Split nitrogen fertilizer application improved grain yield in winter wheat (Triticum aestivum L.) via modulating antioxidant capacity and 13C photosynthate mobilization under water-saving irrigation conditions

Ecological Processes

Table 1 Effects of four split nitrogen fertilizer treatments on dry matter accumulation amount at anthesis and maturity and dry matter translocation after anthesis. Different letters in each column represent significant differences in each tissue among four treatments at each sampling date according to LSD at 5% level

Year	Treatments	Dry matter accumulation amount at anthesis (kg ha⁻¹)	Dry matter accumulation amount at maturity (kg ha⁻¹)	DMT (kg ha⁻¹)	CDMT (%)	DMAA (kg ha⁻¹)	CDMAA (%)
2016–2017	N1	12,197.10a	16,999.66a	2490.61a	34.15a	4802.56c	65.85b
	N2	11,973.31a	17,495.29a	2395.95a	30.26b	5521.98b	69.74a
	N3	11,977.48a	17,983.05a	2474.11a	29.17b	6005.57a	70.82a
	N4	12,345.23a	17,907.85a	2460.01a	30.66b	5562.62b	69.34a
2017–2018	N1	11,594.27a	16,032.37a	2468.70a	35.74a	4438.10c	64.26b
	N2	11,227.28a	16,256.94a	2374.28a	32.07b	5029.66b	67.93a
	N3	11,391.45a	16,897.80a	2555.17a	31.70b	5506.35a	68.30a
	N4	11,583.62a	16,731.20a	2465.35a	32.38b	5147.58b	67.62a

DMT Dry matter translocation amount, CDMT Contribution of pre-anthesis assimilates to grain, DMAA The dry matter accumulation amount after anthesis, CDMAA The contribution of dry matter accumulation amount after anthesis to grains