Study on the regulation of nitrogen accumulation and translocation in high-oil soybean

The dynamic of dry matter in upside-plant and the dynamic change of nitrogen accumulation and translocation on different development stage of soybean were studied.The results show that:accumulation of dry matter in each organ(except pod)were up to peak between pod-setting and pod-filling stage;but the difference was existed in nitrogen accumulation of different organ:nitrogen accumulation in leaf was a curve with one peak and the peak was in pod-setting stage;nitrogen accumulation in petiole and stem was in drop tendency,the am - plitude of variation was little;nitrogen accumulation was increase fast in pod after pod-setting stage,nitrogen content in leaf on different position was increase first and then decrease,nitrogen content in petiole on different position was high-low-high tendency.