AbstractHigh‐density planting is a strategy employed to save resources in crop production, particularly in environmentally friendly double‐season rice (Orvza sativa L.) cropping, where it promotes high grain yield and reduces required nitrogen (N) input. We conducted a field experiment in 2014–2018 to detect the combined effect of increased seedling density and reduced N input on early rice grain yield and N use efficiency (NUE). The higher basic seedling with low N input treatment (T2) had an average grain yield of 7.01 t ha−1, which was 1...
