随着商品经济的发展和农村产业结构的调整,选用玉米杂交种也应有所变化。首先,要用品质好的组合代替品质较差的组合。过去,单纯强调提高产量,有些组合种皮厚、出粉率低,有的角质少,有的是黄白杂交,外观上不符合商品要求。其次,要选择具多种用途的品种。随着粮食产量的提高和人民食物构成的变化,玉米不仅是做人的口粮,更重要的是做饲料和 With the development of commodity economy and the adjustment of rural industrial structure, the selection of maize hybrids should also change. First, use a combination of good quality instead of a poor quality combination. In the past, simply emphasizing increased output, some combinations of seed coat thick, low rate of flour, and some keratin less, and some yellow and white hybrids, the appearance does not meet commodity requirements. Second, to choose a variety of uses of the species. With the improvement of food production and changes in the composition of people’s food, corn is not only a man’s ration, but more importantly, to make feed and