青贮饲料的原料来源极广,禾本科作物、豆科作物、作物块根、块茎、树叶以及水生饲料等均可用来青贮。但是,用得最多的是青贮玉米(带果穗),其次是摘穗后的玉米秸、高粱秸和甘薯藤。玉米是高产饲料作物,被认为是“近似完美”的青贮原料。理想的青贮玉米杂交种必须具有下列特点:① Silage is made from a wide range of sources, including grasses, leguminous crops, roots, tubers, leaves and aquatic feeds. However, silage corn (with ears) was the most used, followed by corn straw, sorghum straw and sweet potato vine after pick-up. Corn is a high-yield forage crop and is considered a “near-perfect” source of silage. Ideal silage corn hybrids must have the following characteristics: ①