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6 行距和施氮量对2016-2018年棉花不同生育时期透光率(DIFN)的影响

Table 6 Effect of row spacing and nitrogen rate on DIFN during 2016-2018 growing seasons in cotton

处理Treatment 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-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 35.8 a 19.8 a 6.5 a 1.7 a 6.3 a 50.0 a 18.4 a 3.4 a 1.6 a 19.7 a 31.9 a 19.7 b 9.4 b 14.1 b 92 37.9 a 19.6 a 5.5 a 1.0 a 5.9 a 40.2 b 18.6 a 3.4 a 1.2 a 19.3 a 32.6 a 22.1 a 11.8 a 15.0 a 102 34.9 a 20.3 a 7.2 a 1.8 a 6.6 a 40.0 b 19.3 a 3.9 a 1.8 a 20.4 a 34.4 a 29.3 a 16.4 a 15.7 a 氮肥 Nitrogen (N) (kg hm-2) 0 35.3 a 19.1 a 6.2 a 1.6 a 7.1 a 44.4 a 20.1 a 4.5 a 2.5 a 23.3 a 33.8 a 25.2 a 14.0 a 12.0 a 105 37.1 a 20.5 a 6.8 a 1.5 a 5.3 a 43.4 a 18.4 a 3.1 a 1.1 b 18.2 b 32.6 a 23.6 a 12.0 a 13.6 a 210 36.2 a 20.1 a 6.0 a 1.4 a 5.5 a 42.4 a 17.8 a 3.1 a 1.0 b 17.8 b 32.5 a 22.3 a 11.5 a 9.2 a 变异来源 Source of variation R 0.417 0.417 0.299 0.059 0.075 0.004 0.894 0.842 0.424 0.826 0.669 0.000 0.000 0.048 N 0.736 0.442 0.735 0.685 0.053 0.764 0.517 0.254 0.003 0.008 0.885 0.164 0.192 0.117 R×N 0.844 0.162 0.726 0.948 0.980 0.682 0.461 0.588 0.666 0.786 0.478 0.656 0.693 0.591