improve saline-alkali land is short in duration, and provides a dialysis-type high-level ladder-graded ditch for saline-alkali land treatment Methods

Method used

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  • Method for treating saline-alkali soil through dialysis type high platform ladder grading groove ridge
  • Method for treating saline-alkali soil through dialysis type high platform ladder grading groove ridge
  • Method for treating saline-alkali soil through dialysis type high platform ladder grading groove ridge

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specific Embodiment approach 1

[0026] Specific implementation mode one: a kind of method of dialysis-type high-level step-grading ditch of the present embodiment to control saline-alkali land is carried out according to the following steps:

[0027] 1. Build a dialysis-type high-level stepped and graded ditch system on saline-alkali land. The dialysis-type high-step and graded ditch system includes drainage main ditch 1, secondary dry ditch 2, hair ditch 3, one-way infiltration neutralization well 4, and two-way infiltration Zhonghe well 5 and slope protection belt 6, drainage main ditch 1, secondary trunk ditch 2, and Mao ditch 3 form a regular square grid system. The distance between the main ditches 1 is 400m-500m, the depth of the main drainage ditch 1 is 1.5-1.8m, and the bottom width is 0.8-2.0m; And the distance between the parallel sub-drains 2 is 80-100m, the depth of the sub-drains 2 is 1.0-1.5m, and the bottom width of the sub-ditches 2 is 0.8-1.2m; A slope protection belt 6 with a width of 0.3m...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the saline-alkali plant in step 2 is Elymus, reed, rice, corn or cotton. Others are the same as in the first embodiment.

[0036] This implementation mode is different according to different regions, corn can be planted in the north, and cotton can be planted in the coast.

specific Embodiment approach 3

[0037] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, cofferdams are set along the edges of the furrows 3 in the square grid formed by the furrows 3 . Others are the same as in the first or second embodiment.

[0038] The cofferdam of this embodiment is built from corrosion-resistant materials, and the corrosion-resistant material is concrete slab or stone; The cofferdam is opened by a simple method to ensure the needs of watering and maintenance of crops in the seedling raising period, irrigation in the field soaking period, and moisture conservation.

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Abstract

The invention relates to a method for treating saline-alkali soil, in particular to a method for treating saline-alkali soil through a dialysis type high platform ladder grading groove ridge. The method aims at resolving the technical problem that soil hardening is easily caused in the existing method for treating saline-alkali soil by utilizing an irrigation and drainage system, and the improvement effect is short in time duration in the chemical method for treating saline-alkali soil. The method includes building a dialysis type high platform ladder grading groove ridge system on the saline-alkali soil which comprises a drainage main groove, secondary dry grooves, fur grooves, a one-way infiltration neutralization well, a two-way infiltration neutralization well and a slope protection belt, enabling the drainage main groove, the secondary dry grooves, the fur grooves to form a gridding system with the middle high and the periphery reduced in the ladder shape, setting the one-way infiltration neutralization well in the secondary dry groove, setting the two-way infiltration neutralization well at the position of an intersection opening of the two secondary dry grooves and conducting crop shifting agriculture on saline-alkali soil parcel defined by the fur grooves to finish treatment of saline-alkali soil. By means of the method for treating saline-alkali soil, alkalinity is reduced by 60% and salinity is reduced by 70% after 1 year to 2 years.

Description

technical field [0001] The invention relates to a method for controlling saline-alkali land. Background technique [0002] Soil salinization is mainly caused by its own geographical structure and climatic conditions. Human factors such as oil exploitation and overgrazing will make the land bare and aggravate the existing patch concentration of saline-alkali land and spread further. The degree of salinization has strong seasonal fluctuations, and is dominated by groundwater level changes and oilfield reinjection water. The formation mechanism of saline-alkali land is relatively complex. Traditional management methods, such as water conservancy projects, agricultural technology, physical, chemical, biological and other saline-alkali land improvement technologies and measures have different effects, and have also achieved good results in previous governance. The method of using the irrigation and drainage system to control saline-alkali land is to store light and pressurized s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B77/00
Inventor 薛滨夏魏利赵志庆李同予李春颖康晓菲
Owner HARBIN INST OF TECH
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