Aimed to increase seed yield and nitrogen utilization efficiency,the effect of split-nitrogen application in spring on the seed yield,seed components and nitrogen use efficiency in Russian wildrye(Psathyrostachys juncea(Fisch.) Nevski) was studied.Split application of 100 kg N per hm2 at regreening stage and early earing stage respectively with a total spring nitrogen application of 200 kg N per hm2 resulted in the highest seed yield of 2761.8 kg hm-2,which was 117% higher than the control with no nitrogen ...