在杂交水稻湿润育秧的不同时期分别用不同浓度烯效唑和多效唑喷施叶片 ,结果表明 ,化学调控各处理均可降低秧苗株高、增加茎基宽和干物质积累、促根、增蘖、增强植株的生理代谢 ,生育后期有效穗增加 ,产量提高。以秧苗 1叶 1心期喷施 10 0mg/L烯效唑和 2 0 0mg/L多效唑的处理增产显著 ,增产率分别为 16 8%和 13 5%。 Different concentrations of uniconazole and paclobutrazol were sprayed on the leaves of hybrid rice at different stages of wet seedling growth. The results showed that chemical treatments could reduce seedling plant height, increase stem base width and dry matter accumulation, promote root growth, increase tillering, Enhance the physiological metabolism of plants, increased effective panicle during late growth period, and increased yield. The treatment with spraying 100 mg / L uniconazole and 200 mg / L paclobutrazol at the seedling stage of 1 leaf-1 seedling increased yield significantly, yield increasing rate was 16 8% and 13 5% respectively.