NAA: N accumulation at anthesis; NAM: N accumulation at maturity; NAP: post-anthesis N accumulation; NTA: N translocation amount; NTR: N

• 开花期氮素积累量；NAM:成熟期氮素积累量；NAP:花后氮素积累量；NTA:花前贮存氮素运转量；NTR:花前贮存氮素运转率。下同