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3 DPC+剂量对不同施氮量下棉花ETR的影响

Table 3 Effects of chemical capping on cotton electron transfer rate 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 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 * * *