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陕西省榆林市是2002年被批准的国家级玉米杂交制种生产基地,特别是榆阳区杂交玉米制种面积多的年份达0郾53万hm2。在生产玉米种子的同时,还生产高粱、西瓜及多种蔬菜种子。为了加强种子检疫的规范管理,2005年榆阳区植保植检站对本区内11个种子经销公司(门市),来自全国20个省的
Yulin City, Shaanxi Province, was approved as a state-level maize hybrid seed production base in 2002. In particular, Yuyang District crossed corn with an area of more than 0 郾 530,000 hm2. In the production of corn seeds, but also the production of sorghum, watermelon and a variety of vegetable seeds. In order to strengthen the standardized management of seed quarantine, in 2005, Yuyang plant protection and plant inspection stations in the region 11 seed distribution companies (stores), from 20 provinces