陕西定边一家马铃薯良种公司的工人在放置新收的种薯（8月20日摄）。陕西省定边县位于陕甘宁和内蒙古四省区交界地带，是全国马铃薯最佳优生区之一。由于自然条件适宜，这里出产的马铃薯以个大、形圆、皮光、芽眼浅、无公害等优质特性深受好评。近年来，随着马铃薯产业不断扩大，定边马铃薯也从粗放式生产向标准化生产转变，从以生产鲜薯为主向以生产脱毒种薯为主转变，走上了良种化、集约化、标准化、专业化的发展路子，更好地推动了当地马铃薯产业的品质改善和产量提高，增强了市场竞争力。新华社记者 刘潇摄     Shaanxi sense a potato breeding company workers in place of new harvesting potato（On August 20, perturbation）。Dingbian county is located in shan, and Inner Mongolia four provinces border zone，Is the best one of potato YouShengOu。Due to the effect of natural condition suitable，Here produce potato to a big、Shape circle、PiGuang、Eye shallow、Pollution-free other high quality characteristics have been well received。In recent years，With the expanding of potato industry，Sense potato also from extensive production to the standardized production transformation，In order to produce from fresh potato to give priority to in order to produce detoxication kind of potato is given priority to change，On the entire hectareage、intensive、standardization、Professional development path，To promote the local potato industry quality improvement and increase yield，To enhance the market competitiveness。Xinhua news agency reporters LiuXiao perturbation

    陕西定边一家马铃薯良种公司的技术员在培养室查看试管苗（8月20日摄）。新华社记者 刘潇摄     Shaanxi sense a potato breeding company technicians in pure view tube seedlings（On August 20, perturbation）。Xinhua news agency reporters LiuXiao perturbation