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1989年在江苏省扬州、盐城、淮阴等市以及安徽的天长县共推广应用多效唑培育长秧龄杂交稻矮壮身104.5万亩,平均每亩增收稻谷40.9公斤,增产7.6％,净增经济收益16.77元,多效唑除适用于秧龄40天以上的杂交籼稻外,还可应用于秧龄35天左右的杂交稻和秧龄40天以上的粳稻秧苗。不论是粘壤土或沙壤土,小麦茬或油菜茬、大麦茬,都有显著的形态效果和增产效果。因此,多效唑培育水稻矮壮秧的应用范围可以扩大到淮河以北和长江以南的部分麦茬、油菜茬稻及豆后稻、瓜后稻等秧田。
In 1989, Yangzhou, Yancheng and Huaiyin in Jiangsu Province and Tianchang County in Anhui Province promoted the use of paclobutrazol to breed 1.0455 million mu of hybrid rice with long seedling age. The average yield per mu was 40.9 kilograms, an increase of 7.6% and the net economic benefit was 16.77 Yuan, PP333 is suitable for hybrid indica rice with seedling age more than 40 days but also can be used for hybrid rice with seedling age of about 35 days and japonica rice seedling with seedling age of more than 40 days. Both clay loam or sandy loam, wheat stubble or rape stubble, barley stubble, have significant morphological effects and yield. Therefore, the application of paclobutrazol to cultivate rice seedlings can be extended to some wheat stubble, rape stubble rice and post-heap rice, post-melon rice and other seedling fields to the north of the Huaihe River and south of the Yangtze River.