Study on Effect of Drawing Water from the Yellow River to Irrigate the Land in Ba League in Inner Mongolia

The research on effect of drawing water from the Yellow River to irrigate the land in Dengkou was conduted in Ba League,Inner Mongolia for 4 years.The results showed that : (1) The increase of soil salinization in soil surface raised from 0.5 g/kg to over 1.0 g/ kg was because of the irrigation(15000~22500m3/(hm2·a) for 4 years.(2) The suitable amount for irrigation for each year is 7500m3/hm2 and the lowest demarcation of the best soil water rate was 19.99%.The ground water table was 1.97~3.02m,the range wits 1m of the ground water table in the period of irrigation.(3) The irrigation freciuency is 8~12 times per year.