长期定位条件下不同氮肥运筹对春玉米根冠发育的影响

李喆豪, 姬米源, 吕梦, 明博, 李少昆, 张海艳, 谢瑞芝

Effects of Different Nitrogen Fertilizer Management Strategies on the Root and Shoot Development of Spring Maize under Long-Term Positioning Conditions

Li Zhehao, Ji Miyuan, Lü Meng, Ming Bo, Li Shaokun, Zhang Haiyan, Xie Ruizhi

表3 不同处理间的产量及生育时期

Table 3 Yield and growth period of different treatments

年份 Year 品种 Variety 处理 Treatment 出苗日期（月-日） Date of emergence (month-day) 抽雄日期（月-日） Date of tasseling (month-day) 成熟日期（月-日） Date of maturity (month-day) 籽粒产量 Yield (t/hm2) 收获指数 Harvest index 2023 ZD958 N3 05-21 07-24 09-27 11.82a 0.53a N2 05-21 07-24 09-27 11.56ab 0.53a N1 05-21 07-24 09-27 11.04b 0.52a N0 05-21 08-04 10-04 5.69c 0.46b XY335 N3 05-21 07-24 09-27 12.44a 0.56a N2 05-21 07-24 09-27 12.77a 0.55ab N1 05-21 07-23 09-27 11.83b 0.53b N0 05-21 08-04 10-04 5.63c 0.44c 2024 ZD958 N3 05-24 07-27 09-28 12.38a 0.51b N2 05-24 07-27 09-28 12.46a 0.53a N1 05-24 07-26 09-28 11.43b 0.52ab N0 05-24 08-06 10-06 4.84c 0.45c XY335 N3 05-24 07-27 09-28 13.11a 0.51a N2 05-24 07-27 09-28 12.66ab 0.53a N1 05-24 07-27 09-28 12.53b 0.53a N0 05-24 08-06 10-06 4.55c 0.47b