A method for improving coastal heavy saline-alkali land

A saline-alkali land, coastal technology, applied in land preparation methods, agriculture, applications, etc., can solve the problems of unstable improvement effect, high improvement cost, and complicated operation.

Active Publication Date: 2021-05-11
中国科学院遗传与发育生物学研究所农业资源研究中心
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the existing methods for improving saline-alkali land are complex in operation, high in cost of improvement and unstable in improvement effect, and can only be improved by using fresh water resources, the present invention provides a method for improving coastal heavy saline-alkali land

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for improving coastal heavy saline-alkali land:

[0056] A. Land leveling and finishing: On February 15th, the frozen soil layer was completely thawed, and the land was sorted and leveled. It is separated by ridges with a height of 30 cm and a width of 30 cm.

[0057] B. Spring salt water irrigation: After the land is leveled, on February 18, the local underground salt water is drawn to irrigate the set fields. At this time, the salinity of the irrigation water is about 10g / L, and the irrigation water volume is 180mm. The irrigation method is flood irrigation.

[0058] C. Plastic film covering: After 7 days of salt water irrigation in spring, when the soil can be mechanically cultivated on the surface, the spring soil film covering is carried out, and the surface film is fully covered by a film covering machine. The film is ordinary polyethylene film, and the width of the film is 100cm. The film thickness is 0.008mm.

[0059] D. Land fertilization and rotary...

Embodiment 2

[0064] A method for improving coastal heavy saline-alkali land:

[0065] A. Land consolidation and leveling: On February 17, after the soil permafrost was completely thawed, the land was sorted out and levelled, mainly for land leveling and field setting. The length and width of each field was 10×20m, and the field They are separated by ridges with a height of 25 cm and a width of 25 cm.

[0066] B. Salt water irrigation in spring: On February 18, the local underground salt water was pumped to irrigate the set fields. Water floods.

[0067] C, land fertilization, rotary tillage and plastic film mulching: after about 7 days of salt water irrigation in spring, when the soil can be mechanically cultivated on the surface, soil fertilization is carried out, and 5m 3 / mu of cow dung, then carry out mechanical rotary tillage, the depth of rotary tillage is 15cm, and carry out mechanical compaction of the land, and then use the film covering machine to cover the land with plastic f...

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Abstract

The invention provides a method for improving coastal heavy saline-alkali land. The method of using high-concentration saline water irrigation in spring to improve coastal heavy saline-alkali land provided by the present invention makes full use of the rich underground salt water and regional climate characteristics of the heavy saline-alkali area around the Bohai Sea, and creates spring surface soil through spring salt water irrigation and plastic film covering measures. Compared with the traditional saline-alkali land improvement method, it has the characteristics of simple operation, remarkable effect, low cost, etc., and has superior economic indicators, and is suitable for agricultural production and greening of original vegetation in the heavy saline-alkaline area around the Bohai Sea.

Description

technical field [0001] The invention relates to the technical field of land improvement, in particular to a method for improving coastal heavily saline-alkali land. Background technique [0002] The low plain area around the Bohai Sea has sufficient light and heat conditions and a superior geographical location. It is an important production base of grain, economic and feed crops in my country, and it is also an area of ​​rapid economic development in China. However, affected by seawater erosion and monsoon climate characteristics, the groundwater in this area is shallow and highly salinized, and the salinization of the soil is extremely serious, making it difficult for vegetation and crops to grow, resulting in low levels of agricultural production and poor ecological environment in this area, seriously affecting the region. Agricultural development and ecological environment construction process. [0003] After long-term production practice, my country has accumulated ric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 郭凯刘小京孙宏勇巨兆强封晓辉
Owner 中国科学院遗传与发育生物学研究所农业资源研究中心
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