目前我国９８％以上的大豆品种都是应用生物学原理通过手工杂交的方法育成。大豆手工杂交主要有预先去雄和不去雄两种方法，成活率一般为６％～２５％。为了减少劳动投入，提高大豆杂交的水平，加快品种更新速度，宝泉岭分局科研所于１９９６～１９９８年对大豆预先去雄和不去 At present, more than 98% of the soybean varieties in our country are bred by hand by using the principle of biology. Soybean is mainly hand-pre-male and non-male two methods of hybridization, the survival rate is generally 6% to 25%. In order to reduce labor input, improve the level of soybean hybrids, and speed up the renewal of varieties, Baoquanling Branch Research Institute in 1996 to 1998 to pre-escaped and not to soybeans