Effects of Different Water Treatments on Nitrogen Accumulation and Grain Protein Content of Wheat for Specialized End-Uses in Latter Period

Effects of different water treatments on nitrogen accumulation,translocation and grain protein content of wheat for specialized end-uses was studied by using basin-planted form.The results showed that N content of wheat leaf sheath and stem decreased gradually after blooming,while N content in root decreased first and then increased.(1) Nitrogen content of leaf sheath was improved with 80%field capacity treatment for three wheat varieties,N content of stem was not different significantly with three treatments for yumai 34,was improved with 60%FC treatment for Yumai 49 and was highest with 40% field capacity treatment for Yumai 50.(2) The result of nitrogen translocation volume of vegetative organs showed that Yumai 50 Yumai 49 Yumai 34 in three wheat cultivars and appeared that 80%FC60%FC40%FC in different cultivars with different water treatments.(3) The result of nitrogen translocation efficiency showed that 80%FC60%FC40%FC in three cultivars.However,N translocation efficiency in stem of different cultivars with different water treatments was different in three cultivars,the results showed that N translocation efficiency was 40%FC60%FC80%FC for Yumai 34,60%FC40%FC80%FC for Yumai 49,and 60%FC80%FC40%FC for Yumai 50.(4) The result of the contribution rate of vegetative organs and total N transferring to grain showed that 80%FC60%FC40%FC.The translocation volume and contribution rate of different vegetative organs showed that leaf sheathstem,and the translocation efficiency of vegetative organs showed that stemleaf sheath.(5) As for Yumai 34,both grain protein content and yield were highest with 60%FC treatment,and protein yield was different.For both Yumai 49 and Yumai 50,grain protein content was highest with 40%FC treatment,while protein yield was highest with 80%FC treatment.Both grain protein content and yield were different for Yumai 49,and only grain protein content was different significantly for Yumai 50.