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1 DPC+剂量对不同施氮量下棉花叶面积(m2 hm-2)的影响

Table 1 Effects of chemical capping on cotton leaf area (m2 hm-2) index 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 22608 c 38656 c 36204 c 22207 c 38556 c 36604 c N2 27345 b 41950 b 38904 b 26945 b 41900 b 39004 b N3 28409 a 43090 a 40113 a 28298 a 43006 a 40127 a P1 26635 a 42571 a 39506 a 26280 a 42238 a 39650 a P2 26679 a 41392 ab 38495 ab 26398 a 41170 a 38379 b P3 25022 b 39923 c 37555 b 24733 b 39795 b 37781 b P0 26146 a 41041 bc 38072 b 25857 a 41413 a 38502 b N1P0 22399 f 38269 bc 36059 e 21997 fg 38169 fg 36461 de N1P1 23900 e 39967 b 37356 de 23498 e 39766 def 37959 cd N1P2 22768 ef 39074 bc 36091 e 22371 ef 38776 efg 36489 de N1P3 21365 f 37314 c 35307 e 20964 g 37514 g 35508 e N2P0 27337 bcd 42502 a 39209 abcd 26938 cd 42003 abc 38611 bc N2P1 26973 cd 43296 a 39713 abc 26575 cd 43196 ab 39912 abc N2P2 28800 ab 42247 a 39237 abcd 28399 ab 42047abc 38936 bc N2P3 26269 d 39753 b 37456 cde 25870 d 40354 cde 38556 bc N3P0 28901 ab 42351 a 38947 bcd 28635 ab 44069 a 40435 ab 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 N3P1 29033 a 44451 a 41448 a 28766 a 43750 a 41081 a N3P2 28469 abc 42854 a 40157 ab 28425 ab 42687 ab 39712 abc N3P3 27747 bcd 42702 a 39902 ab 27366 bc 41517 bcd 39280 abc N * * * * * * P * * * * * * N×P * ns ns * ns ns