D Soil and environment protection

D1

DIKES AND WODDEN OSTACLES

D2

GARDEN THRESHING FLOORS

D3

PLOUGHING AND WATER SPRINKLING

D4

LAND FIXED BY FARMING

D5

PLANT SPECIES TO COMBAT EROSION

D6

MANURE SCATTERING FOR PROTECTION AND AGAINST EVAPORATION

D7

OBSTACLES TO REDUCE THE WIND AND DEVIATE THE SAND

D8

IMPROVEMENT OF THE COMPOSITION OF HEAVY SOIL

D9

DECREASE OF STREAMS

D10

SYSTEM OF SOIL PROTECTION, WATER HARVESTING AND PROTECTION AGAINST THE WIND

D11

IMPROVEMENT OF ALKALIZED SALINIZED SOILS