期刊名称：Advance Journal of Food Science and Technology
印刷版ISSN：2042-4868
电子版ISSN：2042-4876
出版年度：2012
卷号：4
期号：6
页码：398-403
出版社：MAXWELL Science Publication
摘要：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.
关键词：Bud and boll stage ; chlorophyll fluorescence parameter ; cotton ; fertilization regulation ; SPAD value ; waterlogging
