稀土元素对作物生理效应的初步研究

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稀土元素是镧系元素和钪、钇两元素的统称。其实稀土元素并不稀,它在地壳中的含量为0.0153%,在植物体内也有一定的含量。我国稀土资源居世界首位,但目前利用率很低,大多数用于工业。近年来我国在以稀土作为一种肥料(称稀土微肥)的试验方面,已经取得了一定的成效。本文就稀土元素对作物的生理效应进行初步的探讨。
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