稀土微肥用于农业生产是一种开发性新技术。稀土离子主要能促进作物根系的发育,提高对土壤中氮磷钾的吸收能力,增强光合效率和作物抗逆性,从而提高产量,实验证明,0.5ppm稀土离子就能显著提高作物中的同功酶活性,增强作物新陈代谢。使用硝酸稀土直接喷施作物的浓度一般在500ppm左右,为同功酶最大激活浓度 Rare earth fertilizers for agricultural production is a development of new technologies. Rare earth ions can mainly promote the development of crop roots and improve the absorption of nitrogen, phosphorus and potassium in the soil, enhance photosynthetic efficiency and crop resistance, thereby increasing the yield, experiments show that 0.5ppm rare earth ions can significantly improve the work of the same power Enzyme activity, enhance crop metabolism. The use of rare earth nitrate sprayed directly to the crop concentration is generally about 500ppm for the maximum active isoenzyme concentration