Abstract : Releasing peak of quick-acting N and K in Albic soil is at seeding stage , Releasing amount of quick-acting P almost has no change during the whole growth period ;

• 摘要 ： 白浆土中的速效氮和钾的释放高峰在苗期，速效磷则在大豆的整个生育期变化不大，而大豆对氮、磷、钾的吸收高峰均在花期；