施氮量和密度互作对全覆膜旱作甜菜光合特性和块根产量的影响
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闫威,李国龙,李智,曹阳,张少英
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Effects of Nitrogen Application Rate and Planting Density Interaction on Photosynthetic Characteristics and Root Yield of Sugar Beet under Full-Film Mulching in Arid Regions
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Wei Yan,Guolong Li,Zhi Li,Yang Cao,Shaoying Zhang
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表4 施氮量和密度对全覆膜旱作甜菜Pn的影响
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Table 4 Effects of nitrogen application rates and planting densities on Pn of sugar beet under full-film mulching in arid regions μmol/(m2·s)
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处理
Treatment | 苗期
Seedling stage | 叶丛快速生长期
Fast growth stage of leaves | 块根糖分增长期
Sugar increasing stage of root | 糖分积累期
Period of sugar accumulation | | D1N1 | 27.5bB | 21.6aAB | 22.0bcBC | 21.4cC | | D2N1 | 24.1cdDE | 19.3cC | 21.3dCD | 20.4dD | | D3N1 | 22.3eE | 17.8dD | 19.3fE | 19.6efDE | | D1N2 | 29.4aA | 21.9aA | 24.0aA | 24.6aA | | D2N2 | 26.7bBC | 20.6bBC | 22.6bB | 22.8bB | | D3N2 | 25.0cCD | 19.4cC | 21.5cdC | 20.1deD | | D1N3 | 26.7bBC | 17.9dD | 22.7bB | 21.6cC | | D2N3 | 24.6cdD | 16.6eDE | 20.4eD | 18.9fE | | D3N3 | 23.7Dde | 16.2eE | 17.9gF | 17.7gF | | F值F-value | D | 82.30** | 61.47** | 179.01** | 188.93** | | N | 44.59** | 43.77** | 62.39** | 413.16** | | D×N | 1.87 | 3.40* | 9.75** | 13.69** |
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