玉米籽粒的蛋白质含量较其他粮食作物为少。提高玉米籽粒的蛋白质含量,可以用好几种方法。其中一种即施用无机氮肥,可增加籽粒和茎叶中蛋白质的百分率。另一个方法就是选择杂交用的亲本和选出蛋白质含量有可能超过标准品种的杂种。用与玉米有亲缘关系的野生种进行杂交,对提高玉米籽粒的蛋白质含量有重大的意义。大刍草(Euchlaena mexicama Schrad)无木质的孚,其籽 Corn grain protein content less than other food crops. There are several ways to improve the protein content of corn grains. One of them is the application of inorganic nitrogen fertilizer, which can increase the percentage of protein in grains and stems and leaves. Another method is to select the parents for crossbreeding and to select hybrids that may have more protein than the standard varieties. It is of great significance to improve the protein content of maize grains by crossing with the wild species of maize. Euchlaena mexicama Schrad Woodless fu, its seeds