DPC+化学封顶对不同施氮量下棉花叶片光合生理特性的影响

时晓娟, 韩焕勇, 王方永, 郝先哲, 高宏云, 罗宏海

Effects of chemical topping with fortified mepiquat chloride on photosynthetic characteristics of cotton leaves under different nitrogen rates

Xiao-Juan SHI, Huan-Yong HAN, Fang-Yong WANG, Xian-Zhe HAO, Hong-Yun GAO, Hong-Hai LUO

表4 DPC+剂量对不同施氮量下棉花NPQ的影响

Table 4 Effects of chemical capping on cotton non-photochemical quenching under different nitrogen rates

处理 Treatment 2013 2014 盛花期 Full flowering 盛铃期 Full boll 吐絮期 Boll opening 盛花期 Full flowering 盛铃期 Full boll 吐絮期 Boll opening N1 112.09 b 106.81 a 97.03 a 101.04 b 65.97 b 43.58 b N2 143.09 a 112.14 a 105.68 a 126.81 a 75.57 a 56.89 a N3 127.59 ab 105.97 a 99.25 a 90.38 c 66.87 b 29.16 c P1 128.25 a 104.69 a 100.76 a 106.24 b 72.16 b 42.74 a P2 131.40 a 115.22 a 105.99 a 117.34 a 80.09 a 43.85 a P3 135.10 a 113.61 a 103.08 a 116.19 a 70.02 b 42.95 a P0 115.60 a 99.71 a 92.79 a 84.54 c 55.61 c 43.30 a N1P0 104.98a 94.04 a 91.18 a 80.02 e 56.36 hi 37.98 fg N1P1 126.54 a 112.10 a 104.41 a 115.28 bc 73.01 de 57.70 b N1P2 112.45 a 111.15 a 102.10 a 105.79 cd 67.89 def 43.40 de N1P3 104.41 a 106.76 a 90.44 a 103.08 d 66.61 ef 35.26 g 处理 Treatment 2013 2014 盛花期 Full flowering 盛铃期 Full boll 吐絮期 Boll opening 盛花期 Full flowering 盛铃期 Full boll 吐絮期 Boll opening N2P0 120.29 a 103.01 a 96.47 a 100.36 d 58.92 gh 51.24 c N2P1 143.82 a 112.36 a 106.52 a 123.42 b 79.42 bc 61.03 b N2P2 159.12 a 120.85 a 113.79 a 143.76 a 89.66 a 69.17 a N2P3 149.12 a 113.68 a 105.92 a 139.70 a 74.29 cd 46.11 d N3P0 116.68 a 102.09 a 90.73 a 73.24 e 51.54 i 40.69 ef N3P1 114.39 a 96.98 a 92.75 a 80.02 e 64.05 fg 9.49 i N3P2 122.65 a 104.42 a 102.06 a 102.47 d 67.89 b 18.99 h N3P3 151.76 a 120.39 a 112.87 a 105.79 cd 69.17 def 47.47 cd N ns ns ns * * * P ns ns ns * * ns N×P ns ns ns * * *