基蘖同步侧深施下氮肥运筹对水稻生长、氮素利用和产量的影响

游昊, 宋文杰, 付斌, 张大弘, 江勋, 卢碧林

Effects of Synchronized Basal-Tiller Side Deep Nitrogen Application on Rice Growth, Nitrogen Use Efficiency, and Yield

You Hao, Song Wenjie, Fu Bin, Zhang Dahong, Jiang Xun, Lu Bilin

表3 各处理下水稻的氮素利用率

Table 3 N use efficiency of rice under each treatment

年份 Year 处理 Treatment 氮素积累量 Nitrogen accumulation (kg/hm2) 氮素表观利用率 ANUE (%) 氮素农学利用率 AE (kg/kg) 氮素生理利用率 PNUE (kg/kg) 氮素偏生产力 PFPN (kg/kg) 2021 N0 81.08±2.52d / / / / N1 161.50±2.33a 41.24±2.49a 16.49±0.86a 40.03±1.93ab 54.60±2.03c N2 141.88±1.17b 34.64±0.78b 14.50±0.75b 41.90±2.97a 56.84±1.68b N3 123.10±5.54c 26.93±3.51c 11.09±1.26de 41.34±3.20a 58.72±0.23a N4 141.97±3.55b 34.69±2.96b 12.80±0.37c 37.11±3.98cd 55.13±1.26c N5 121.87±1.18c 26.14±2.07c 10.13±0.39e 38.88±2.72bc 57.76±1.86ab CK 144.79±2.90b 32.67±2.27b 11.74±0.37cd 36.04±2.43d 49.85±1.48d 2022 N0 70.70±0.69d / / / / N1 141.29±3.34a 36.20±1.67a 14.20±0.78a 39.24±0.72abc 47.03±1.77c N2 122.81±1.54b 29.67±0.93b 12.49±0.63b 42.11±2.73ab 48.96±1.49b N3 105.29±4.59c 22.17±2.89c 9.54±1.10c 43.16±3.32a 50.57±0.20a N4 121.65±6.77b 29.03±3.67b 11.90±0.73b 38.29±5.35bc 47.46±1.15c N5 105.88±2.77c 22.56±1.69c 8.75±0.28c 38.91±1.87abc 49.79±1.57ab CK 125.86±0.70b 28.29±0.48b 10.08±0.29c 35.64±0.84c 42.90±1.25d 年份Year (Y) ** ** ** ns ** 处理Treatment (T) ** ** ** ** ** Y×T ns ns ns ns ns