氮肥用量及运筹对优良食味粳稻越光产量形成及根系形态的影响

许芸菲, 贾浩杨, 李叶彤, 曹瑞, 高梓淇, 赵喆, 陈立强, 梁潇

Effects of Nitrogen Application Rate and Management on Yield Formation and Root Morphology of High-Quality Japonica Rice Cultivar Koshihikari

Xu Yunfei, Jia Haoyang, Li Yetong, Cao Rui, Gao Ziqi, Zhao Zhe, Chen Liqiang, Liang Xiao

表6 不同施肥方式及施氮量对越光根系形态的影响

Table 6 Effects of different fertilization methods and nitrogen application rates on root morphology of Koshihikari

时期 Stage 施肥方式 Fertilization method 施氮量 Nitrogen application rate 最大根长 Maximum root length (cm) 总根长 Total root length (cm) 根表面积 Root surface area (cm2) 根系总体积 Root volume (m3) 齐穗期Full heading stage TFM N0 34.27±0.46c 1042.00±10.02d 597.00±5.13e 13.21±0.22e N45 41.30±0.72b 1268.67±17.15c 743.00±7.00d 14.07±0.15d N90 47.23±0.35a 1475.33±17.07a 849.00±6.56b 16.53±0.28b N135 45.70±0.29a 1346.67±13.54b 889.33±8.11a 17.60±0.35a N180 41.63±0.26b 1284.67±8.01bc 791.33±5.49c 15.13±0.09c 平均 42.03±1.22b 1283.47±38.02b 773.93±27.24b 15.31±0.44b SEM N0 34.23±0.19c 1052.67±27.42e 601.33±6.17e 13.02±0.15e N45 44.67±0.26b 1351.00±16.64d 864.67±3.84d 16.30±0.23d N90 52.40±0.55a 1785.33±31.65b 922.00±10.60b 18.27±0.18b N135 51.03±3.73a 2094.00±39.80a 1021.33±7.45a 20.43±0.45a N180 43.33±0.41b 1605.00±35.09c 895.00±4.73c 17.13±0.15c 平均 45.13±1.85a 1577.60±96.15a 860.87±37.51a 17.03±0.66a FF 9.15* 417.37** 416.58** 113.82** FN 28.50** 275.48** 795.26** 152.72** FF×N 1.61ns 79.97** 29.03** 9.97** 灌浆期Grain filling stage TFM N0 31.30±0.38e 802.13±6.79d 464.00±8.14d 9.31±0.53d N45 35.63±0.26d 965.00±4.04c 555.00±11.79c 12.10±0.23c N90 42.97±0.67a 1310.67±27.94b 647.33±15.06b 14.13±0.24b N135 41.43±0.64b 1551.67±61.23a 768.00±10.58a 16.13±0.34a N180 37.80±0.21c 1057.67±23.39c 583.00±4.73c 12.23±0.24c 平均 37.83±1.13b 1137.43±71.75b 603.47±27.35b 12.78±0.62b SEM N0 31.73±0.34e 800.67±4.63e 480.00±10.44d 9.50±0.19d N45 42.30±0.46c 996.33±16.90d 614.33±5.70c 13.37±0.38c N90 46.97±0.27b 1484.33±32.20b 809.67±12.12b 15.70±0.29b N135 51.40±0.32a 1891.33±17.17a 964.33±8.11a 17.86±0.22a N180 38.47±0.93d 1216.67±76.90c 639.33±22.81c 14.21±0.17c 平均 42.17±1.83a 1277.87±103.15a 701.53±45.21a 14.13±0.75a FF 184.58** 40.39** 161.91** 48.16** FN 278.16** 213.64** 304.12** 168.57** FF×N 32.21** 3.12ns 20.00** 2.57ns