Coastal saline-alkali soil improving method

A saline-alkali soil improvement and saline-alkali land technology, applied in the direction of soil preparation methods, applications, agricultural machinery and tools, etc., can solve the problems of poor improvement effect, achieve the effect of improving fertility and avoiding soil return to salt

Inactive Publication Date: 2017-09-22
德润建安工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution is only suitable for mild saline-alkali land, and the improvement effect is relatively poor. After improvement, only some saline-alkali-tolerant plants can be planted

Method used

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  • Coastal saline-alkali soil improving method
  • Coastal saline-alkali soil improving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for improving coastal saline-alkali soil, comprising the following steps:

[0042] (1) Build drainage ditches: if figure 1 As shown, the drainage ditch 2 is excavated in saline-alkali land to establish a drainage system; the excavation depth of the drainage ditch 2 is 50cm;

[0043] (2) Plowing the soil: plowing the saline-alkali land; figure 1 Shown, the depth of plowed soil 1 is 20cm;

[0044](3) Rinse and salt discharge: first rinse the saline-alkali soil with a small amount of water, collect the rinse water, test the pH value, and then judge whether to use a weak acid solution according to the pH value; if necessary, rinse with a weak acid solution first , and then rinse with clear water; if not directly rinse with clear water; the weakly acidic solution is selected from one or more of carbonic acid solution, acetic acid solution, ammonia water, dilute hydrochloric acid, dilute sulfuric acid;

[0045] (4) Repeat step (3) to reduce the salinity to below 0...

Embodiment 2

[0053] A method for improving coastal saline-alkali soil, comprising the following steps:

[0054] (1) Build drainage ditches: if figure 1 As shown, the drainage ditch 2 is excavated in the saline-alkali land to establish a drainage system; the excavation depth of the drainage ditch 2 is 60cm;

[0055] (2) Plowing the soil: plowing the saline-alkali land; figure 1 Shown, the depth of plowed soil 1 is 30cm;

[0056] (3) Rinse and salt discharge: first rinse the saline-alkali soil with a small amount of water, collect the rinse water, test the pH value, and then judge whether to use a weak acid solution according to the pH value; if necessary, rinse with a weak acid solution first , and then rinse with clear water; if not directly rinse with clear water; the weakly acidic solution is selected from one or more of carbonic acid solution, acetic acid solution, ammonia water, dilute hydrochloric acid, dilute sulfuric acid;

[0057] (4) Repeat step (3) to reduce the salinity to be...

Embodiment 3

[0065] A method for improving coastal saline-alkali soil, comprising the following steps:

[0066] (1) Build drainage ditches: if figure 1 As shown, the drainage ditch 2 is excavated in the saline-alkali land to establish a drainage system; the excavation depth of the drainage ditch 2 is 80cm;

[0067] (2) Plowing the soil: plowing the saline-alkali land; figure 1 Shown, the depth of plowed soil 1 is 35cm;

[0068] (3) Rinse and salt discharge: first rinse the saline-alkali soil with a small amount of water, collect the rinse water, test the pH value, and then judge whether to use a weak acid solution according to the pH value; if necessary, rinse with a weak acid solution first , and then rinse with clear water; if not directly rinse with clear water; the weakly acidic solution is selected from one or more of carbonic acid solution, acetic acid solution, ammonia water, dilute hydrochloric acid, dilute sulfuric acid;

[0069] (4) Repeat step (3) to reduce the salinity to be...

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Abstract

The invention relates to a coastal saline-alkali soil improving method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps that 1, a drainage ditch is built; 2, soil tillage is conducted; 3, drip washing and salt elimination are conducted; 4, the third step is repeated until the salinity and alkalinity are lowered to the specialized range; 5, resin is poured into saline-alkali soil to form a salt prevention layer; 6, the bottom of the drainage ditch is filled with filling materials; 7, soil conditioner and organic fertilizer are applied to the soil. According to the coastal saline-alkali soil improving method, firstly a drainage system is built, soil tillage is conducted, then the tilled soil is subjected to drip washing, after drip washing is conducted repeatedly, the salinity and alkalinity of the soil are lowered quickly, and the method accords with the growth of general plants; due to the fact that fertilizer in the soil is also taken away at the same time of drip washing, the soil is poorer and easier to harden, and therefore, complex fertilizer operation such as application of biological fertilizer is also conducted after drip washing on the soil, so that the fertility of the soil is improved quickly, and the method is suitable for the growth of plants.

Description

technical field [0001] The invention relates to a method for improving coastal saline-alkali land, and belongs to the technical field of saline-alkali soil improvement. Background technique [0002] Soil salinization is the main obstacle restricting the optimal use of land resources in coastal areas. With the rapid development of economy and urbanization in coastal areas, the area of ​​agricultural and forestry land has been continuously reduced, and the improvement and utilization of saline-alkali land has long been put on the scientific research agenda. The research found that the surface accumulation of salt in the coastal saline-alkali land is serious and the overall salt content is high, and the soil is alkaline. The main salts in the soil are sodium chloride and calcium chloride, while the salts in the surface soil are mainly chlorides and sulfates. In the 0-40 cm deep soil layer Na + , Cl - , S0 4 2- as the main salt segregation. According to the amount of salt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 杨妃妃朱建德肖建茜侯昌国
Owner 德润建安工程集团有限公司
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