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2 施氮水平对不同耐盐型夏玉米产量及产量构成的影响

Table 2 Effects of nitrogen levels on grain yield and yield components of different salt-tolerant summer maize

年份 Year 品种 Variety 处理 Treatment 籽粒产量 Grain yield (mg·kg-1) 收获穗数 Ear number (×104 ears/hm2) 穗粒数 Kernel number per ear 千粒重 1000-grains weight (g) 穗行数 Rows number per ear 行粒数 Kernels number per row 2016 DH605 N0 5.58b 5.67b 455.86b 280.50b 15.6a 29.2b N1 7.39a 5.95a 524.80a 303.01a 16.0a 32.8a N2 7.64a 5.96a 571.71a 308.34a 16.4a 34.9a LD818 N0 5.31b 5.61b 462.59b 272.14b 14.3a 32.4b N1 6.89a 5.92a 522.42a 295.36a 14.9a 35.0a N2 6.94a 5.97a 491.07a 313.81a 14.4a 34.1a LD981 N0 5.22c 5.45b 471.02b 274.10b 14.6a 32.3b N1 6.50b 5.74ab 495.99b 301.44a 14.6a 34.0ab N2 7.08a 5.86a 553.30a 312.40a 15.2a 36.4a LS188 N0 4.22c 5.26b 463.84b 257.03c 15.3a 30.3b N1 5.56b 5.72a 468.49b 276.81b 15.0a 31.2ab N2 6.67a 5.84a 503.51a 302.13a 15.1a 33.3a 2018 DH605 N0 3.75b 5.67b 277.87b 237.58b 15.0a 18.6b N1 4.71a 6.00a 324.07a 263.82a 14.6a 22.2a N2 4.81a 6.28a 336.31a 265.37a 14.6a 23.0a LD818 N0 3.69b 5.39b 288.96b 237.40b 13.6a 21.3b N1 4.57a 5.83a 316.13a 261.10a 13.5a 23.4a N2 4.72a 5.89a 333.31a 261.20a 14.5a 22.9a LD981 N0 3.13c 5.11b 289.16c 225.49b 13.3a 21.8a N1 4.17b 5.61a 314.27b 241.45a 14.2a 22.1a N2 4.65a 5.83a 334.63a 252.64a 14.8a 22.6a LS188 N0 3.09c 4.94b 290.46c 216.03c 14.5a 20.0b N1 4.13b 5.67a 315.52b 245.00b 14.5a 21.8ab N2 4.60a 5.61a 331.52a 262.27a 14.9a 22.3a