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Method for platform field afforestation of coastal heavily saline-alkali soil

A saline-alkali land and saline-alkali technology, applied in the field of afforestation, can solve the problems such as the lack of afforestation methods for coastal heavily saline-alkali land, and achieve the effects of improving the survival rate and preservation rate of afforestation, the effect is good, and the ecological and economic benefits are improved.

Pending Publication Date: 2019-01-15
JIANGSU ACAD OF FORESTRY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although using this method can improve the survival rate and preservation rate of forest trees, it is still necessary to carry out afforestation by combining rainwater washing and salt collection, setting up isolation layers to resist salt, and ground surface covering to reduce evaporation and preserve moisture.
At present, there is no simple and easy method of afforestation in heavy saline-alkali coastal areas

Method used

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  • Method for platform field afforestation of coastal heavily saline-alkali soil
  • Method for platform field afforestation of coastal heavily saline-alkali soil
  • Method for platform field afforestation of coastal heavily saline-alkali soil

Examples

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Embodiment 1

[0023] In spring, at the coastal afforestation experiment station of Jiangsu Academy of Forestry Sciences, Dafeng District, Yancheng City, Jiangsu Province, spread 10cm thick dry straw on the ground of the area to be set up, and use an excavator to remove 0-30cm of straw within 20m on both sides of the area. The deep soil is piled to the area to be set up to form a terraced field with a trapezoidal longitudinal section: the upper bottom is 10m wide, the lower bottom is 18m wide, the height is 1.2m, and the slope is 10.3°.

[0024] Lay black agricultural film on the upper surface of the terrace, plant Zhongshan fir (row spacing between plants and rows: 3m×4m) on the upper and lower surfaces of the terrace fields, and plant crape myrtle, hibiscus, cypress and oak oak (row spacing between plants and rows: 3m×4m) on the slope.

[0025] After 4 years of conventional management, the preservation rate and growth of each tree species, as well as the impact on soil salinity, were tested...

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Abstract

The invention belonging to the technical field of afforestation provides a method for platform field afforestation of coastal heavily saline-alkali soil. The method comprises: a platform field is built in a coastal heavily saline-alkali field and seedlings are planted in the platform field; and a salt isolation layer is laid at the lower surface of the platform field and a membrane covers the upper surface of the platform field. With the method provided by the invention, the preservation rate is increased by 1.6 to 18.4 times after planting of 4 years and reaches 60 to 98%; the average salt reduction rate of the soil at the depth of 0 to 20 cm in the platform field is 97.523 %; the average salt reduction rate of the soil at the depth of 20 to 40 cm in the platform field is 97.796%; and theaverage salt reduction rate of the soil at the depth of 40 to 60 cm in the platform field is 94.464%. The method is operated simply. With the method provided by the invention, the survival rate and preservation rate of the afforestation can be increased obviously; the normal growth of the seedlings at the later stage is ensured; and the ecological and economic benefits are increased.

Description

technical field [0001] The invention belongs to the technical field of afforestation, and in particular relates to a method for afforestation of coastal heavily saline-alkali terrace fields. Background technique [0002] Salinization is a manifestation of desertification, and coastal saline-alkali tidal flats have poor habitats and have always been the most difficult area for afforestation. The salinity of the soil in heavy saline-alkali land is generally more than 5% per thousand. In order to improve the survival rate and preservation rate of afforestation in heavy saline-alkali land, trenches are generally used to reduce the salinity in the soil by rainwater. [0003] In the Chinese authorized patent CN101322470B, a method for afforestation of coastal saline-alkali land is described, comprising the following steps: A, ditching and building the back, and building a rain-collecting bed; B, setting a rain-collecting surface; C, digging a tree hole, and setting a salt barrier ...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01G23/00A01G13/02
CPCA01G13/0262A01G17/005A01G23/00Y02P60/40Y02A40/22Y02A40/28
Inventor 何旭东郑纪伟王伟伟姜开鹏王保松
Owner JIANGSU ACAD OF FORESTRY
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