Method for preparing lands for afforestation in loess gully regions

Abstract

The invention discloses a method for preparing lands for afforestation in loess gully regions. The method includes steps of 1), selecting sites with terrain conditions on slope surfaces and excavating a semicircular planting hole a with an opening diameter of 1.2 m and the depth of 0.8 m in each site; 2), enclosing the planting holes by soil at down-slope positions and building outer ridges (1) with the vertical heights of 0.5 m; 3), refilling surface soil shoveled from the inner sides and the upper sides of the outer ridges (1) into pits and forming adverse slopes (2) in the pits; 4), excavating two symmetrical water diversion trenches (3) in the inner sides of two ends of each shaped outer ridge (1); 5), planting a tree plant and a shrub plant or a tree plant and a grass plant in each large fish scale pit. The method has the advantages that water storage capacity can be improved, growth requirements of the plants can be met, soil disturbance and workload can be reduced, soil erosion can be decreased, and the method is suitable for preparing the lands for afforestation in the loess gully regions and terrain broken regions.

Description

technical field [0001] The invention relates to the field of greening technology, in particular to a method for afforestation and land preparation in loess gully areas. Background technique [0002] Fish scale pit (a land preparation method before afforestation in the Loess Plateau area. It can improve the terrain and facilitate planting; increase the soil moisture content near the plants, reduce soil erosion, and improve the survival rate of the plants); mainly used in barren hills and farmland with slopes greater than 25° , Erosion ditch slopes and other parts to improve the topography, suitable for the planting of crops and trees. [0003] The fish scale pits are arranged staggeredly from top to bottom along the slope, two adjacent rows of fish scale pits are arranged in the shape of "pin", and the tree planting holes are arranged like fish scales as a whole. [0004] Each fish scale pit excavates a semicircular planting hole with a diameter of 60-80cm (usually 80cm in t...

AI Technical Summary

Problems solved by technology

[0008] 2. The water collection and storage capacity of the fish scale pit is average

Many studies have shown that compared with other land preparation methods (horizontal ditches, horizontal steps, etc.) in the Loess Plateau area including the present invention, although the Yulin pit is simple in layout, the water collection effect is poor;

[0009] 3. The soil disturbance in the fish scale pit is relatively large, which will bring more carbon emissions;

[0010] 4. The planting quantity per unit area of ​​fish scale pit is relatively small

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