Method for renovating sand land and desert land capable of preventing water leakage and evaporation

Abstract

According to the method for renovating sand and desert fields with water leakage and evaporation resistance, holes are dug in the corresponding depth of soil according to the development degree condition of roots of planted plants and the needed area, then an anti-leakage layer is laid, crops or trees are planted after backfilling, and the surface of the land is covered with an anti-evaporation layer after watering. According to the sandy land and desert field improvement method, moisture, nutrients and humidity in soil can be preserved in a soil layer with a certain area and corresponding depth for a long time, moisture and nutrient loss is prevented, meanwhile, the temperature in the soil is kept, the farming mode that people work on duty for thousands of years is ended, the sandy land and desert field is endowed with the anti-seepage and anti-evaporation functions, and the effect of improving the quality of the sandy land and desert field is achieved. Water-saving irrigation is improved to a new height, and the method has important significance in developing planting of trees or crops in deserts, sand lands, saline-alkali soil and depression.

Description

Technical Field

[0001] The invention belongs to the technical field of agriculture, and in particular relates to a method for improving sandy land and desert fields to prevent moisture leakage and evaporation. Background Art

[0002] Traditionally, farmland irrigation generally adopts flood irrigation, which is limited to areas with abundant water resources and well-connected irrigation networks. For relatively arid areas, water-saving irrigation is mainly used, such as laying drip irrigation pipes to drip irrigate the fields. However, drip irrigation can only save water, but cannot prevent leakage or evaporation. For particularly arid sandy or desert areas, it cannot achieve a good water-saving and moisture-retaining effect. Summary of the invention

[0003] The purpose of the present invention is to create a method for renovating sandy and desert fields, which can prevent water that people pour into sandy land or desert from seeping into the ground quickly or evaporating easily, and can maintain nutrients and temperature in the soil for a long time, thereby preventing water from leaking and evaporating.

[0004] The method of remediation of sandy land and desert fields to prevent moisture leakage and evaporation is to dig a pit and lay an anti-seepage layer according to the root development of the plant and the required area at the corresponding depth of the soil. After the soil is backfilled, crops or trees are planted. After the planting is completed, the anti-evaporation layer is covered on the surface of the land. The specific steps are as follows:

[0005] (1) digging a pit of the required area and depth, with the bottom of the pit horizontal and the pit wall at a certain angle, preferably 30-45 degrees;

[0006] (2) laying an anti-seepage layer on the bottom and four walls of the pit. The material of the anti-seepage layer, such as concrete, asphalt, rubber, metal, plastic film, plastic cloth, is preferably plastic film or plastic cloth in consideration of cost, economy, practicality and convenience of construction;

[0007] (3) Backfill the excavated soil into the pit with the anti-seepage layer, and make the backfill surface level;

[0008] (4) After backfilling, crops and trees are planted and watered, and then an anti-evaporation layer is laid on the soil surface. The anti-evaporation layer is made of a plastic film that allows irrigation water or rainwater to enter the soil while preventing the moisture in the soil from evaporating easily. After the plastic film is laid, it is pressed to the ground using a pressure belt using a warp and weft rag method to prevent it from falling off due to wind and damaging the anti-evaporation layer. Finally, ridges are added as needed. In desert areas, ridges made of plastic shells are used.

[0009] The present invention has the following beneficial effects:

[0010] The sandy land and desert field improvement method of the present invention can keep the water, nutrients and humidity in the soil in a soil layer of a certain area and corresponding depth for a long time, prevent the loss of water and nutrients, and maintain the temperature in the soil at the same time, ending the step-by-step farming mode of people for thousands of years, giving the sandy land and desert fields anti-leakage and anti-evaporation functions, and raising water-saving irrigation to a new level, which is of great significance to the development of tree or crop planting in deserts, sandy land, saline-alkali land and depressions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of a pit dug for sandy land and desert field improvement according to the present invention, wherein the pit wall is at a certain angle;

[0012] Figure 2 Schematic diagram of the large-scale pits dug in a flat area in the present invention in the shape of rectangle, square, triangle and trapezoid;

[0013] Figure 3 This is a schematic diagram of a strip-shaped pit dug on both sides of a highway or railway or at the bottom of a ditch according to the present invention;

[0014] Figure 4 It is a schematic diagram of the present invention that the pit dug in the mountain, slope or hill terrain is in a ring or semi-ring shape;

[0015] Figure 5 This is a schematic diagram of the present invention's small-area pits dug in special terrain and special locations in the shape of squares, semicircles, and circles. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are further described in conjunction with the accompanying drawings:

[0017] like Figure 1-Figure 5 As shown in the figure, the method of remediation of sandy land and desert fields to prevent moisture leakage and evaporation is to dig a pit and lay an anti-seepage layer according to the root development of the plant and the required area at the corresponding depth of the soil. After the soil is backfilled, crops or trees are planted. After the planting is completed, the anti-evaporation layer is covered on the land surface. The specific steps are as follows:

[0018] (1) digging a pit of the required area and depth, with the bottom of the pit horizontal and the pit wall at a certain angle, preferably 30-45 degrees;

[0019] (2) laying an anti-seepage layer on the bottom and four walls of the pit. The material of the anti-seepage layer, such as concrete, asphalt, rubber, metal, plastic film, plastic cloth, is preferably plastic film or plastic cloth in consideration of cost, economy, practicality and convenience of construction;

[0020] (3) Backfill the excavated soil into the pit with the anti-seepage layer, and make the backfill surface level;

[0021] (4) After backfilling, crops and trees are planted and watered, and then an anti-evaporation layer is laid on the soil surface. The anti-evaporation layer is made of a plastic film that allows irrigation water or rainwater to enter the soil while preventing the moisture in the soil from evaporating easily. After the plastic film is laid, it is pressed to the ground using a pressure belt using a warp and weft rag method to prevent it from falling off due to wind and damaging the anti-evaporation layer. Finally, ridges are added as needed. In desert areas, ridges made of plastic shells are used.

[0022] This remediation method is set in four types according to the terrain, area size, soil layer characteristics and location: (1) On flat land, the shape of the pit is rectangular, square, triangle, trapezoidal, and the area is large;

[0023] (2) On the sides of roads and railways, or in mountain valleys, where it is easy to plant in rows, the pits dug are strip-shaped; (3) On mountainous, sloping or hilly land, the pits dug are mainly circular or semi-circular; (4) In land with special terrain, special locations or special geological structures, the pits dug are square, semi-circular or circular, with small-area pits being the main type.

[0024] The sandy land and desert field irrigation of the present invention can adopt flood irrigation, sprinkler irrigation, rainwater irrigation and drip irrigation. In a flat large area of ​​sandy land, water can be introduced into the flood irrigation by building a channel; or sprinkler irrigation facilities can be laid to water the fields by spraying. In desert fields, drip irrigation facilities can be laid to carry out drip irrigation and water replenishment. In places with abundant precipitation, rainwater can be fully utilized for irrigation.

Claims

1. A method for remediating sandy land and desert fields to prevent moisture leakage and evaporation, characterized by: According to the degree of development of the root system of the plant and the required area, the anti-seepage layer is laid after digging the pit. After the soil is backfilled, crops or trees are planted. After the planting is completed, the anti-evaporation layer is covered on the land surface. The specific steps are as follows: (1) Dig a pit of the required area and depth, with the bottom of the pit horizontal and the pit wall at a certain angle, preferably 30-45 degrees; (2) Laying an anti-seepage layer on the bottom and four walls of the pit. The material of the anti-seepage layer may be concrete, asphalt, rubber, metal, plastic film, or plastic cloth. Considering the cost, economical practicality, and convenient construction, plastic film or plastic cloth is preferred; (3) Backfill the excavated soil into the pit with the anti-seepage layer, and make the backfill surface level; (4) After backfilling, crops and trees are planted and watered, and then an anti-evaporation layer is laid on the soil surface. The anti-evaporation layer is made of a plastic film that allows irrigation water or rainwater to enter the soil while preventing the moisture in the soil from evaporating easily. After the plastic film is laid, it is pressed to the ground using a latitude and longitude rag to prevent it from falling off in the wind and damaging the anti-evaporation layer. Finally, ridges are added as needed. In desert areas, ridges made of plastic shells are used.

2. The method for renovating sandy land and desert fields to prevent moisture leakage and evaporation according to claim 1 is characterized by: This remediation method is set in four types according to the terrain, area size, soil layer characteristics and location: (1) On flat land, the pits are in the shape of rectangles, squares, triangles, trapezoids, and are large in area; (2) On the sides of roads and railways, or in mountain valleys, where it is easy to plant in rows, the pits are dug in strips; (3) For land planted on mountainous areas, sloping land or hills, the pits dug are mainly circular or semi-circular; (4) In special terrain, special locations, and land with special geological structures, the pits dug are square, semicircular, or circular, with small-area pits being the main type.

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