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211—31(果木专用配方稀土)系湖南省稀土农用研究中心,在综合稀土元素生理作用的基础上,针对果树落花落果严重,品质差,而研制的一种多功能叶面喷施剂。经柑桔
211-31 (Rare earth for fruit-tree formula) is a rare earth agricultural research center in Hunan Province. Based on the physiological effects of rare earth elements, a kind of multi-functional foliar sprayer was developed to deal with the serious drop of fruit tree and poor quality. The citrus