优化氮素与品种匹配可协同提高盐碱地夏玉米产量和氮肥利用率

高英波,张慧,刘开昌,张华斌,李源方,付希强,薛艳芳,钱欣,代红翠,李宗新

The Coordination of Nitrogen Optimization with Matched Variety Could Enhance Maize Grain Yield and Nitrogen Use Efficiency of Summer Maize in Saline Land

GAO YingBo,ZHANG Hui,LIU KaiChang,ZHANG HuaBin,LI YuanFang,FU XiQiang,XUE YanFang,QIAN Xin,DAI HongCui,LI ZongXin

表4 施氮水平对不同耐盐型夏玉米氮转运效率的影响

Table 4 Effects of nitrogen levels on N transition efficiency of different salt-tolerant summer maize

年份 Year 品种 Variety 处理 Treatment 成熟期籽粒含氮量 NAAG (kg·hm-2) 营养器官氮素转移量 NTA (kg·hm-2) 开花后氮素同化量 AANAA (kg·hm-2) 氮素转运效率 NTE (%) 氮素转运对籽粒的贡献率 NCP (%) 2016 DH605 N0 77.32b 22.81b 54.51b 28.13b 29.51a N1 127.05a 28.34a 98.71a 30.38ab 22.33b N2 131.38a 32.56a 98.82a 33.43a 24.80b LD818 N0 88.19c 26.14b 40.89b 38.68a 39.02a N1 121.69ab 32.63a 76.08a 37.44a 30.02b N2 134.37a 37.98a 75.37a 39.79a 33.52b LD981 N0 83.11c 28.08b 55.04c 36.09b 33.88a N1 117.10b 39.36a 77.73b 39.82a 33.68a N2 126.50a 38.39a 88.10a 37.97ab 30.40a LS188 N0 67.03c 24.90c 63.28c 31.45c 28.28a N1 108.71b 32.96b 88.73b 36.47b 27.09a N2 113.34a 39.75a 94.62a 41.31a 29.61a 2018 DH605 N0 49.28c 28.27b 21.01c 43.77a 57.35a N1 69.95b 33.05a 36.90b 34.70b 47.21b N2 77.33a 28.88b 48.45a 30.61c 37.32c LD818 N0 56.25b 33.36b 22.90c 48.73a 59.30a N1 77.84a 37.66a 40.18b 42.29b 48.39b N2 81.79a 35.29ab 46.50a 37.71c 43.14b LD981 N0 45.93c 16.18c 29.75c 33.19a 35.24b N1 57.51b 24.00b 33.51b 31.00a 41.83a N2 69.10a 27.32a 41.78a 31.77a 39.58a LS188 N0 52.34c 19.13c 33.21b 36.91a 36.61b N1 57.74b 26.03b 31.71b 31.64b 45.10a N2 71.71a 29.00a 42.71a 31.26b 40.55a