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- W2386652199 abstract "Soybean yield and quality are sensitive to soil moisture.Potassium fertilizer application may enhance the effect of soil moisture on the quality and biomass/seed yield of soybean at different growth stages,but few reports have focused on it.In this study,pot-experiments were carried out to investigate the effect of water-potassium coupling on quality and biomass/seed yield of soybean.Three water supply levels and three potassium fertilizer application levels were applied at vegetative stage(V2-R1),flowering stage(R1-R3) and podding stage(R3-R5),respectively.The results showed that soil waterlogging at vegetative stage increased soybean protein content to a certain extent,however,both soil drought and waterlogging stress reduced the percentage of soybean protein/oil on other growth stages.Potassium fertilizer was beneficial to protein accumulation but not to oil accumulation,indicating that potassium fertilizer played an important role only when soil water content was suitably supplied.For all the stages,both drought and waterlogging conditions were found to decrease the yield of soybean,in which drought condition reduced the yield more significantly.The negative effect of soil drought condition at different stages on soybean yield showed in the order: podding stage flowering stagevegetative stage,and soil waterlogging had the similar negative effect on soybean yield.W2K3 was the treament with the highest biomass accumulation,and CK was the one with the optimal economic coefficient at all time for all the stages.In general,the soybean seed yield increased with increasing application of potassium fertilizer,and potassium fertilizer have the positive effect on soybean seed yield when the soil water content was controlled at vegetative stage,however,no effect was observed when the soil water content was controlled at flowering stage and podding stage.The interactive effect of water×potassium fertilizer on soybean seed yield was not found when water was controlled at vegetative stage,whereas the effect was significant as water was controlled at flowering stage and podding stage." @default.
- W2386652199 created "2016-06-24" @default.
- W2386652199 creator A5066958699 @default.
- W2386652199 date "2009-01-01" @default.
- W2386652199 modified "2023-09-28" @default.
- W2386652199 title "Effect of water-potassium coupling on yield and quality of soybean" @default.
- W2386652199 hasPublicationYear "2009" @default.
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