D Soil and environment protection

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D1
D1.jpgDIKES AND WODDEN OSTACLES
D2
D2.jpgGARDEN THRESHING FLOORS
D3
D3.jpgPLOUGHING AND WATER SPRINKLING
D4
D4.jpgLAND FIXED BY FARMING
D5
D5.jpgPLANT SPECIES TO COMBAT EROSION
D6
D6.jpgMANURE SCATTERING FOR PROTECTION AND AGAINST EVAPORATION
D7
D7.jpgOBSTACLES TO REDUCE THE WIND AND DEVIATE THE SAND
D8
D8.jpgIMPROVEMENT OF THE COMPOSITION OF HEAVY SOIL
D9
D9.jpgDECREASE OF STREAMS
D10
D10.jpgSYSTEM OF SOIL PROTECTION, WATER HARVESTING AND PROTECTION AGAINST THE WIND
D11
D11.jpgIMPROVEMENT OF ALKALIZED SALINIZED SOILS