微量稀土元素能促使农作物高产,但是长期广泛使用稀土肥料对人类和动物是否安全?到今天仍然是含糊不清的问题,也是学术界争论的问题。农业方面的人士认为:根据稀土的致死量和半致死量的毒性试验,指出稀土是低毒元素,对人是安全的。但不少研究人员认 Trace rare earth elements can promote crop yield, but long-term widespread use of rare earth fertilizers is safe for humans and animals? Today is still vague issues, but also the academic debate. According to agricultural experts, according to the lethal and semi-lethal toxicological tests of rare earths, it is pointed out that rare earths are low-toxic elements and are safe to human beings. But many researchers recognize