Introduction to Zhangjiawan Grape
Beijing Tongzhou is located in the alluvial plain of Yongding River and Chaobai River. The terrain is flat and slopes from northwest to southeast, with the highest point at 27.6 meters and the lowest point at only 8.2 meters. The soil is mostly composed of loess, loess, and sandy loam, with fertile soil and moderate texture. There are 13 rivers of various sizes within the territory, and the Grand Canal winds like a swimming dragon; The Chao Bai River has a thousand hectares of blue waves, and fishing songs sing late. The 100 meter green channels on both sides of Sanhe and Sanlu are quite spectacular, forming a natural ecological barrier. Tongzhou District belongs to the continental monsoon climate zone, which is influenced by the winter and summer monsoons, resulting in a climate characterized by dry and windy springs, hot and rainy summers, clear skies in autumn, and cold and dry winters. The annual average temperature is 11.3 ℃, with a precipitation of about 620 millimeters, making it suitable for growing grapes
Zhangjiawan, an ancient town with over a hundred years of grape cultivation history, is known as the "Turpan of Beijing" and the "Grape Town of Beijing Suburbs". It is renowned for its large planting area, diverse varieties, and excellent quality. Zhangjiawan grapes are a specialty fruit of Beijing and have been listed on the National Geographical Indication Product Protection List. On April 24, 2013, the former General Administration of Quality Supervision, Inspection and Quarantine approved the implementation of geographical indication product protection for "Zhangjiawan grapes" (Zhangwan grapes), with the scope of origin protection covering the current administrative area of Zhangjiawan Town, Tongzhou District, BeijingWhat are the nutritional values of Zhangjiawan grapes1. The sugar in grapes is mainly glucose, which can be quickly absorbed by the human body. When hypoglycemia occurs in the human body, drinking grape juice in a timely manner can quickly alleviate the symptoms
2. French scientists have found that grapes can better prevent blood clot formation than aspirin, and can lower human serum cholesterol levels, reduce platelet cohesion, and have a certain effect on preventing cardiovascular and cerebrovascular diseases<3. Flavonoids found in grapes are powerful antioxidants that can resist aging and eliminate free radicals in the body<4. Grapes contain an anti-cancer trace element (resveratrol) that can prevent healthy cells from becoming cancerous and prevent cancer cells from spreadingGrapes are not only delicious, but also grown in Zhangjiawan for seven to eight hundred years since the Yuan Dynasty. Previously, Zhangjiawan grapes were mainly known for their rose fragrance, and in the 1960s, they were first introduced to Japan's Kyoho in China. In the 1990s, the grape planting area in Zhangjiawan reached over 20000 acres. At that time, not only the capital, but also the grapes sold in provinces and cities such as Shanghai, Guangdong, and Guangxi came from Zhangjiawan