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Method for improving coast salty soil by utilizing cotton straw

A technology for cotton stalks and saline soil, which is applied in fields such as land preparation methods, horticultural methods, and botanical equipment and methods, can solve problems such as expensive costs, and achieve the effects of simple operation, reduction of secondary pollution, and improvement of bulk density.

Inactive Publication Date: 2010-10-06
SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the coastal saline-alkali land greening technology, especially for the improvement of saline soil, it is necessary to invest expensive expenses.

Method used

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  • Method for improving coast salty soil by utilizing cotton straw
  • Method for improving coast salty soil by utilizing cotton straw
  • Method for improving coast salty soil by utilizing cotton straw

Examples

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Embodiment 1

[0026] 1. At the beginning of April 2003, draw out a uniform plot with a length of 20 meters and a width of 15 meters on the coastal saline-alkali land to remove weeds;

[0027] 2. Use manual excavation to excavate the saline-alkali soil vertically downward to determine the height of the groundwater level;

[0028] 3. Manually remove the saline soil that is 20 centimeters above the groundwater level; if the groundwater level is -90 centimeters, excavate a 70 centimeter thick saline soil layer;

[0029] 4. Directly use the cut cotton stalks, arrange them in the east-west direction according to a certain density, the thickness is 10 cm, and the total weight per square meter is about 30 kg, and then cover with gravel with a grain diameter of 1-2 cm, and the thickness is 10 cm. 5 cm. Then add straw with a thickness of 10 cm according to a certain density in the north-south direction, and then cover with 5 cm of gravel with a grain diameter of 1-2 cm. Use heavy objects to tamp th...

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Abstract

The invention relates to a method for improving coast salty soil by utilizing cotton straw, belonging to the soil improvement technical field. The invention is characterized in that: soil block to be improved is divided on coast salty soil; salty soil more than 20cm higher than ground water level is removed; cotton straws doped with straws are arranged in sequence, flatted and tied up into straw layers with the thickness of 10cm; the straw layers are spread and covered on the salty soil in the same direction and in parallel, broken stones with the grain diameter of 1-2cm are uniformly and additionally covered on the straw layer, the thickness thereof is 5cm, thus forming an isolating layer; so that two isolating layer are formed; and punning is carried out. Ambient salty soil is uniformly covered on the isolating layer; salt tolerant plants are planted in the saline soil; and straw with the thickness of 3cm is covered on the saline soil. By implementing the invention, soil salt content is obviously reduced; and soil organic matter is improved. Isolating effect is obvious, the cotton straw is isolated and also adds soil nutrient, thus being beneficial to plant growth. Operation is simple and convenient, cost is low, and the method can be popularized and applied in large scale; and the cotton straw is recycled.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and specifically relates to a method for improving saline soil. Background technique [0002] Coastal flats belong to the coastal junction zone, which is the zone where the ocean and land interact. In ecology, it belongs to the category of ecological environment transition zone, that is, in the ecosystem, there are two or more material systems, energy systems, structural systems, and functional systems. The "interface" formed between them, and the space domain of the "transition zone" extending outward around the interface. The "ecological environment transition zone" is closely related to the "ecological environment fragile zone", and its ecosystem has the characteristics of instability, strong sensitivity and easy degradation. Due to the double influence of ocean tide and seawater-type groundwater, coastal beach soil has the characteristics of high salinity and low nutrient content. ...

Claims

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Application Information

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IPC IPC(8): A01B79/00A01G7/00
Inventor 崔心红黄一青鞠云福张群毕华松朱义
Owner SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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