盆栽试验结果表明,棉花施用稀土可以对其生长产生一些生理效应,不论是用稀土浸种或叶面喷施,都可促进生长,使棉花根系发达,吸收养分多,叶片叶绿素含量和光合作用率提高,电解质外渗率减低,并引起叶片微形态结构发生了变化,说明棉花施用稀土增产有一定的生理基础. The results of pot experiment showed that the application of rare earth could have some physiological effects on the growth of cotton, and the growth of cotton could be promoted by soaking seeds with rare earth or foliar spraying. The cotton root system was developed, the nutrient absorption was more, chlorophyll content and photosynthesis rate were increased , Electrolyte leakage rate decreased, and caused changes in leaf micro-morphological structure, indicating that the application of cotton to increase production of rare earth has some physiological basis.