This study monitored and analyzed the wind and sand movement indexes of potato cultivated land under high ridge cultivation technology

such as upwind wind field

upper edge of cultivated land

center of cultivated land

lower edge of cultivated land

and downwind wind flow field.Results showed that the airflow from the upwind to the downwind during the movement was influenced by the high ridge cultivation techniques. The wind speed reduction

aerodynamic roughness and friction wind speed increased first and then decreased

which reached the maximum at the lower edge of the cultivated land. The wind prevention efficiency at the 10

30

50

100

200 cm height were 34.96%

46.59%

38.37%

26.68%

18.31% respectively. The aerodynamic roughness and friction wind speed were 2.15 cm and 0.91 m/s

which were 4.56 and 1.19 times that of the upwind. From the vertical direction

high ridge cultivation technique had the most obvious weakening effect on wind speed at 30 cm height. During the sand flow from the upwind to the downwind

its total sediment discharge per unit width decreased first and then decreased

with the lowest value in the lower edge of the cultivated land

0.02 g/(cm·min)

reduced by 207.97 times than the upwind. Within the cultivated land

sand flow structure changed

the sediment rates in different layers no longer met the law of exponential decline. This study could provide some theoretical basis for the application of high ridge cultivation technique in the wind prevention and sand resistance.