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Saline-alkali land natural soil improving and greening method

A saline-alkali land and soil technology, applied in land preparation methods, botanical equipment and methods, horticulture, etc., can solve problems such as failure of normal growth of seedlings and rising pH value

Inactive Publication Date: 2018-08-07
天津创世生态景观建设股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology requires a large amount of fresh water many times, and when the total salt content drops to about 0.4%, it is difficult to drop again. At the same time, as the salt drops, the PH value will rise, causing the seedlings to still fail to grow normally.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for improving greening of saline-alkali land original soil, the specific steps are as follows:

[0022] (1) Add crushed crop straw to the saline-alkali soil. When the soil bulk density is 1000-1200kg / m, mix according to the weight ratio of soil: straw crushed material at a ratio of 3:1, and the soil bulk density is 1200-1400kg / m. 3 At the same time, mix according to the weight ratio of soil: crushed straw of 2.5:1, and the soil bulk density is 1400-1600kg / m 3 When the weight ratio of soil: crushed straw is 2:1, when the soil bulk density is above 1600kg / m3, mix according to the weight ratio of soil: crushed straw of 1:1, so that the saline-alkali soil Bulk density reaches 800-1000g / m 3 ;

[0023] (2) Take soil samples and calculate the amount of desulfurized gypsum and vinegar grains added by soil column experiments. The amount of desulfurized gypsum is half of the total salt content of the original soil. If the total salt content of the original soil is 20‰,...

Embodiment 2

[0032] Haihe Education Park Phase II infrastructure project landscape greening construction 3 bid section project adopts the method of saline-alkali soil original soil improvement and greening according to the present invention. Since entering the site, the whole project has set 40 soil testing points, and comparative testing is carried out in spring and autumn every year. Improvement measures to ensure that the planting soil meets the "Tianjin Greening Soil Standard". Through a year of tracking and monitoring, the plant survival rate of the project has reached over 98%, and the soil continues to meet the specifications of the "Tianjin Urban Greening Industry Standards". 47 species of birds have been detected in this project, including 34 species of waterfowl. The overall environment has been improved. Great improvement, the amount of green is greatly increased. At the same time, the project won the National Quality Engineering Gold Award.

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PUM

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Abstract

The invention provides a saline-alkali land natural soil improving and greening method. The method comprises the following steps that (1), crop straw crushed materials are added into saline-alkali land soil, wherein the volume weight of the saline-alkali land soil reaches 800-1,000 g / m<3>; (2), desulfuration gypsum and vinegar residues are added; (3), overall flood irrigation is conducted once with a flood, a ridge with the height being 15 cm is made around natural soil, the overall stored water is 10 cm, natural penetrating is conducted, and water tamping is completed in the salt-leaching process; (4), alfalfa is planted integrally; (5), natural leaching is conducted in the rainy season, and cow dung being 5 cm and turfy soil being 2 cm are laid integrally; (6), salt-tolerance seedlings are planted in winter, and a tree pit is improved to ensure cold water and tree pit cold protection; (7), large-area seedling planting is conducted in spring in the second year; (8), ordinary maintenance is conducted so as to ensure that the tree pit is not hardened. According to the method, by improving the ecological environment of the saline-alkali land and effectively utilizing the saline-alkali land, the survival rate of saline-alkali land greening is increased.

Description

technical field [0001] The invention relates to the field of saline-alkali soil improvement, in particular to a method for improving and greening saline-alkali soil. Background technique [0002] The soil in saline-alkali soil is alkaline, with a high pH value and a total salt content of more than 0.5%. The saline-alkali soil has less organic matter content, low soil fertility, and poor physical and chemical shape. [0003] At present, the main improvement method of saline-alkali land is to add a highly permeable admixture, and then use a large amount of fresh water to wash the salt, so as to reduce the total salt content of the soil. This technology needs a large amount of fresh water many times, and when the total salt content drops to about 0.4%, it is not easy to drop again. At the same time, with the drop of salt, the pH value will rise, causing the seedlings to still fail to grow normally. Contents of the invention [0004] The technical problem to be solved by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G22/00
CPCA01B79/00
Inventor 王志新陈小奎史凌霄
Owner 天津创世生态景观建设股份有限公司