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1 播期和施氮量对油菜产量及产量构成的影响

Table 1 Effects of sowing dates and nitrogen rates on yield and yield components of rapeseed

播期 Sowing date 施氮量 Nitrogen rate 应城 Yingcheng 黄冈 Huanggang 单株角果数 Effective pods per plant 每角果粒数 Seeds per pod 千粒重1000-seed weight (g) 单株产量 Yield per plant (g) 实际产量 Yield (kg·hm-2) 单株角果数 Effective pods per plant 每角果粒数 Seeds per pod 千粒重1000-seed weight (g) 单株产量 Yield per plant (g) 实际产量 Yield (kg·hm-2) S1 N0 60.7c 17.6c 4.29c 4.57e 2058.6e 67.3b 17.2c 3.91d 4.53e 2039.4e N1 72.7b 20.4b 4.45c 6.59c 2964.2c 69.5b 19.1b 4.09c 5.42d 2438.1d N2 78.4a 21.2b 4.92ab 8.17a 3674.3a 82.8a 19.5ab 4.45b 7.16b 3223.1b N3 78.9a 21.2b 5.07a 8.48a 3818.7a 85.0a 19.0b 4.87a 7.88a 3546.2a S2 N0 39.8e 21.7b 4.43c 3.82f 1719.6f 43.5e 18.9b 4.13c 3.39f 1526.1f N1 48.8d 23.8a 4.72b 5.48d 2465.8d 49.7d 20.2ab 4.31b 4.33e 1947.0e N2 59.2c 24.2a 4.98a 7.14bc 3215.0b 61.7c 20.4ab 4.78a 6.00c 2699.2c N3 63.0c 23.0a 5.00a 7.26b 3265.9b 62.8c 21.0a 4.75a 6.26c 2815.9c 方差分析Variance analysis S ** ** NS ** ** ** ** ** ** ** N ** ** ** ** ** ** ** ** ** ** S×N NS NS NS NS NS NS NS ** NS NS