The Method of Using Cotton Straw to Improve Coastal Saline Soil

A technology for cotton stalks and saline soil, which is applied in field preparation methods, horticultural methods, botanical equipment and methods, etc., can solve problems such as expensive costs, and achieve the effects of simple operation, obvious isolation effect, and reduced soil salinity.

Inactive Publication Date: 2011-12-28
SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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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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  • The Method of Using Cotton Straw to Improve Coastal Saline Soil
  • The Method of Using Cotton Straw to Improve Coastal Saline Soil
  • The Method of Using Cotton Straw to Improve Coastal Saline Soil

Examples

Experimental program
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Embodiment 1

[0026] 1. At the beginning of April 2003, a uniform plot of 20 meters long and 15 meters wide was drawn on the coastal saline soil to remove weeds;

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

[0028] 3. Manually remove the saline soil that is more than 20 cm above the groundwater level; if the groundwater level is -90 cm, dig out a 70 cm thick saline soil layer;

[0029] 4. Directly cut cotton stalks arranged in a certain density in the east-west direction, with a thickness of 10 cm, and a total weight of about 30 kg per square meter, and then cover with gravel of 1-2 cm in thickness. 5 cm. Then cover the straw with a thickness of 10 cm in the north-south direction at a certain density, and then cover with 5 cm of gravel with a grain diameter of 1-2 cm. Tamp the isolation layer with heavy objects to increase the density of the isolation layer, so that the gravel is fully buried in the gaps of the cot...

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Abstract

The invention discloses a method for improving coastal saline soil by using cotton stalks, belonging to the technical field of soil improvement. Its characteristics are that the improved plots are drawn on the coastal saline-alkali land; the saline soil that is 20 cm above the groundwater level is removed; the cotton straws mixed with rice straw are arranged in order and flattened into a 10-cm thick straw layer; the straw layer Cover the saline soil in parallel in the same direction, evenly cover it with gravel with a grain diameter of 1-2 cm, and a thickness of 5 cm, which is an isolation layer; two isolation layers like this; compact. Evenly cover the surrounding saline-alkali soil on the isolation layer; plant salt-tolerant plants in the saline-alkali soil; cover the saline-alkali soil with straw with a thickness of 3 cm. After implementing the invention, the salinity content of the soil decreases obviously; the organic matter of the soil increases. The isolation effect is obvious. In addition to isolation, cotton stalks also increase soil nutrients, which is beneficial to the growth of plants. The operation is simple and low cost, and can be popularized and applied in a large area; and the cotton stalks can be recycled and reused.

Description

Technical field [0001] It belongs to the technical field of soil improvement, specifically related to methods of improving saline soil. Background technique [0002] Coastal beaches belong to the coastal junction zone, a zone where ocean and land interact. In ecology, it belongs to the category of ecological environment transition zone, that is, in the ecosystem, it is in two or more material systems, energy systems, structural systems, and functional systems The "interface" formed between them, and the spatial domain of the "transition zone" that extends outward around the interface. The "eco-environmental transition zone" is closely related to the "eco-environmental fragile zone", and its ecosystem has the characteristics of instability, high sensitivity, and easy degradation. Due to the dual effects of sea tide and seawater-type groundwater, coastal beach soil has the characteristics of heavy salt content and low nutrient content. [0003] Underground isolation measures (above...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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