The Distribution Dynamic of Nitrogen in Different Oilseed Rape and Different Growing Stage

Different nitrogen physiological efficiency oilseed rape were used as experiment materials,the relationship between nitrogen distribution in different organs and nitrogen physiological efficiency were studied under the normal nitrogen supply with 15N trace method.High nitrogen physiological efficiency variety(742) compared with low nitrogen physiological efficiency variety(Huiyou50),it was showed that,nitrogen distribution proportion in leaves and seeds are larger;nitrogen distribution proportion in husk of siquilin are smaller and the amount of nitrogen transportation is bigger;nitrogen distribution proportion in stem and root are corresponding;the most important nitrogen distribution fountain is leaf.