Nitrogen supply modulates nitrogen remobilization and nitrogen use of wheat under supplemental irrigation in the North China Plain.

ABSTRACT: Excessive nitrogen (N) input and irrigation exacerbate N leaching in winter wheat production in the North China Plain (NCP). To explore the optimal N for better N remobilization and higher N utilization of wheat under water-saving irrigation will be conductive to less environmental contamination. A field experiment was conducted at 300 (N₃₀₀), 240 (N₂₄₀), 180 (N₁₈₀), and 0 (N₀) kg N ha^-1 of N application under supplemental irrigation (SI) that brought the relative soil water content (RSWC) to 70% at jointing and 65% at anthesis. Compared with N₀, N₁₈₀ improved the free amino acid content in the flag leaf and grain after anthesis, dry matter and plant N accumulation at maturity, N translocation amount of vegetable

SUBMITTER: Zheng X 

PROVIDER: S-EPMC7039916 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature