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3 行距和甲哌鎓对2016-2018年棉花不同生育时期叶面积指数(LAI)的影响

Table 3 Effect of row spacing and mepiquat chloride on LAI during 2016-2018 growing seasons in cotton

处理 Treat- ment 2016 2017 2018 蕾期 Squaring stage (6/23) 初花期 Early blooming stage (7/1) 盛花期 Full blooming stage (7/15) 盛铃期 Boll- filling stage (8/1) 吐絮期 Boll- opening 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- filling 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- filling stage (7/29) 吐絮期 Boll- opening stage (9/12) 行距 Row spacing (R) (cm) 76 1.3 a 2.0 a 3.3 a 4.9 a 3.6 b 0.9 b 2.4 a 4.0 a 5.3 a 2.4 a 2.0 a 2.9 a 4.7 a 3.1 a 92 1.5 a 2.3 a 3.7 a 5.2 a 4.0 a 1.1 a 2.4 a 4.0 a 5.7 a 2.6 a 1.6 b 2.3 b 3.3 b 2.8 ab 102 1.2 a 2.0 a 3.4 a 5.2 a 4.2 a 1.1 a 2.5 a 4.0 a 5.5 a 2.7 a 1.5 b 2.1 b 3.1 b 2.5 b 甲派鎓 Mepiquat chloride (DPC) (g hm-2) 0 1.5 a 2.4 a 4.4 a 6.1 a 4.7 a 1.1 a 2.8 a 4.7 a 6.0 a 3.0 a 1.8 a 2.6 a 4.5 a 2.8 a 140 1.4 ab 2.0 b 3.2 b 4.9 b 3.8 b 1.0 a 2.4 a 4.0 b 5.5 a 2.5 b 1.7 a 2.4 a 3.8 ab 2.9 a 281 1.3 ab 2.0 b 3.1 b 4.8 b 3.6 b 0.9 a 2.2 a 3.6 b 5.2 a 2.4 b 1.6 a 2.3 a 3.3 b 2.7 a 394 1.2 b 2.0 b 3.1 b 4.6 b 3.6 b 0.9 a 2.3 a 3.6 b 5.2 a 2.4 b 1.6 a 2.3 a 3.3 b 2.9 a 变异来源 Source of variation R 0.108 0.111 0.466 0.571 0.040 0.022 0.831 0.976 0.429 0.116 0.000 0.000 0.000 0.009 DPC 0.034 0.035 0.001 0.002 0.001 0.390 0.124 0.002 0.104 0.001 0.435 0.117 0.000 0.789 R×DPC 0.928 0.761 0.794 0.518 0.496 0.885 0.968 0.843 0.225 0.993 0.492 0.939 0.654 0.857