【摘要】 在杂交水稻两段育秧的不同时期用不同浓度烯效唑喷施叶片 ,通过考查秧苗素质和测定生理指标及产量 ,表明在第一段秧田的 1叶 1心期和寄秧 1 5d后两次用 1 0 0 mg/ L烯效唑处理 ,可培育出多蘖壮秧 ,秧苗移栽本田后生理代谢增强 ,叶片的叶绿素含量和光合速率提高 ,后期灌浆速率增大 ,有效穗增加 .杂交水稻育秧施用烯效唑增产显著 .更多还原

【Abstract】 The rice seedlings were sprayed with Uniconazole o f d ifferent consistency at different stage when seedlings were bred with two-stage method.Th e inner property of the rice seedlings, the physiological indexes and the produc t ion capacity were determined seperately,and the results indicated that the sprou ts treated with Uniconazole of 100 mg/L twice (at 1～2 leaf stage and after they have been transptanted to the temporary nursery for 15 days)had more tillers and became stronger.After being planted in the paddy field,their physiologcal metab olirm,the chlorophyll content in the leaves and the rate of photosynthesis were all enhanced,while the rate of grain filling in later stage and the number of ef fective panicles increased.This practice played a remarkable role in increasing rice yielal.更多还原