不同产地磷肥中稀土含量及其肥效

The Content and Fertilizer Effciency of Rare Earth in Phosphate Fetilizer from Different Place of Production

本文选用云、贵、川、鄂、冀五省七个产地磷肥为供试样品，分析了它们的稀土含量，并于等氮、磷量条件下，在冬小麦上观察了磷肥中稀土的增产效应．试验结果表明：１．不同产地磷肥中稀土含量不同．且单一稀土元素含量及稀土元素配分有别：２．小麦产量与磷肥中稀土含量有关．相关系数ｒ＝０．９８５．回归方程为ｙ＝２９０．０７＋１８４．５０ｘ（ｙ—小麦产量ｋｇ／亩．ｘ—磷肥中稀土总量％）。

Abstract The contents of rare earth of seven phosphate fertilizer samples from five provinces(Yunna Guizhou,Sichuan,Hubei,Hebei) were analysed.The yield-incecasing cffect to wheat of the rare earth in phosphate fertilizers were studied under equal N. P condition.the result shows,First,The total contents of rare earth in phosphate fertilizcrs from different place of production were not same,The content of single rare earth element and rare earth element component were different.Secondly,the wheat yield was related to the content of rare earth. Their interrelatin coeffcient was 0.985 and their repression equation was y=290.07+184.50x (y represents wheat yield,x represents the total content of rare earth in hosphate fertilizer)