Large-scale forestation method for shrub species for especially-poor saline and alkaline land

Abstract

The invention discloses a large-scale forestation method for shrub species for especially-poor saline and alkaline land. The method comprises the steps of constructing a drainage system, carrying out forestation species selecting, carrying out soil amendment, carrying out land preparation bedding, carrying out mulching film covering, carrying out forestation and carrying out management. Compared with the prior art, the method has the advantages that no sandstone salt separating layer exists, a forest tree layer and soil interact, the depth of growth of roots can gradually increase, megaphanerophyte can gradually grow on forest land, and the survival rate of forestation is greatly increased; the cost of forestation greening of strongly-saline soil is remarkably reduced, and the forestation cost is not higher than 20 RMB per square meter; and the conventional agricultural measures are adopted, forest tree root growth layers can gradually promote the amendment and salt reduction of subsoil, forest trees and environment can form a healthy ecological system after the subsoil is subjected to natural salt reduction, irrigation is not required, and the management is hardly needed at the later stage.

Description

technical field [0001] The invention relates to the technical field of afforestation, in particular to a method for large-scale afforestation of shrub species in saline-alkali-poor lands. Background technique [0002] (1) Site characteristics and afforestation difficulties in the saline-alkaline extreme poverty along the coast of Jiangsu [0003] The coastal areas of Jiangsu are typical Yulong tidal flats, and the sites available for forestry applications are generally areas where new land reclamation and inadequate irrigation and water conservancy facilities are available. The cultivated layer of these sites is shallow, and generally there is no cultivated layer, or the cultivated layer is within 5cm. The soil structure is poor, the soil is fine and silty, the particles are small, and there is no aggregate structure; the soil is compacted and the air permeability is poor; the soil capillary is well developed, the soil water evaporates quickly, and the surface seepage of sa...

AI Technical Summary

Problems solved by technology

[0027] The cost of afforestation per square meter in the existing technology is between 120 yuan and 200 yuan, which cannot be used for large-scale afforestation production

[0028] 2. Ecological impact

[0031] Due to the existing engineering technology, after the salt barrier layer is laid, the growth soil layer of the trees is only about 60cm, which will affect the high growth of large trees in the future.

[0032] 4. High cost of management and maintenance

It cannot be applied in places without irrigation conditions