在盆栽试验条件下,绿肥的当季利用率为16.5％.无残留65.8％,损失17.7％.尿素的利用率为55.8％.残留22.1％.损失22.1％.损失量占当季矿化量的51.4％.远高于无机氮肥.(土娄)土种植小麦吸收氟素的来源在施绿肥时,2/3来源于土壤;在施尿素时,2/3来源于肥料.氮肥形态对土壤原有有机氮的当季矿化率和矿化氟的去向有影响.(土娄)土原有氮的当季矿化率为10.1—12.0％。矿化氮中.作物吸收45.8—61.9％.残留10.8—12.8％.损失27.3—42.6％。 Under the pot experiment, utilization rate of green manure was 16.5%, no residue 65.8%, loss 17.7%, utilization rate of urea was 55.8%, residue was 22.1%, loss was 22.1%, loss accounted for the amount of seasonal mineralization 51.4%, far higher than that of inorganic nitrogenous fertilizer. (Soil) The source of fluorine absorption in wheat planted with wheat soil was 2/3 from soil when applied with green manure and 2/3 from fertilizer when applied with urea. There is seasonal organic nitrogen mineralization rate and the whereabouts of mineralized fluorine (soil) native nitrogen seasonal mineralization rate of 10.1-12.0%. Mineralization of nitrogen. Crops absorb 45.8-61.9%. Residual 10.8-12.8%. Loss of 27.3-42.6%.