According to the climatic features and the production condition of south Ningxia mountain area

we take the water-storage pIanting ditches

protected furrows and plastic film cover as an integrated techniques

by using of the methods such as tillage

cultivating

rotation planting

fertilizing

water saving and soil moisture maintaining etc.

planting crops singly or intercropping

multiping storage ditches on hilly farmland

and establishing a tillage technical system to conserve water and maintain soil moisture

and to promot the water conversing and to raise the famland productivity on such hilly land.The resuIt shows that this tillage technique is very useful in saving the precipitation and controlling the soil and water loss

so it can strengthen the drought resistance of crops

raise the water use efficiency and productivity of crops.As an average grain and oilcrop yield can get raise of 60% in single planting and intercropping planting;the rate of drought resistance

soil moisture maintain in growth period can raise of 14. 6% ~ 17.85%;soll molsture storage efficiency reached 42.5% ~71.5% higher than the traditional tillage method;the efficiency of water productivity can get of more than 40%.