稀土是一种多微素的氧化物,不仅可直按供给果树的吸收利用,弥补不应发生的缺素症,同时还有刺激、催化细胞组织氨解酶、转化酶的活性,产生更多的内源激素,促进树体对N、P、K等其他营养元素的吸收利用。试验证明:喷稀土和对照相比,座果率提高8-10%,果径增加2-6mm,单果重增加3-20g Rare earth is a multi-micro-oxide, not only can be used directly to the absorption and utilization of fruit trees to make up for the lack of disease should not occur, but also stimulate the catalytic cell tissue aminolyase, invertase activity, resulting in more Of endogenous hormones to promote the tree of N, P, K and other nutrients absorption and utilization. Tests show that: spraying rare earth compared with the control, fruit set rate increased by 8-10%, fruit diameter increased 2-6mm, fruit weight increased 3-20g