氮肥对非充分灌溉下棉花花铃期光合特性及产量的补偿作用
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石洪亮,严青青,张巨松,李春艳,窦海涛
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Compensation Effect of Nitrogen Fertilizer on Photosynthetic Characteristics and Yield during Cotton Flowering Boll-setting Stage under Non-sufficient Drip Irrigation
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Hong-Liang SHI,Qing-Qing YAN,Ju-Song ZHANG,Chun-Yan LI,Hai-Tao DOU
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表4 棉花花铃期功能叶(倒三叶)Tr的比较
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Table 4 Comparison of functional leaf (third leaf from the top) Tr during cotton flowering and boll-setting stage (μmol m-2 s-1)
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灌溉量
Drip irrigation
amount | 氮肥处理
N treatment | 2015 | 2016 | | 初花期 FP | 盛花期 FF | 盛铃期 FB | 吐絮期 OB | 初花期 FP | 盛花期 FF | 盛铃期 FB | 吐絮期 OB | | 2800 m3 hm-2 | N0 | 5.2 d | 5.7 d | 5.5 d | 3.1 d | 4.6 d | 5.1 c | 4.4 e | 1.8 d | | N150 | 5.5 cd | 6.1 d | 5.9 cd | 3.4 cd | 5.4 c | 5.9 bc | 5.2 d | 2.2 de | | N300 | 6.2 ab | 7.3 ab | 7.1 ab | 4.8 ab | 6.2 ab | 7.0 a | 6.9 ab | 3.2 ab | | N450 | 5.9 abc | 6.8 bc | 6.8 b | 4.5 b | 5.6 bc | 6.5 ab | 6.1 c | 2.6 cd | | 3800 m3 hm-2 | N0 | 5.6 bcd | 6.2 d | 6.0 c | 3.5 cd | 5.8 abc | 5.9 bc | 5.9 cd | 2.5 cd | | N150 | 5.9 abc | 6.3 cd | 6.2 c | 3.7 c | 6.1 ab | 6.3 ab | 6.1 c | 2.9 cd | | N300 | 6.4 a | 7.7 a | 7.2 a | 5.0 a | 6.4 a | 7.2 a | 7.1 a | 3.3 a | | N450 | 6.2 ab | 7.3 ab | 7.0 ab | 5.0 a | 5.9 abc | 6.9 a | 6.4 bc | 3.1 ab |
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