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4 密度和株行距配置对玉米雌穗分化特性的影响

Table 4 Effects of density and row spacing on ear characteristics of maize

年份 Year 密度 Density 行距 Row spacing 分化的小花总数 No. of total florets 吐丝小花数 No. of silked florets 正常受精小花数No. of fertilized florets 退化小花数No. of degenerated florets 败育花数 No. of abortive florets 花败育率 Abortion rate of floret (%) 单株果穗受精率Fertilization rate per plant (%) 2017 A1 B1 925.67 a 877.00 a 809.00 a 48.67 b 116.67 b 12.60 b 92.24 a B2 900.33 b 839.00 b 767.67 b 61.33 b 132.67 b 14.73 b 91.54 ab B3 929.00 a 875.00 a 805.67 a 54.00 b 123.33 b 13.26 b 92.08 a B4 927.00 a 873.00 a 795.00 a 54.00 b 132.00 b 14.24 b 91.08 ab B5 930.00 a 825.67 b 745.00 c 104.33 a 185.00 a 19.89 a 90.26 b 平均值Average 922.40 A 857.93 A 784.47 A 64.47 A 137.93 A 14.94 A 91.44 A A2 B1 898.00 b 832.67 ab 762.33 a 65.33 b 135.67 c 15.11 c 91.56 a B2 881.33 c 811.67 b 741.33 a 69.67 b 140.00 c 15.88 c 91.31 a B3 904.00 ab 837.00 a 761.00 a 67.00 b 143.00 c 15.81 c 90.92 a B4 901.33 ab 822.00 ab 714.00 b 79.33 b 187.33 b 20.82 b 86.84 b B5 918.67 a 789.00 c 673.33 c 129.67 a 245.33 a 26.67 a 85.39 b 平均值Average 900.67 A 818.47 A 730.40 A 82.20 A 170.27 A 18.86 A 89.20 A F值F-value 密度Density(D) 15.64 45.19* 21.88* 54.30* 60.49* 91.34* 1.11 行距 Row spacing (R) 6.65** 13.68** 21.52** 17.77** 19.54** 18.18** 13.12** 密度×行距(D×R) 0.47 0.60 2.75 0.41 2.10 2.08 4.62* 2018 A1 B1 910.83 a 849.17 b 776.67 a 61.67 a 134.17 c 14.73 c 91.52 a B2 878.50 c 842.67 b 748.00 b 35.83 c 130.50 c 14.84 c 88.85 b B3 919.17 a 883.00 a 745.67 b 36.17 c 173.50 a 18.83 a 84.42 c B4 893.00 b 837.50 b 739.00 b 55.50 b 154.00 b 17.19 b 88.31 b 平均值Average 900.38 A 853.08 A 752.33 A 47.29 B 148.04 B 16.40 C 88.28 A A2 B1 857.83 b 825.83 ab 715.33 a 32.00 c 142.50 c 16.61 c 86.69 a B2 855.67 b 804.33 b 687.33 b 51.33 b 168.33 b 19.67 b 85.47 a B3 901.17 a 844.00 a 702.17 ab 57.17 a 199.00 a 21.97 a 83.20 b B4 874.83 b 816.50 b 670.17 c 58.33 a 204.67 a 23.40 a 82.29 b 平均值Average 872.38 B 822.67 B 693.75 B 49.71 AB 178.63 A 20.41 B 84.41 B A3 B1 845.33 a 783.50 a 650.33 a 61.83 a 195.00 a 23.01 a 82.97 a B2 807.50 b 749.00 b 617.33 b 58.50 a 190.17 a 23.47 a 82.40 a B3 855.33 a 794.83 a 659.17 a 60.50 a 196.17 a 22.93 a 82.95 a B4 862.67 a 801.33 a 667.33 a 61.33 a 195.33 a 22.62 a 83.28 a 平均值Average 842.71 C 782.17 C 648.54 C 60.54 A 194.17 A 23.01 A 82.90 B F值F-value 密度 Density(D) 67.38** 75.72** 190.38** 14.84* 39.14** 156.19** 49.98** 行距 Row spacing(R) 15.87** 9.31** 9.41** 12.28** 17.30** 20.11** 10.30** 密度×行距(D×R) 2.63 1.92 5.95** 32.37** 5.47** 9.30** 4.65**