“九二○”与FY增效剂搭配使用对杂交稻制种的影响

对激素“九二○”、花调灵和FY增效剂在杂交稻制种中的应用效果进行了研究 ,结果表明 :“九二○”和花调灵混合在抽穗期集中使用 (一次性 )和相对集中使用 (二次性、三次性 ) ,均不如“九二○”与FY增效剂搭配使用效果好。“九二○”与FY增效剂合理搭配喷施能促进母本抽穗 ,减轻包颈 ,提高柱头外露率 ,从而提高异交结实率和制种产量

The Effect of kinds and Application Ways of Hormone on Yield of Hybrid Rice Seed Production

The expeiment in the effects of application ways of three hormones (Jiuerlin,Huatiaolin,FY Zengxiaoji)on hybrid rice seed production was carried out.The results was as follows: the application in groups of Jiuerlin and FY Zengxiaoji was better than the other ways which were application of Jiuerlin and Huatiaolin for once or two times. This way can advance the female parent to ear, decrease the grains wrapped in leaf, increase the rate of stigmas outside, so it can increase the seed setting and yield of hybrid rice seed production.