多效唑在水稻栽培中过去多应用于喷施秧田，以达到培育多蘖壮秧的目的。近两年通过试验，发现在杂交水稻栽培和繁殖制种中，把多效唑用于大田作基肥施用，能够达到省工、省肥、省种、增产的效果。现介绍如下：１　应用范围及方法凡采用单粒谷或双粒谷插秧的杂交水稻大田和繁殖 Paclobutrazol used in rice cultivation in the past used to spray seedling, in order to achieve the purpose of cultivating more tillering seedlings. The past two years through the experiment and found that in the hybrid rice cultivation and breeding seed production, the role of paclobutrazol for field use as a base fertilizer, to achieve provincial workers, provincial fertilizer, provincial species, increase production. Are described below: 1 Applications and methods Where single grain or double grain valley transplanting hybrid rice field and breeding