介绍多效唑（PP 333）的理化性质、生理作用、矮化机理，总结了PP 333的应用，为PP 333在植物栽培中的深入应用提供基础资料。%The physical and chemical properties, physiological effect, dwarfing mechanism of PP333 were introduced, and its application on plants and test methods were summarized in this article. It would provide basis materials for further application of PP 333 in plant cultivation.
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