On Effect of Different Water and Nitrogen Condition on Nitrogen Absorption,Translocation and Accumulation of Oat

An experiment has been carried out to study the effect of different water and nitrogen condition on nitrogen absorption,translocation and accumulation of different oat cultivars Baiyan2 and Baiyan7,widely planted in Inner Mongolia,which different in nitrogen treatment,at irrigation and drought,and also to seek the mechanism of efficient use of water and nitrogen of oats.The results show that,nitrogen treatment has great influence on plant nitrogen absorption,grain yield.Under the same nitrogen application condition,plants nitrogen accumulation of irrigation is obviously more than that of drought at maturing stage;with the increase of nitrogen,plants nitrogen accumulation increase at maturing stage,nitrogen in vegetative organs accumulation increase;there is no significant change on the efficiency of nitrogen translocation,nitrogen contribution rate,use efficiency of nitrogen with the increase of nitrogen,if the nitrogen is over more,it would restrain the nitrogen translocation and utilization.So the right amount of nitrogen would assure higher nitrogen utilization.