The super-quality variety and the optimum harvesting time of every variety were selected.YY8 was the super-qulity foodstuff silage maize.

• 本研究提出了粮饲兼用型青贮玉米的评价体系，并利用此体系选出了最优品种(雅玉8号)和各品种的最佳收获时期。