低截位带时去雄（穗位以上２片叶处将茎秆剪断）是玉米制种田的一项新技术。试验表明，此法对产量无影响或影响极小。其优点为，去雄质量好，杂交率高，去雄时间短，成本低；去雄方便。 Low cut-off band to the male (spike above the two leaves at the stem cut off) is a new technology of corn farming. Experiments show that this method has no effect on output or minimal impact. The advantage is that the male to the good quality, high rate of hybridization, to male short time, low cost; to male convenience.