近年来,作者在探讨水稻开颖机理的过程中发现了几种能促进开颖的新方法,简介如下: (1)稻穗在5-100%的CO_2气体中放置0.5-6分钟,5-10分钟后开颖,且花粉活力不受影响。CO_2促进开颖的效应不限于当天将开花的小穗,对第二天开花的部分小穗也有效果。田间应用时可把CO_2气先放入保温瓶中,将稻穗在瓶中 In recent years, the authors discovered several new ways to promote openness in the process of exploring the rice opening mechanism. The brief introduction is as follows: (1) The rice is placed in 5-100% CO 2 gas for 0.5-6 minutes, 5- Open after 10 minutes, and pollen vitality is not affected. The effect of CO 2 to promote opening is not limited to the spikelets that will flowering on that day, but also to some of the spikelets that bloom the next day. CO_2 gas field applications can be put into the thermos first, the panicle in the bottle