化学调控对水稻形态、生理特性和产量的影响

Effect of Chemical Regulator on Morphological Physiological Character and Yield of Rice

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%。

The experiments have been made by spraying uniconazole and paclobutrazole of different concentration to leaves during the different wet gowing seedlings.Results showed that the stem base,dry matter amassing,root ability ,tillering ,physiological metabolism and the effective spike at later growing stage would increase by chemical regulator,however,stem height decreased.Compare with CK,its yield increased 16.8% though spraying with uniconazole of 100mg/L and 13.5% spraying with paclobutrazol of 200mg/L(druing one leaf stage).