The transfer of arsenic from paddy field to rice is a major exposure route of the highly toxic element to
humans. The aim of our study is to explore the effects of soil available phosphorus on As uptake by rice,
and identify the effects of soil properties on arsenic transfer from soil to rice under actual field conditions.
56 pairs of topsoil and rice samples were collected. The relevant parameters in soil and the
inorganic arsenic in rice grains were analyzed, and then all the results were treated by statistical
methods. Results show that the main factors influencing the uptake by rice grain include soil pH and
available phosphorus. The eventual impact of phosphorus is identified as the suppression of As uptake by
rice grains. The competition for transporters from soil to roots between arsenic and phosphorus in
rhizosphere soil has been a dominant feature.