目前玉米亲本自交提纯,主要采取一般单繁套袋法,但因多次套袋授粉,工序复杂,且易使异株、杂株花粉混入,降低纯度。宋杖子大队对单繁提纯,姊妹系提纯,一般套袋提纯,瓶生套袋提纯等四种做法进行了比较试验,结果表明,「瓶生套袋法」简便易行,且一次可完成全部提纯过程,避免因多次套袋而引起的异株花粉飞入,纯度高,是一种比较好的方法。 At present, the maize parents are selfed and purified, mainly adopting the simple single bagging method, but because of many bagging and pollination, the process is complicated, and the heterosis and heterosis pollen are easily mixed to reduce the purity. The Song Zizi Brigade conducted a comparative experiment on the four methods of purifying single breeds, purifying sister sisters, general bagging and purifying bottles. The results showed that the “bottle-bagging method” is simple and can be completed in one go Purification process to avoid the bagging caused by different strains of pollen flying into the high purity, is a better way.