关键词: 沙生植物, 豆科牧草, 稀土微肥, 等离子发射光谱, ¹⁴CO₂示踪技术

Abstract: In this paper the efficiency of rare earth fertilizers to some psammophytes and legume that the treatment of seed soaking with 0.4% rare earth element solution could enhance the root activities in the seedling stage,The chlorophyll contents and ¹⁴C photosynthetic capacity measured one month after applying rare earth fertilizer showed that rare earth fertility could promote the carbon metabolism of these plant.But the increases of K,Mn,Ca,Fe,Zn and Cu contemts in different plants are different due to their different responses to rare earth fertilizer.

Key words: Psammophyte, Legume forage, Rare earth Fertilizer, Plasma emission spectra, ¹⁴C tracer technique