据全国农技中心介绍,近年来,我国甘薯面积稳定在6500万亩左右,单产1500公斤/亩,是世界上最大的甘薯生产国。有关专家认为,当前我国甘薯产业发展存在几个问题。一是良种推广速度慢,专用品种少。受贮藏和销售条件限制,甘薯种薯种苗的供应很难通过大型种子企业统一操作,市场较为混乱,优良品种推广速度很慢,影响了甘薯高产潜力的发挥。高产、优质、专用与适应性广的品种仍比较少,特 According to the National Agricultural Technology Center, in recent years, China’s sweet potato area stabilized at about 6500 acres, yield 1500 kg / mu, is the world’s largest sweet potato producer. Experts believe that the current development of China’s sweet potato industry there are several issues. First, the promotion of seed slow, special varieties less. Due to storage and sales conditions, the supply of sweet potato seedlings is difficult to operate through large-scale seed companies. The market is rather chaotic. The promotion of fine varieties is very slow, affecting the potential of high-yielding sweet potatoes. High yield, high quality, special and adaptable varieties are still relatively small, especially