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Abstract
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Article Information:
Effects of Fertilization on Growth and Yield of Cotton after Surface Waterlogging Elimination
Qi-xia Wu, Jiang-qiang Zhu, Kai-wen Liu and Lun-guo Chen
Corresponding Author: Jiang-qiang Zhu
Submitted: September 11, 2012
Accepted: October 09, 2012
Published: December 20, 2012 |
Abstract:
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In the regions vulnerable to surface and subsurface waterlogging, the stage of cotton bud and boll stage
set is just in rainy season. Cotton often meets comprehensive stress from surface and subsurface waterlogging.
waterlogging during this stage inhibits cotton development and reduces final yield significantly. The objective of
this investigation was to evaluate the effects of fertilization after waterlogging elimination on the SPAD value,
chlorophyll fluorescence parameter and yield under a short-term waterlogging. Test-pit experiments were conducted
with two waterlogging level, namely 4 and 9 days and 4 days waterlogging treatment set 3 level of fertilization, 9
days waterloging treatment set 4 level of fertilization. The results showed that: 1) The SPAD value decreased
significantly under the waterlogging and decreased to the lowest value 7 days later. Then, the SPAD value increased
significantly after fertilization regulation, the treatment of 4 day waterlogging required more than 20% fertilizer and
the treatment of 9 days waterlogging required more than 30% fertilizer. 2) The minimum fluorescence (Fo) was
increased under the waterlogging, while potential photochemical efficiency of PS||(Fv/Fo) and the maximum
photochemical efficiency of open photosystem(Fv/Fm) was reduced under the waterlogging, the increased degree of
Fo and the reduced degree of Fv/Fo and Fv/Fm were enhanced with the increase of waterlogging degree. 3) The
hot summer bolls, autumn bolls and the unginned cotton yield decreased significantly under the waterlogging,
fertilizer after the waterlogging elimination could raise the unginned cotton yield, there was a significant correlation
between the Relative yield (Ry) and the duration of surface waterlogging (Tw), the duration of subsurface
waterlogging ((Tg) and proportion of Fertilizer ((Fb), which could represent by the linear relationship.
Key words: Bud and boll stage, chlorophyll fluorescence parameter, cotton, fertilization regulation, SPAD value, waterlogging,
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Cite this Reference:
Qi-xia Wu, Jiang-qiang Zhu, Kai-wen Liu and Lun-guo Chen, . Effects of Fertilization on Growth and Yield of Cotton after Surface Waterlogging Elimination. Advance Journal of Food Science and Technology, (6): 398-403.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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