Shuangcheng Corn

Shuangcheng Corn

Shuangcheng Corn is a geographical indication agricultural product.

　　The cultivation of corn in Shuangcheng has a long history. According to the *Shuangcheng County Annals*, it can be traced back to 1815. In the 19th year of the Jiaqing reign during the Qing Dynasty (1814), the imperial court approved General Fuyong of Jilin Province to develop farmland through military colonization. Two years after the establishment of Shuangcheng Town, small-scale corn planting had already begun. From the Republican era, through the puppet Manchukuo period, and up to the founding of New China, the planting area of Shuangcheng Corn has increased year by year. Today, the annual planting area of Shuangcheng Corn is stable at 2.8 million mu. The history of Shuangcheng Corn cultivation is long, with written records dating back to before the Republican era (*Shuangcheng County Annals*). The history of Shuangcheng Corn is one of glory and economic development for Shuangcheng. An old soldier from the “Fourth Field Army” period, Lang Chongsheng, recalled that the dried corn-based rations—corn cakes—produced in Shuangcheng served as food for the soldiers of the Fourth Field Army and contributed to the liberation of all of China. In the “Red Tourism Site” of Shuangcheng—the Memorial Museum of the “Fourth Field Army Frontline Command”—there is a photo showing a string of dried corn hanging on the wall of the kitchen. Due to corn’s high yield compared to other crops, the planting area of Shuangcheng Corn has increased year by year since the founding of the People’s Republic of China, growing from an initial figure of several thousand mu to today’s scale. Corn production has always played a very important role in Shuangcheng’s grain output and socio-economic development.

　　Geographic Scope

　　The protected geographic indication area for Shuangcheng Corn is located between latitude 45°08′ and 45°43′ north, and longitude 125°41′ and 126°42′ east. It mainly covers 24 townships within Shuangcheng, including Shuangcheng Town, Xingfu Township, Dongguan Town, Zhoujia Town, Xinxing Township, Wujia Town, Gongzheng Township, Nongfeng Town, Yongsheng Township, Linjiang Township, Shuiquan Township, Xingshan Town, Tuanjie Township, Wanlong Township, Lequn Township, Tongxin Township, Xiqin Township, Handian Town, Jincheng Township, Lanling Town, Chaoyang Township, Dancheng Town, Lianxing Township, and Qingling Township. The total protected area spans 219,333 hectares, with 186,666 hectares dedicated to corn production, yielding a total output of 1,680,000 tons.

　　Product Quality Characteristics

　　1. Product Features: The main varieties of Shuangcheng Corn are high-starch and high-lysine types, known for their excellent quality and suitability for both grain and feed use. Products such as cornmeal, corn grits, and corn noodles made from this corn are rich in nutrients and offer a delicious taste that leaves a lasting impression. 2. Sensory Characteristics: Dominated by cultivars such as Zhengdan 958 and Aoyu No. 1, Shuangcheng Corn ears are cylindrical or conical in shape, with neatly arranged kernels, good maturity, and no tip blanking, insect damage, mold, or physical injury. The kernels are yellow, medium-toothed, plump, with high hundred-kernel weight and test weight, making them commercially premium-quality. 3. Internal Quality Indicators: Shuangcheng Corn is nutritionally rich, with high starch and lysine content, making it an excellent grain and feed dual-purpose corn. The kernels contain over 9.5% crude protein, over 70.0% crude starch, over 3.9% crude fat, over 0.29% lysine, and over 9.5% total amino acids. The crude protein content is 1.34% higher than the average of ordinary corn. 4. Safety Requirements: Shuangcheng Corn is strictly produced and managed in accordance with the *Green Food Corn Production Technical Regulations*. The producing environment meets the NY/T391 standards for green food environmental quality. Pesticide use adheres to NY/T393 guidelines for green food pesticide application, fertilizer use follows NY/T394 standards for green food fertilizer application, and all operations comply with the relevant provisions of the *Agricultural Product Quality and Safety Law*.