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Method for building dry farmland by making ditch and filling sand on saline-alkali soil

A technology of saline-alkali land and furrows, applied in the field of saline-alkali land reconstruction, can solve the problems of short duration and high cost, achieve practical and effective cost, and solve the effect of high cost

Inactive Publication Date: 2011-05-25
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of high cost or short duration of existing saline-alkali land improvement methods, and provides a saline-alkali land improvement method with long duration and low cost that can be popularized and used on a large scale

Method used

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  • Method for building dry farmland by making ditch and filling sand on saline-alkali soil

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Experimental program
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Effect test

specific Embodiment approach 1

[0012] Specific implementation mode one, this implementation mode refers to figure 1 It is done by the following steps:

[0013] a. Ditching on saline-alkali land: Ditching on saline-alkali land, making the saline-alkali land into a farmland style with alternating ridges and ditches;

[0014] b. Filling sand to create dry fields: After ditching, add nearby sand dune soil as various saline-alkali buffers into the ditch (1), and the added sand (3) is lower than the top of the ridge (2) 1 -5 cm;

[0015] c, planting crops: dig pits or hug ditches to plant xerophyte crops (4) on the strips where the sand is added, and take away the crops together with the root stubble after harvesting the crops every year, and continue planting on the strips next year.

specific Embodiment approach 2

[0016] Specific embodiment two: compared with embodiment one, the feature is that the present embodiment makes furrow (1) deep and is 15-30 centimetre, wide is the ridge platform (2) of 40-70 centimetre, two adjacent ridge platforms ( 2) The distance between the center lines is 40-70 centimeters, and the height of the ridge platform (2) is 10-30 centimeters.

specific Embodiment approach 3

[0017] Specific Embodiment Three: Compared with Embodiment One, the feature is that the cross-section of the furrow (1) made by this embodiment is trapezoidal or triangular with a wide top and a narrow bottom, and the cross-section of the ridge platform (2) is a trapezoid with a narrow top and a wide bottom. or triangle.

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Abstract

The invention discloses a method for building a dry farmland by making a ditch and filling sand on saline-alkali soil, relating to a reformation method of saline-alkali soil. In the method, the technical problems of extra high cost or short effect lasting time of the existing reformation method of saline-alkali soil are solved, and the method comprises the following steps: making the saline-alkali soil to be improved into a farmland mode that a ridge is alternated with a ditch; after ditching, taking nearby dune soil as a salinity-alkalinity buffering agent, and adding the salinity-alkalinity buffering agent into the ridge ditch, wherein the plane of added sandy soil is 1-5cm lower than the top of a ridge platform; digging and ditching on a strip added with sandy soil to plant xerophyte crop; taking away the xerophyte crop and the root stubble thereof each year; and continuing to plant on the strip in the next year. The method can be used for converting waste saline-alkali soil into dry farming farmlands, and has the advantages of low reformation cost and long effect lasting time.

Description

technical field [0001] The invention relates to a method for transforming saline-alkali land. Background technique [0002] The Songnen Plain in Northeast my country covers an area of ​​more than 20 million hectares. Saline-alkali land is common. The high salt content in the soil restricts crop production. Some areas do not even grow grass and become saline-alkali bare land. However, the climate in this area (precipitation and the accumulated temperature in the growing season) are suitable for the growth of dry crops such as corn and sunflower. At the same time, the Horqin sand belt in this area is vertical and horizontal, forming a spatial pattern of mosaic distribution with saline-alkali land. Making full use of sand resources to transform saline-alkali land has unique natural advantages in this area. In today's society where the area of ​​cultivated land is decreasing year by year, expanding farmland space is one of the basic ways to ensure my country's grain production. ...

Claims

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Application Information

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IPC IPC(8): A01B79/02
Inventor 周道玮王敏玲王颖
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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