稀土是近年来我国首创并重点推广的一种新型元素肥料,简称稀土微肥或硝酸稀土。在大棚蔬菜上施用,可以促进光合作用,增强植株抗逆性,提高秧苗对棚内低温、高温、弱光等不良环境的适应能力,从而促进蔬菜的优质、早熟和高产。 Rare earth is a new type of elemental fertilizer pioneered and promoted in China in recent years, referred to as rare earth fertilizer or rare earth nitrate. Applying in the greenhouse vegetable can promote the photosynthesis, enhance the stress resistance of the plant and improve the ability of the seedling to adapt to the adverse environment such as low temperature, high temperature and low light in the shed, so as to promote the good quality, precocity and high yield of vegetables.