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稀土元素是指化学元素周期表中的“镧系”元素(15种)和与其性质极为相似的钇、钪共17种元素的统称。稀土元素对多种果树都有一定的增产效应,一般增产幅度为10～30%。其次对果实品质也有明显
Rare earth elements refer to the “lanthanide” elements (15 kinds) in the Periodic Table of the Chemical Elements and the 17 elements of yttrium and scandium whose properties are very similar. Rare earth elements on a variety of fruit trees have a certain yield-increasing effect, the general yield increase of 10 to 30%. Second, the quality of the fruit is also obvious