行距与氮肥或甲哌鎓化控对棉花冠层结构、温度和相对湿度的影响

颜为, 李芳军, 徐东永, 杜明伟, 田晓莉, 李召虎

Effects of row spacings and nitrogen or mepiquat chloride application on canopy architecture, temperature and relative humity in cotton

YAN Wei, LI Fang-Jun, XU Dong-Yong, DU Ming-Wei, TIAN Xiao-Li, LI Zhao-Hu

表7 行距和甲哌鎓对2016-2018年棉花不同生育时期透光率(DIFN)的影响

Table 7 Effect of row spacing and mepiquat chloride on DIFN during 2016-2018 growing seasons in cotton (%)

处理 Treatment 2016 2017 2018 蕾期 Squar- ing stage (6/23) 初花期 Early blooming stage (7/1) 盛花期 Full blooming stage (7/15) 盛铃期 Boll-fill- ing stage (8/1) 吐絮期 Boll-open-ing stage (9/18) 蕾期 Squaring stage (6/18) 初花期 Early blooming stage (7/3) 盛花期 Full blooming stage (7/14) 盛铃期 Boll-fill- ing stage (8/1) 吐絮期 Boll- opening stage (9/20) 初花期 Early blooming stage (6/29) 盛花期 Full blooming stage (7/12) 盛铃期 Boll-fill- ing stage (7/29) 吐絮期 Boll-open-ing stage (9/12) 行距 Row spacing (R) (cm) 76 36.7 a 24.5 a 10.5 a 4.1 a 7.5 a 51.8 a 16.8 a 5.8 a 2.3 a 16.4 a 21.4 b 11.6 b 3.2 b 11.0 a 92 35.3 a 22.6 a 8.4 a 3.0 a 5.6 a 42.8 b 15.4 a 6.0 a 2.1 a 13.0 b 32.2 a 18.6 a 10.5 a 12.0 a 102 38.4 a 21.1 a 9.8 a 2.3 a 4.2 a 43.8 b 16.6 a 6.0 a 1.8 a 13.5 b 29.2 a 22.8 a 9.7 a 13.6 a 甲哌鎓 Mepiquat chloride (DPC) (g hm-2) 0 31.7 b 16.3 b 4.0 b 0.9 b 2.8 b 43.4 a 12.7 a 3.2 b 1.4 a 9.9 b 26.2 a 15.3 a 4.2 b 10.6 a 140 34.8 a 20.8 a 10.7 a 3.3 a 6.1 a 44.8 a 15.9 a 5.7 a 1.9 a 14.9 a 26.7 a 17.2 a 7.6 a 12.0 a 281 36.0 a 22.6 a 11.3 a 3.5 a 6.5 a 48.1 a 17.6 a 7.9 a 2.6 a 16.1 a 29.2 a 19.2 a 9.8 a 13.7 a 394 39.3 a 24.6 a 12.3 a 4.7 a 7.7 a 48.3 a 18.7 a 6.9 a 2.4 a 16.3 a 28.4 a 19.0 a 9.7 a 12.4 a 变异来源 Source of variation R 0.105 0.216 0.661 0.293 0.058 0.010 0.856 0.967 0.815 0.046 0.000 0.000 0.000 0.260 DPC 0.034 0.023 0.014 0.042 0.025 0.396 0.238 0.006 0.400 0.001 0.339 0.086 0.002 0.411 R×DPC 0.915 0.813 0.802 0.639 0.563 0.850 0.829 0.916 0.126 0.902 0.301 0.868 0.820 0.993