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1986年广东农垦系统有54个农场对开割胶树施用稀土,面积达34.1万亩。割胶树施用稀土后,一般增产干胶3～15％;提高干含0.2～2.5％;减轻死皮病;再生皮恢复快;与乙烯利配合使用,增效更为显著;不同程度地提高经济效益。存在的问题是施用稀土后胶树增产不很稳定;增产的机理尚有争议;长期使用的效果有待验证。今后,对开割胶树施用稀土,应从提高经济效益的目的出发,因时因地因树制宜,逐步推广。
In 1986, 54 farms in Guangdong Land Reclamation System applied rare earth to the plastic mulching trees with an area of 341,000 mu. After tapping the rare earth, the general increase of dry glue 3 ~ 15%; improve the dry content of 0.2 ~ 2.5%; reduce the dead skin disease; regeneration skin quickly; with ethephon, synergistic effect is more significant; to varying degrees, improve the economy benefit. The problem is that the application of rare earth gum tree production is not very stable; the mechanism of stimulation is still controversial; long-term use of the results to be verified. In the future, the application of open tipping gum rare earth, should start from the purpose of improving economic efficiency, due to local conditions due to tree, and gradually promote.