科研之友
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摘要
two experiments were conducted with the objective of evaluating the influence of si and p application upon organic and inorganic p forms in two soils solos: classificaˋˋo da fao e soil taxonomy (orthic quartzarenic neosol - rqo- and dystroferric red latosol - lvdf), having contrasting texture and mineralogy, before and after rice cultivation. the experimental was in a 4 x 3 factorial scheme, being four p doses and three si doses. the phosphated fertilization altered the p labile forms, while in the case of low labile p forms the behaviour was dependent upon soil texture and mineralogy. the application of si was shown to be promising to increase the availability of p for plants in rice.
