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2 行距和施氮量对2016-2018年棉花不同生育时期叶面积指数(LAI)的影响

Table 2 Effect of row spacing and nitrogen rate on LAI 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 1.3 a 2.1 a 3.7 a 5.5 a 3.6 a 0.9 b 2.2 a 4.6 a 5.6 a 2.1 a 1.4 a 2.1 a 3.3 a 2.7 a 92 1.2 a 2.1 a 3.9 a 5.9 a 3.9 a 1.2 a 2.2 a 4.7 a 6.1 a 2.2 a 1.5 a 1.9 ab 3.0 ab 2.9 a 102 1.3 a 2.0 a 3.6 a 5.3 a 3.5 a 1.2 a 2.3 a 4.6 a 5.5 a 2.1 a 1.4 a 1.6 b 2.4 b 3.3 a 氮肥 Nitrogen (N) (kg hm-2) 0 1.3 a 2.1 a 3.7 a 5.5 a 3.5 b 1.0 a 2.2 a 4.4 a 5.1 b 1.9 b 1.3 a 1.8 a 2.8 a 2.9 a 105 1.3 a 2.0 a 3.7 a 5.7 a 3.8 a 1.1 a 2.3 a 4.8 a 6.0 a 2.2 a 1.5 a 1.9 a 2.9 a 2.8 a 210 1.3 a 2.1 a 3.8 a 5.5 a 3.7 ab 1.1 a 2.3 a 4.7 a 6.2 a 2.2 a 1.5 a 2.0 a 3.0 a 3.3 a 变异来源 Source of variation R 0.468 0.498 0.387 0.110 0.217 0.004 0.962 0.932 0.242 0.825 0.774 0.000 0.000 0.055 N 0.806 0.709 0.954 0.811 0.036 0.719 0.731 0.412 0.014 0.015 0.412 0.081 0.228 0.070 R×N 0.901 0.305 0.836 0.737 0.985 0.699 0.837 0.892 0.863 0.836 0.893 0.619 0.714 0.838