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2 播种前土壤（0~20 cm）的养分指标

Table 2 Nutrient indicators of the soil (0-20 cm) before sowing

年份 Year 处理 Treatment 有机质 Organic matter (g/kg) 全氮 Total nitrogen (g/kg) 碱解氮 Alkali hydrolyzed nitrogen (mg/kg) 有效磷 Available phosphorus (mg/kg) 速效钾 Available potassium (mg/kg) pH 2023 N3 28.54a 1.03a 139.66a 39.34a 197.17a 5.66c N2 27.31a 1.03a 137.55a 35.97ab 195.92a 6.01b N1 26.40b 0.97b 124.16b 33.61b 192.13a 6.21a N0 26.17b 0.95b 117.78b 32.55b 185.31b 6.26a 2024 N3 29.07a 0.98a 150.12a 49.44a 191.37a 5.78c N2 28.50a 0.96ab 130.87b 43.48b 182.99ab 6.23b N1 27.13a 0.95bc 127.08b 35.04c 179.36b 6.24b N0 25.50a 0.93c 126.55b 32.33c 177.08b 6.71a