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5 行距和甲哌鎓对2016-2018年棉花不同生育时期叶倾角(MTA)的影响

Table 5 Effect of row spacing and mepiquat chloride on MTA during 2016-2018 growing seasons in cotton

处理 Treat- ment 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- opening stage (9/12) 行距 Row spacing (R) (cm) 76 41.1 a 41.4 a 45.2 b 45.9 a 43.3 a 46.2 a 51.4 a 47.2 a 41.8 b 44.4 a 49.3 a 51.5 b 47.5 b 48.4 a 92 41.8 a 41.2 a 47.6 ab 45.4 a 42.6 a 34.9 b 51.4 a 47.4 a 45.1 a 43.7 a 49.2 a 58.2 a 51.8 a 46.2 a 102 41.5 a 40.0 a 48.4 a 45.2 a 42.9 a 36.6 b 52.3 a 48.5 a 45.7 a 45.4 a 48.5 a 54.3 a 53.8 a 47.6 a 甲哌鎓 Mepiquat chloride (DPC) (g hm-2) 0 41.7 a 41.6 a 44.3 b 43.3 b 40.5 b 39.3 a 51.4 a 46.8 a 43.6 a 43.6 a 52.1 a 54.6 a 47.9 b 44.0 a 140 41.9 a 39.7 a 47.0 a 46.3 a 44.5 a 39.5 a 50.8 a 47.8 a 44.1 a 46.2 a 47.8 a 55.1 a 51.7 a 46.6 a 281 41.7 a 41.8 a 47.7 a 45.6 a 42.9 a 40.5 a 50.9 a 48.8 a 45.1 a 46.8 a 48.7 a 54.0 a 51.4 a 51.1 a 394 40.5 a 40.3 a 49.3 a 46.7 a 43.8 a 37.7 a 53.8 a 47.4 a 44.0 a 46.8 a 47.4 a 55.0 a 53.2 a 47.9 a 变异来源 Source of variation R 0.866 0.609 0.009 0.798 0.808 0.000 0.881 0.653 0.000 0.107 0.914 0.000 0.001 0.712 DPC 0.716 0.562 0.002 0.023 0.013 0.816 0.585 0.691 0.499 0.161 0.169 0.897 0.036 0.147 R×DPC 0.094 0.708 0.717 0.193 0.268 0.120 0.829 0.916 0.126 0.902 0.937 0.445 0.761 0.870