Phosphorus
concentrations in irrigation, flooding, and drainage water of Paddy fields and
their relationship:-
The runoff export of phosphorous from paddy the fieldcould affect the adjacent water environment. In order to understand the characteristics of
phosphorus in the paddy field, this study analyzed PO4-P and T-P concentrations
of irrigation water, flooding water, and
runoff through field monitoring.
In addition, the correlation between pH, EC, and DO in flooding water
was analyzed and the factors affecting phosphorus behavior in paddy water were investigated.
The concentration of T-P in flooding water was high during the survey period,
and the concentration of T-P in runoff was decreased by dilution by irrigation
and rainfall.
On the other hand, the ratio of P04-P to T-P was lower than that
of irrigation water in flooding water and runoff, which was interpreted to be due to the fact that the phosphorus fertilizer was applied in the
paddy field but the adsorption was rapidly oc…
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