节水减氮对夏玉米干物质和氮素积累转运及产量的调控效应

王旭敏,雒文鹤,刘朋召,张琦,王瑞,李军

Regulation Effects of Water Saving and Nitrogen Reduction on Dry Matter and Nitrogen Accumulation, Transportation and Yield of Summer Maize

WANG XuMin,LUO WenHe,LIU PengZhao,ZHANG Qi,WANG Rui,LI Jun

表4 不同节水减氮模式下夏玉米开花前后营养器官氮素转运及对籽粒氮素积累的贡献

Table 4 Nitrogen transfer before and after flowering stage and their contribution to grain N as affected under different water-saving and nitrogen-reduction treatment

处理 Treatment 2018 2019 花前 Pre-anthesis 花后 Post anthesis 花前 Pre-anthesis 花后 Post anthesis NR (kg·hm-2) NRE (%) NRCG (%) NA (kg·hm-2) NAC (%) NR (kg·hm-2) NRE (%) NRCG (%) NA (kg·hm-2) NAC (%) W0 N0 29.35d 45.18a 43.68a 34.23e 56.32b 23.47c 43.01bc 42.51b 49.70c 57.49b N75 42.29b 42.57a 39.95b 55.30c 60.05a 39.56b 45.85abc 35.81c 67.77b 64.19a N150 48.12a 43.91a 44.26a 53.33d 55.74c 49.62a 48.87ab 42.72b 57.28b 57.28b N225 47.47a 43.37a 42.17ab 69.84a 57.83b 52.19a 49.52a 47.07a 67.33b 52.93c N300 38.44c 38.13b 40.97ab 64.44b 59.03a 40.37b 40.23c 36.64c 87.49a 63.36a W1 N0 35.73d 42.59c 42.98b 37.14e 57.02b 27.66e 46.90ab 35.92c 58.37b 64.08a N75 54.60b 44.99b 43.47b 61.25c 56.53b 49.79d 46.35b 47.35ab 40.87d 52.65bc N150 65.24a 49.01a 48.56a 55.16d 51.44c 65.89c 48.35a 50.11a 52.95c 49.89c N225 65.74a 47.25a 48.38a 68.94b 51.62c 72.24a 46.55b 48.13ab 61.07b 51.87bc N300 43.87c 42.74c 35.27c 77.67a 64.73a 61.82b 43.74c 42.73b 84.87a 57.27b W2 N0 36.47d 38.88b 38.04c 44.68e 61.96b 33.89d 45.92b 37.77b 66.57bc 62.23a N75 59.37a 42.45a 48.49a 49.30d 51.51d 57.54b 47.88a 49.28a 59.27c 50.72b N150 58.04a 39.48b 41.27b 65.06c 58.73c 61.94a 44.53b 44.40a 72.50b 55.60b N225 43.82c 35.24c 32.08d 88.82b 67.92a 47.28c 35.98c 37.46b 74.66b 62.54a N300 51.32b 38.41b 32.07d 97.66a 67.93a 49.32c 37.91c 35.84b 83.74a 64.16a F-value W 410.81** 72.3*** 45.94*** 1012.73*** 45.94*** 96.61** 17.81*** 8.79*** 56.53** 8.79** N 538.88** 9.63*** 41.76** 3509.06*** 41.76*** 203.71** 23.39*** 13.27** 77.25*** 13.27*** W×N 82.21*** 10.23*** 27.78*** 280.55*** 27.78*** 33.61*** 13.93*** 10.73*** 14.65*** 10.73*