盆栽条件下,以春小麦为试材用~(32)P示踪技术研究了石灰性土壤上,三种形态氮肥对春小麦吸收利用氮、磷的影响.结果表明,三种形态的氮素对春小麦吸利氮素的影响有显著差异;在北方石灰性土壤上,硝态氮、酰胺态氮与重过磷酸钙配合施用对作物充分利用磷不利. Under the condition of pot culture, the effects of three nitrogen fertilizers on the uptake and utilization of nitrogen and phosphorus by spring wheat on calcareous soil were studied by ~ (32) P tracing technique using spring wheat as test material. The results showed that the three forms of nitrogen had significant effect on spring wheat The effects of N absorption and N absorption were significantly different. In the northern calcareous soil, the application of nitrate nitrogen, amide nitrogen and SERS to the full use of phosphorus was unfavorable.