Tangqiao Town is located in the south of Changle, at the junction of Anqiu, Linqu and Changle, and Dayi Road runs through the north and south, with convenient transportation. There are many perennial rivers, such as Wenhe River, which are rich in fresh water resources. Give full play to the advantages of natural conditions such as land and water conservancy, and vigorously develop leek production in the town, covering an area of 8,000 mu. Especially since last year, the application of environmental-friendly soil activator has been widely promoted, and the production of leek has achieved pollution-free. After testing, it has registered the trademark "Wenshui" and become the only high-quality leek production base in the county.

The main varieties are 79 1, Dugenhong and Pingjiu No.4, with an average daily market volume of 500,000 Jin and a peak daily market volume of 6,543.8+0,000 Jin. Products are sold in large quantities to vegetable wholesale markets in Northeast China, Jinan, Qingdao and surrounding counties and cities. June-August every year is the golden season for leeks to be listed, and the daily listing can reach 50,000 Jin. "Wenshui" brand pollution-free leek is well-known both inside and outside the province for its unique excellent quality. At the "Weifang assured food production and marketing matchmaking meeting" in Beijing, it was deeply loved by Beijing citizens. After on-site testing by technical authorities, all physical and chemical indicators, especially drug residue detection, are qualified, and CCTV 2 and other major news media reported that "Wenshui" leeks sell well in Beijing!

The town party committee and government seized the opportunity to start construction of 6,000 mu "Beijing pollution-free leek direct supply base". The construction of the 300-mu central demonstration base has basically ended, which can promote the growth and development of the leading industry of pollution-free leeks in the town. Qinqiao Town is a famous hometown of fruits and vegetables in Changle County. Vegetable production accounts for half of Changle County. The land around Qingfeng in Qinqiao Town is mainly alkaline, and good irrigation conditions create a suitable environment for spinach growth. Qiangzhen actively seized this favorable condition and vigorously developed the spinach industry. In order to increase the added value of spinach from Gaoya, get out of Gaoya and enter all parts of the country, Tangqiao Town has strengthened the management of spinach fertilization, applied more organic fertilizer, and strictly followed the procedures of planting pollution-free vegetables, so that the spinach produced from Gaoya is not only delicious, but also natural and pollution-free. On this basis, the trademark of "Wenshui Brand" pollution-free vegetables was registered, which greatly increased the competitiveness of fermented spinach in the market, enhanced the added value of spinach and increased farmers' income. Today, the area of spinach has reached 3500 mu. This alone will increase the income of the town by 7 million yuan.