Method for constructing terraces in ecological isolation belt in dry-hot valley region

Abstract

The invention discloses a method for constructing terraces in an ecological isolation belt in a dry-hot valley region. The method includes the following steps: S1, selecting terraces on a slope body with a gradient of less than 25 degrees in the dry-hot valley region, and connecting upper and lower adjacent two layers of field surfaces with a gradient of less than 25 degrees; S2, digging a water retaining ditch on the field surface and repairing the bottom of the water retaining ditch into an inverted V-shaped inclined plane, laying a water diversion layer on the bottom of the water retainingditch, laying a water retaining layer above the water diversion layer, and covering soil above the water retaining layer as a water seepage layer; S3, planting a row of mango tree seedlings between every two adjacent rows of water retaining ditches; S4, in August-September, sowing tropical pastures on the field surface; and S5. building a grape frame on the ridge, and planting grapes at the lowerfoot of the grape frame. The terraces in the ecological isolation belt in the dry-hot valley region constructed by the construction method can reduce the evaporation of field water, increase the diversity of farmland ecological landscape, and at the same time can obviously improve the yield of mango and economic benefits.

Description

technical field [0001] The invention relates to a method for constructing ecological terraced fields, in particular to a method for constructing terraced fields in an ecological isolation zone in a dry-hot valley region. Background technique [0002] The dry-hot valley region is one of the typical ecological fragile zones and ecosystem degraded areas in China. This region is an alpine and canyon landform, which is characterized by many slopes and few flats, and the topography is closed, the soil layer is shallow, and the geological conditions are unstable. This area has more than 350 days of daily average temperature ≥ 10°C in a year, rich in light and heat resources, hot and rainy, serious soil erosion, and a very fragile ecological environment. [0003] At present, the implementation of terracing in hot and dry valleys is usually an effective way to control soil erosion and improve the productivity of cultivated land. [0004] However, the existing methods of constructing...

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Problems solved by technology

[0004] However, the existing methods of constructing terraced fields are unreasonable. During the cultivation of terraced fields, the evaporation of water in the field is large, resulting in drought, water shortage and low yield of crops, which limits the agricultural development in this area.

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