Developing a tactical irrigation and nitrogen fertilizer management strategy for winter wheat through drip irrigation.

For most of the treatments, nitrogen contents initially showed a trend of decreasing with an increase in soil depth and then increasing in deep layers. 3.2 Response of crop growth indicators to different treatments Data presented in Figures 6 , 7 represent the seasonal changes in winter wheat growth characteristics (leaf area index and plant height) during the 2017–2018 and 2018–2019 growing seasons under various irrigation scheduling, nitrogen application, and lateral spacing regimes.

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