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3 不同节水减氮模式下夏玉米开花前后营养器官干物质转运及对籽粒干物积累的影响

Table 3 Dry matter transfer before and after flowering and their contribution to grain dry matter as affected under different water-saving and nitrogen-reduction treatments

处理 Treatment 2018 2019 花前 Pre-anthesis 花后 Post anthesis 花前 Pre-anthesis 花后 Post anthesis DMR (kg·hm-2) DMRE (%) DMRCG (%) DMA (kg·hm-2) DMAC (%) DMR (kg·hm-2) DMRE (%) DMRCG (%) DMA (kg·hm-2) DMAC (%) W0 N0 1066b 18.69b 17.41a 5201e 82.59c 756b 14.34b 14.48a 6104d 85.52b N75 965b 14.93cd 12.99b 7262d 87.01b 628b 10.97b 8.11b 8443c 91.89a N150 1378a 22.32a 16.98a 9094a 83.02c 1177a 19.86a 14.58a 8718bc 85.42b N225 959b 16.34bc 11.91b 8696b 88.09ab 623b 11.56b 7.35a 10063a 92.65a N300 672c 12.22d 9.51c 7993c 90.49a 847b 14.51b 10.05ab 9458ab 89.95ab W1 N0 1243c 19.60c 18.13b 6857e 81.87b 1177b 20.01b 15.17b 8068d 84.83b N75 1671b 23.21b 19.26b 8813d 80.74b 1673a 24.10a 19.20a 8675c 80.80c N150 2459a 30.10a 25.91a 9314c 74.09c 1727a 25.15a 17.52ab 10429b 82.48bc N225 1657b 23.36b 17.02b 10752b 82.98b 1638a 21.49b 15.81b 10446b 84.19b N300 674d 12.33d 7.63c 11602a 92.37a 697c 8.89c 6.51c 12559a 93.49a W2 N0 1002bc 15.59ab 13.68b 6851d 86.32c 943b 14.43c 13.68b 8424d 86.32b N75 1423a 17.31a 16.52a 7301c 83.48d 1765a 23.25a 19.05a 8919c 80.95c N150 1109b 14.20b 11.42c 10285b 88.58bc 1495a 18.99b 14.71b 10434b 85.29b N225 728d 10.44c 7.27d 11967a 92.73a 905b 11.97c 9.11c 11385a 90.89a N300 850cd 11.30c 9.81c 9546b 90.19b 1565a 20.67a 15.77b 10839a 84.23b F-value W 198.1** 134.8* 112.0* 910.7** 112.0** 114.8* 43.8** 26.9** 101.2** 26.9*** N 148.2** 69.0** 106.5** 1630.8* 106.5** 33.3** 27.0** 20.7** 172.0** 20.7*** W*N 47.1** 20.0** 31.8** 156.9** 31.8** 27.9** 26.6** 17.8** 13.6** 17.8**