密度和株行距配置对川中丘区夏玉米群体光分布及雌雄穗分化的影响

金容,李钟,杨云,周芳,杜伦静,李小龙,孔凡磊,袁继超

Effects of density and row spacing on population light distribution and male and female spike differentiation of summer maize in hilly area of central Sichuan

Rong JIN,Zhong LI,Yun YANG,Fang ZHOU,Lun-Jing DU,Xiao-Long LI,Fan-Lei KONG,Ji-Chao YUAN

表5 密度和株行距配置对玉米产量及其构成的影响

Table 5 Effects of density and row spacing on maize yield and its composition

年份Year 密度Density 行距 Row spacing 穗长 Ear length (cm) 秃尖 Bald length (cm) 穗粗 Ear diameter (cm) 空秆率Empty rate (%) 倒伏率Lodging rate (%) 行粒数 No. of kernels per line 穗粒数 No. of kernels per ear 百粒重 100-grain weight (g) 有效穗数 Effective number of spikes 产量 Yield (kg hm-2) 2017 A1 B1 18.12 a 0.97 b 4.86 a 0.33 a 3.72 a 43.06 a 706.52 a 26.47 a 45833.34 a 7080.28 a B2 17.63 ab 1.23 ab 4.54 c 0.00 a 7.78 a 41.17 b 647.75 b 26.80 a 45061.73 a 6968.19 a B3 17.97 a 1.20 ab 4.69 b 0.00 a 3.96 a 41.94 ab 698.76 a 26.47 a 43865.74 a 6889.22 ab B4 17.50 b 1.03 b 4.54 c 0.00 a 4.32 a 41.84 ab 692.21 a 26.16 a 42939.82 ab 6542.59 bc B5 18.02 a 1.65 a 4.63 b 0.00 a 2.95 a 41.90 ab 688.73 a 26.28 a 40277.78 b 6494.62 c 平均值Average 17.85 A 1.22 A 4.65 A 0.07 A 4.55 B 41.98 A 686.80 A 26.44 A 43595.68 B 6794.98 A A2 B1 16.62 ab 1.23 b 4.51 a 0.07 b 5.96 b 40.41 a 651.69 a 23.35 a 66203.70 a 8617.63 a B2 16.75 a 1.58 ab 4.41 b 0.68 a 13.06 a 39.07 ab 642.70 a 21.95 b 67746.92 a 8425.19 a B3 16.80 a 1.48 ab 4.51 a 0.90 a 7.73 b 39.35 ab 650.86 a 23.10 a 62384.26 b 8190.65 a B4 16.20 b 1.52 ab 4.40 b 0.60 a 13.02 a 38.27 b 621.90 a 23.73 a 60648.15 b 7639.54 b B5 17.02 a 1.75 a 4.46 ab 0.00 b 6.46 b 39.14 ab 645.86 a 23.03 a 56388.89 c 7390.68 b 平均值 Average 16.68 A 1.51 A 4.46 A 0.45 A 9.25 A 39.25 A 642.60 B 23.03 A 62674.38 A 8052.74 A F值 密度Density (D) 26.18* 34.59* 16.88 4.47 108.54** 25.25* 169.86** 78.01* 202.51** 49.04* F-value 行距 Row spacing (R) 3.41* 2.89 15.64** 1.34 3.68* 2.55 2.16 0.92 12.45** 9.57** 密度×行距 D×R 0.76 0.29 3.92* 2.80 0.89 0.39 1.68 3.43* 1.82 1.08 2018 A1 B1 17.59 b 1.89 a 5.07 b 3.11 a 3.15 a 37.39 ab 640.73 a 29.95 a 46969.70 a 7475.55 a B2 18.04 a 2.01 a 5.13 a 3.59 a 3.94 a 36.60 c 623.44 b 29.49 a 45286.20 a 7128.53 b B3 18.01 a 1.91 a 5.07 b 2.43 a 1.64 a 37.99 a 647.04 a 29.66 a 44570.71 a 7185.98 b B4 17.98 a 2.11 a 5.07 b 1.86 a 1.87 a 36.93 bc 627.82 b 29.92 a 45959.60 a 7046.00 b 平均值 Average 17.90 A 1.98 A 5.08 A 2.75 A 2.65 A 37.23 A 634.76 A 29.75 A 45696.55 A 7209.02 B A2 B1 16.81 ab 2.11 ab 4.96 a 2.28 a 6.90 a 32.96 a 561.20 a 29.59 a 63973.06 a 8783.38 a B2 17.00 a 2.35 a 4.96 a 3.91 a 8.38 a 31.45 b 531.64 b 29.04 a 61952.86 a 8351.56 b B3 16.62 b 1.90 bd 5.00 a 1.66 a 11.92 a 32.87 a 559.99 a 29.41 a 57449.49 b 7994.91 c B4 16.71 b 2.10 bc 4.98 a 3.39 a 14.41 a 32.66 a 557.33 a 29.11 a 60732.32 a 8200.29 b 平均值 Average 16.79 AB 2.12 A 4.97 AB 2.81 A 10.40 A 32.49 B 552.54 B 29.28 AB 61026.94 A 8332.54 A A3 B1 15.73 ab 2.36 a 4.85 ab 18.03 a 37.59 a 26.67 b 451.65 bc 28.36 a 63131.31 b 7090.71 b B2 15.56 b 2.43 a 4.83 b 18.34 a 43.88 a 26.65 b 449.94 c 28.81 a 64141.41 ab 6888.06 b B3 15.80 ab 2.08 b 4.87 ab 14.01 a 33.94 ab 27.57 b 468.68 b 28.94 a 63510.10 b 7094.03 b B4 16.03 a 2.28 ab 4.89 a 7.07 b 26.16 b 28.97 a 492.50 a 28.99 a 68308.08 a 7665.79 a 平均值 Average 15.78 B 2.29 A 4.86 B 14.36 A 35.39 A 27.46 C 465.69 C 28.78 B 64772.73 A 7184.65 B F值 密度Density (D) 21.30** 8.80* 16.49* 4.71 8.30* 47.18** 48.49** 11.02* 7.78* 61.72** F-value 行距 Row spacing (R) 2.09 4.35* 0.67 2.41 0.53 5.93** 9.47** 0.46 2.55 7.28** 密度×行距 D×R 4.31** 0.96 1.64 1.71 1.39 2.70* 4.08** 1.02 1.72 7.59**