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Method for improving coastal heavy saline-alkali soil

A saline-alkali land and coastal technology, applied in the fields of soil preparation methods, applications, agricultural machinery and tools, etc., can solve the problems of poor improvement effect, high improvement cost, complicated operation, etc., and achieve the effect of improving the ecological environment, low cost, and simple operation

Active Publication Date: 2018-11-16
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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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 improvement cost, poor in improvement effect and easy to repeat, 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

[0053] A method of improving coastal heavy saline-alkali land:

[0054] A. Land leveling and consolidation in autumn: On October 5th, the land will be consolidated and leveled. The land will be leveled and field settings. The length and width of each field is 10×20m, and the height between the fields is about 30cm. Separate by 30cm wide ridges.

[0055] B. Plastic film coverage in autumn: After the land is leveled, the set fields shall be fully covered with plastic film in time.

[0056] C. Land fertilization and rotary tillage: On April 26, at this time, the salt content of the surface (0-20cm) soil was reduced to below 0.4%, and the soil water content was maintained at about 25%. The surface mulch was cleaned and destroyed. Then fertilize, apply 4m 3 / Mu of cow dung, after fertilization, the land is rotated and the depth is 15cm.

[0057] D. Crop seeding: After the land is fertilized and rotary tilled, use a mechanical suppressor to perform several suppressions, spray herbicides, a...

Embodiment 2

[0061] A method of improving coastal heavy saline-alkali land:

[0062] A. On October 2, the land was reorganized and leveled. The land was leveled and field plots were set up. The length and width of each plot was 10×20m, and the plots were separated by border ridges with a height of about 30cm and a width of 30cm. .

[0063] B. Plastic film coverage in autumn: After the land is leveled, the set fields shall be fully covered with plastic film in time.

[0064] C. Prune the tamarisk and wolfberry branches on February 20 of the following year. The shoots are about 10cm long. For the convenience of cutting, the bottom ends of the branches are cut diagonally. After the pruning, every 50 branches are tied into a handful and buried in a moist sand pit for accelerating germination in preparation for cuttings.

[0065] D. On March 18, clean up the ground film and destroy it intensively. At this time, fertilize and apply 3m 3 / Mu of cow dung, land rotary tillage after fertilization, the rota...

Embodiment 3

[0070] A method of improving coastal heavy saline-alkali land:

[0071] A. On October 7, the land was consolidated and flattened. The land was leveled and field plots were set up. Each plot was 10×20m long and wide, and the plots were separated by ridges with a height of about 30cm and a width of 30cm. .

[0072] B. After the land is leveled, complete the mulching film on the set fields in time.

[0073] C. On March 15th, clean up the ground film and destroy it intensively. At this time, fertilize and apply 5m 3 / Mu of cow dung, land rotary tillage after fertilization, the rotary tillage depth is 20cm, and then the soil is mechanically compacted and covered with mechanical plastic film.

[0074] D. On March 18, pruning the tamarisk or the wolfberry branches with a length of 15 cm, and raising the tamarisk branches or wolfberry branches in a seedling bowl.

[0075] E. On April 22, new shoots and roots of the seedlings in the seedling pot were transplanted and planted on the membrane. Th...

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Abstract

The invention provides a method for improving coastal heavy saline-alkali soil. The method for improving coastal heavy saline-alkali soil by carrying out mulching film coverage in autumn is based on the soil water-salt dynamic change law in the area; the condition of leaching salt by summer rainwater is fully utilized, and a low salinity level is kept through the measurement of mulching film coverage after the rainy season in autumn, so that conditions are provided to plants for safely living through a saline-alkali sensitive period in the next spring. The method provided by the invention is simple in operation and low in cost, the local monsoon climate characteristics and the soil water-salt transport law are fully utilized, and the method is a method with regional characteristics for improving the saline-alkali soil. Meanwhile, the method provides technical supports for agricultural production and vegetation construction in the heavy saline-alkali soil in the area, has remarkable economic, social and ecological benefits, and has a broad application prospect in heavy saline-alkali soil in Circum-Bohai Sea areas.

Description

Technical field [0001] The invention relates to the technical field of land improvement, in particular to a method for improving coastal heavy saline-alkali land. Background technique [0002] The low plain area around the Bohai Sea has sufficient light and heat conditions and superior geographical location. It is an important production base for grain, economic and forage 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 area has shallow groundwater depth and high salinity, soil salinization is extremely serious, vegetation and crops are difficult to grow, resulting in low agricultural production levels in the area and harsh ecological environment, which has seriously affected the area The process of agricultural development and ecological environment construction. [0003] After long-term production practices, my country has accumulated rich experience in the transf...

Claims

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Application Information

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Patent Type & Authority Applications(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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