US 5,472,458 A · Artificial soil structure and a method of preventing land desertification using the same

Abstract

An artificial soil structure includes at least one hydrophobic layer of hydrophobic particles provided in a soil. A particle size of the hydrophobic particles can be 2000 micrometers and less. The hydrophobic particles are sand and/or dirt treated with a water-repellent agent or hydrophobic particles having a high molecular weight polymer. An artificial water-retentive soil structure includes a soil block containing a water-retentive agent and a hydrophobic layer of hydrophobic particles provided on the soil block. A method of preventing land desertification includes the steps of placing a hydrophobic layer of hydrophobic particles in a soil at a prescribed depth from the earth surface and controlling the water content in said soil.

Claims15

Dependent claims

An artificial water-retentive soil structure comprising:

a soil block comprising soil particles;
and
at least one sand layer consisting of sand treated with fluoro-type water-repellant agent, wherein said sand layer is located in the soil above ground water level and below roots of a plant;
said sand layer being located from about 40-80 cm below a top surface of the soil;
sand in said sand layer having an average particle size of about 2,000 micrometers or less,
said sand layer having a thickness of 1 to 5 cm.

3 more elements

Dependencies are inferred from the claim text.

Artificial soil structure and a method of preventing land desertification using the same

Life of this patent

Artificial soil structure and a method of preventing land desertification using the same

Life of this patent

Abstract

Claims15