施氮量对迟播油菜氮素利用和产量品质的影响

李小勇,顾炽明,刘康,廖星,黄威,杨志远,秦璐

Effects of Nitrogen Application Rate on Nitrogen Use Efficiency, Yield and Quality of Late Sowing Rapeseed

LI XiaoYong,GU ChiMing,LIU Kang,LIAO Xing,HUANG Wei,YANG ZhiYuan,QIN Lu

表3 播期和施氮量对油菜各器官氮含量和氮积累量的影响

Table 3 Effects of sowing dates and nitrogen rates on nitrogen content and uptake

试验点 Trial site 播期 Sowing date 施氮量 Nitrogen rate 根 Root 茎 Stem 角果壳 Pod shell 籽粒 Grain 氮含量 N content (%) 氮积累量 N uptake（kg·hm-2） 氮含量 N content (%) 氮积累量 N uptake（kg·hm-2） 氮含量 N content (%) 氮积累量 N uptake（kg·hm-2） 氮含量 N content (%) 氮积累量 N uptake（kg·hm-2） 应城 Yingcheng S1 N0 0.60cd 3.63cd 0.39d 4.28g 0.59c 7.47f 3.21c 65.96e N1 0.65bcd 4.25c 0.58cd 26.30e 0.65bc 15.65de 3.45c 102.27d N2 0.82bc 6.76b 0.77bc 40.15d 0.75bc 21.21c 4.07b 149.67bc N3 1.37a 11.46a 1.19a 66.16b 1.21a 34.52b 4.61a 176.18a S2 N0 0.50d 2.83d 0.47cd 10.93f 0.52c 11.22ef 3.36c 57.80e N1 0.59cd 3.50cd 0.60cd 35.43d 0.66bc 16.84cd 3.58c 88.23d N2 0.66bcd 4.24c 0.94ab 57.73c 0.84b 31.78b 4.12b 132.55c N3 0.84b 6.55b 1.22a 85.92a 1.18a 47.00a 4.94a 161.35ab 黄冈 Huanggang S1 N0 0.67de 3.73de 0.52d 8.91g 0.73c 7.79f 3.31e 67.48ef N1 0.87c 6.27c 0.74c 30.81e 0.94b 23.94d 3.62d 88.22d N2 1.10b 9.47b 1.06b 53.83c 1.00b 27.94d 4.17c 134.56b N3 1.51a 13.45a 1.23a 71.04b 1.44a 46.02b 4.72b 167.26a S2 N0 0.57e 2.93e 0.58d 16.04f 0.79c 14.94e 3.46de 52.87f N1 0.74d 4.78d 0.76c 36.53d 0.96b 26.16d 3.68d 71.68de N2 1.05b 8.36b 1.07b 68.87b 1.01b 33.63c 4.22c 114.06c N3 1.08b 9.09b 1.27a 92.54a 1.46a 57.07a 5.04a 142.00b 方差分析 Variance analysis S ** ** NS ** NS ** ** ** N ** ** ** ** ** ** ** ** S×N ** ** NS ** NS ** NS NS