多效唑对大豆的株型调节及增产具有明显效果,由于在始花期或盛花期喷药,距收期较短,为明了这一特殊用药时期的降解动态、最终残留及对后茬作物的持效影响,我们于1990～1991年在浙江杭州、河南新乡两地进行了残留试验,为多效唑在大豆田安全使用提供科学依据。 Paclobutrazol has obvious effect on the plant type regulation and yield increase of soybean. Because of the shorter spraying period at the initial flowering stage or the full flowering stage, the effect of PP333 on the degradation dynamics, final residue and the effect on the subsequent crop In 1990-1991, we carried out the residue test in Hangzhou, Zhejiang Province and Xinxiang, Henan Province to provide a scientific basis for the safe use of paclobutrazol in the soybean field.