多效唑在三系杂交水稻种子生产上的应用研究

多效唑是一种植物生长延缓剂,能抑制赤霉素的生物合成和相应的由其所控制的生理效应.将多年的试验结果和眉山水稻种子生产实际结合,探讨多效唑在水稻苗期、生长发育转化期、花期（生殖生长初期）、生殖生长中后期的应用,及对穗萌的影响,以期阐明在三系杂交水稻种子生产上怎样应用多效唑.

Application of MET in Seed Production of the Three-line Hybrid Rice

MET,a plant growth retardants,restrain the biosynthesis of GA and the corresponding physiological effects of their control.Several years experimental results and the actual production of Meishan rice seeds were combined to discuss the application of MET in rice seed breeding,growth transformation period,flowering （early reproductive growth）,reproductive growth and the impact on the late-harvest sprouting administered,so as to elaborate how to use MET in seed production of the three-line hybrid rice.