北方粳稻最优产量氮肥阈值周年变化及其影响因素分析

陈玥, 宫亮, 金丹丹, 张鑫, 李波, 邹晓锦, 隋世江, 叶鑫, 刘艳

Annual Variation of Nitrogen Fertilizer Threshold for Optimal Yield of Northern Japonica Rice and Its Influencing Factors Analysis

Chen Yue, Gong Liang, Jin Dandan, Zhang Xin, Li Bo, Zou Xiaojin, Sui Shijiang, Ye Xin, Liu Yan

表2 2011-2018年推荐施氮量条件下的氮表观平衡

Table 2 N apparent balance at recommended N application rates from 2011 to 2018 kg/hm2

年份 Year 推荐施氮量 Recommended N application 植株吸氮量 N uptake by plants 土壤无机氮含量 Soil mineral N 无机氮表观损失量 Apparent loss amount of inorganic N 降雨携氮量 N in precipitation 灌溉携氮量 N in irrigation 2011 211.64±6.35 195.49±2.10 84.98±3.03 164.28±4.15 13.51±0.08 21.39±0.21 2012 205.02±6.00 189.11±2.14 84.55±2.85 178.88±4.66 16.68±0.17 18.28±0.18 2013 218.84±5.99 191.51±2.16 91.79±3.05 179.45±4.65 7.04±0.04 17.61±0.13 2014 207.39±4.29 187.37±1.69 85.62±2.09 167.82±3.30 8.50±0.05 17.68±0.22 2015 216.65±6.40 192.12±2.50 93.54±3.44 178.16±4.84 9.27±0.07 20.94±0.21 2016 218.07±3.97 192.24±1.60 79.01±0.90 181.92±2.99 16.83±0.08 18.00±0.27 2017 220.36±5.48 196.43+2.20 80.83±1.28 179.89±4.18 10.54±0.01 20.00±0.19 2018 220.61±3.91 192.51±1.10 80.81±0.85 181.06±2.98 11.52±0.01 19.05±0.14