Method for rapidly desalinizing coast saline-alkali soil plough layer and application thereof

A technology for saline-alkali land and ploughing layer, which is applied in the field of rapid desalination using fresh water in the ploughing layer of coastal saline-alkali land and the field of rapid desalination in the ploughing layer of coastal saline-alkali land, which can solve the problems of slow desalination and poor utilization of saline-alkali land, and achieve Efficient salt removal, low cost and remarkable salt removal effect

Inactive Publication Date: 2017-07-07
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is also to solve the problem of slow desalination speed and poor utilization of saline-alkali soil, mainly using

Method used

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  • Method for rapidly desalinizing coast saline-alkali soil plough layer and application thereof
  • Method for rapidly desalinizing coast saline-alkali soil plough layer and application thereof
  • Method for rapidly desalinizing coast saline-alkali soil plough layer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Select saline-alkali areas rich in fresh water resources.

[0036] 2. Establish a standardized field that facilitates unified mechanized operations, such as figure 1 Shown:

[0037] (1) Construct the water intake channel with a width of 0.4 to 0.6 meters and a depth of 0.4 to 0.6 meters. The water intake channel is hardened and the bottom of the channel is not lower than the basic level of the field to facilitate water intake operations; figure 2 Schematic diagram of the cross-section of the canal and culvert.

[0038] (2) Build a drainage channel, the distance between the drainage channel and the intake channel is 50-200 meters, the drainage channel can be hardened, the surface width of the channel is 2 meters, the bottom width of the channel is 1 meter, and the channel depth is 1 to 1.5 meters; image 3 Schematic diagram of the cross-section of the drainage channel and drainage culvert.

[0039] (3) The basic field is formed, and a field ridge is built horizont...

Embodiment 2

[0050] A 100-acre coastal salt land improvement project in a place along the eastern coast.

[0051] The 100 mu of coastal salt land of the project is tidal flat reclamation land, with a length of about 310 meters from north to south and a width of about 210 meters from east to west. The land is relatively flat. Due to the high salinity (average salt content of 0-20 cm is 0.89%), the vegetation is very sparse and monotonous, and only a small amount of Suaeda salsa grows. Ten meters away on the west side of the land, there is a freshwater river with good water quality and a salt content of less than 0.1%. The water level is low, about 1 meter below the level of the field.

[0052] Soil roads with a width of about 4 meters were built on the north and south sides of the coastal salt land to facilitate the entry and exit of agricultural machinery. Two canals are built on the outside of the road as the main canals for water intake and drainage. The main water intake canal and th...

Embodiment 3

[0059] 1. Select saline-alkali areas rich in fresh water resources.

[0060] 2. Establish a standardized field that is convenient for mechanized unified operation:

[0061] (1) Construct the water intake channel with a width of 0.5 meters and a depth of 0.5 meters. The water intake channel is hardened and the bottom of the channel is not lower than the basic level of the field, which is convenient for water intake operations.

[0062] (2) Build a drainage channel, the distance between the drainage channel and the intake channel is 100 meters, the drainage channel can be hardened, the surface width of the channel is 2 meters, the bottom width of the channel is 1 meter, and the channel depth is 1.2 meters.

[0063] (3) Basic field plots are formed, and a field ridge is built horizontally every 100 meters between the water inlet channel and the drainage channel. The field ridge is 0.4 meters high and 0.5 meters wide, forming a basic field plot with a length of 100 meters and a wi...

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Abstract

The invention relates to a method for rapidly desalinizing a coast saline-alkali soil plough layer. The method comprises the steps of 1 flattening the land and constructing standardized field blocks with the width of 50-200 meters and the length of 50-200 meters, and distributing an intake channel and a drainage channel at two sides of each field block, flatness of the field blocks being required to be +/-5cm; 2 selecting an appropriate plowing machinery and a plowing method to perform plowing operation; 3 spending proper time after the plowing operation is performed to sun the upterned soil by solar radiation; 4 controlling water intake quantity of the field blocks to be in an appropriate range higher than the field blocks by 0.1-0.2 meters; 5 soaking the soil after water intake and performing rotary tillage operation by utilization of an agricultural rotary cultivator with water; and 6 controlling duration of slurry settlement time after the water rotary tillage is performed. By utilization by strong dissolvability and high solubility of water to salt, the salt of the saline-alkali soil plough layer can be rapidly discharged from the soil, and the salt content of the saline-alkali soil plough layer can be reduced to a required range in a short time, thereby facilitating subsequent farm work. Land and fresh water resources can be utilized efficiently, and arable areas can be largely increased.

Description

technical field [0001] The invention relates to a method and application of rapid desalination of cultivated layers of coastal saline-alkali land, in particular to a method for rapid desalination of cultivated layers of coastal saline-alkali land by using fresh water, and belongs to the technical field of saline-alkali land improvement. Background technique [0002] The area of ​​saline-alkali land in my country is widely distributed, and the degree of salinization is generally high, and the area of ​​saline-alkali land is increasing year by year. Especially in the eastern coastal area, with the continuous advancement of coastal development, there will be more tidal flat land to be developed urgently. For example, according to the strategic plan for coastal tidal flat development in Jiangsu, by 2020, it is estimated that 180,000 hectares of tidal flats will be reclaimed, of which 60% are planned to be used for agriculture. Agricultural Production. However, land salinizatio...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02A01B79/005
Inventor 徐照龙茆训东彭陈陆海鹰邵宏波张大勇
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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