一些沙生植物和豆科牧草的稀土效应初探

PRELIMINARY APPROACH TO THE EFFECT OF RARE EARTH FERTILIZER ON SOME PSAMMOPHYTES AND LEGUME FORAGES

本文研究了稀土微肥对一些沙生植物和豆科牧草的肥效。研究表明：０．４％稀土微肥浸种可明显提高苗期根系活力；施用稀土一月后，植株叶绿素含量和￣（１４）ＣＯ＿２光合能力均表明，稀土可促进碳代谢；但植株体内Ｋ、Ｍｎ、Ｃａ、Ｆｅ、Ｚｎ、Ｃｕ含量的增加因品种对稀土效应的不同而不同。

In this paper the efficiency of rare earth fertilizers to some psammophytes and legumethat the treatment of seed soaking with 0.4%rare earth element solution could enhance the rootactivities in the seedling stage,The chlorophyll contents and￣(14)C photosynthetic capacity measured onemonth after applying rare earth fertilizer showed that rare earth fertility could promote the carbonmetabolism of these plant.But the increases of K,Mn,Ca,Fe,Zn and Cu contemts in differentplants are different due to their different responses to rare earth fertilizer.