不同氮磷钾用量对苕子养分吸收和累积的影响

摘要

The effects of the application of nitrogen, phosphorus and potassium fertilizer on the nutrient uptake of smooth vetch were studied under pot experiment. The results showed that the influences of the application of nitrogen and potassium fertilizer on the nutrient content and nutrient uptake of smooth vetch were not significant; while the influences of the application of phosphorus fertilizer on the nutrient content and nutrient uptake of smooth vetch were significant. The application of a little nitrogen and more phosphorus fertilizer in the soil with high available potassium content could promote the absorption of nitrogen and potassium in the process of growth of smooth vetch.%盆栽试验条件下,研究不同氮、磷、钾用量对苕子养分吸收和累积的影响.结果表明,施氮、钾肥的大多数处理对苕子的养分含量及累积量影响差异不显著,施磷肥的大多数处理对苕子作物的养分含量及累积量差异显著.在生产实践中,在钾背景值较高的土壤中,应少施氮肥增施磷肥来促进对氮素、钾素的吸收.