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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 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: 2021-02-09
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 for improving coastal heavy saline-alkali land:

[0054] A. Autumn land leveling and finishing: On October 5th, the land was sorted and leveled, mainly for land leveling and setting of fields. The furrows and ridges with a width of 30 cm are separated.

[0055] B. Plastic film covering in autumn: After the land is leveled, cover the set fields 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 less than 0.4%, and the soil moisture content was kept at about 25%. The surface film was cleaned and destroyed in a centralized manner. Then fertilize, apply 4m 3 / mu of cow dung, after fertilization, carry out rotary tillage, and the depth of rotary tillage is 15cm.

[0057] D. Sowing of crops: After fertilizing and rotary tilling the land, use a mechanical compactor to perform a few times of suppression, spray herbicides, and use a sowing and filming m...

Embodiment 2

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

[0062] A. On October 2, the land was sorted and leveled, mainly the land was leveled and the fields were set up. The length and width of each field was 10×20m, and the fields were separated by ridges about 30cm high and 30cm wide .

[0063] B. Plastic film covering in autumn: After the land is leveled, cover the set fields with plastic film in time.

[0064] C. Prune Tamarix and Lycium barbarum on February 20 of the following year. The shoots are about 10 cm long. For the convenience of cutting, the bottom of the branches is cut obliquely and pointed. After pruning, tie every 50 branches into a bunch, bury them in a moist sand pit, and germinate them for cutting use.

[0065] D. On March 18, the surface plastic film was cleaned and destroyed in a centralized manner. At this time, fertilization was carried out, and 3m 3 / mu of cow dung, after fertilization, the land should be rotary tilled to a depth of 18cm,...

Embodiment 3

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

[0071] A. On October 7, the land was sorted and leveled, mainly the land was leveled and the fields were set up. The length and width of each field was 10×20m, and the fields were separated by ridges about 30cm high and 30cm wide .

[0072] B. After the land is leveled, cover the set fields with plastic film in time.

[0073] C. On March 15th, the surface plastic film was cleaned and destroyed in a centralized manner. At this time, fertilization was carried out, and 5m 3 / mu of cow dung, after fertilization, the land should be rotated to a depth of 20cm, and then the soil should be mechanically compacted and covered with mechanical film.

[0074] D. On March 18, the branches of Tamarix or Lycium barbarum were pruned to a length of 15 cm, and the branches of Tamarix or Lycium barbarum were raised in pots.

[0075] E. On April 22, new shoots and new roots grew out of the seedling pot seedlings, and the seedlin...

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Abstract

The invention provides a method for improving coastal heavy saline-alkali land. The method for improving coastal heavy saline-alkali land by mulching film in autumn provided by the present invention is based on the dynamic change law of regional soil water and salt, making full use of the condition of rainwater and salt in summer, and maintaining a lower soil salinity level through film mulching measures after the autumn rainy season. Provides conditions for plants to safely pass through the salt-sensitive period. The invention is simple in operation and low in cost, fully utilizes the local monsoon climate characteristics and soil water-salt migration law, is a saline-alkali land method with regional characteristics, and also provides technical support for agricultural production and vegetation construction in the heavy saline-alkali land in this area, and has remarkable Its economic, social and ecological benefits have broad application prospects in the heavy saline-alkali areas 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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