西北农林科技大学有个“杜仲军团”

Core Insights - The article highlights the successful cultivation and commercialization of the Eucommia tree (杜仲) by Northwest A&F University, showcasing its potential as a sustainable resource for various industries [1][2]. Group 1: Cultivation and Economic Impact - In 2016, a company in Xinjiang began cultivating Eucommia trees on 200 acres of desert land, achieving an annual profit of over 3,000 yuan per acre [1]. - The cultivation area is set to expand by an additional 500 acres in the spring [1]. - The overall annual output value of the Eucommia industry in Lueyang County, Shaanxi Province, has exceeded 120 million yuan, making it the leading county for Eucommia cultivation in China [3]. Group 2: Research and Development - A team led by Zhang Kangjian at Northwest A&F University has been working since the 1980s to cultivate superior varieties of Eucommia, resulting in the first high-quality variety "Qinzhong No. 1" in 2003 [2]. - The team developed a new cultivation model that allows for a yield of 1.5 tons of dry leaves per acre, enhancing the resource's sustainability [2]. - Research has identified Eucommia leaves as a rich source of chlorogenic acid and flavonoids, while the bark is preferred for extracting Eucommia gum and specific glycosides [3]. Group 3: Industry Upgrades and Innovations - The extraction of Eucommia gum has been a bottleneck for industry upgrades, with new extraction technologies being developed to reduce energy consumption by 24% and solvent use by 60% [4][5]. - The development of a "rubber priority" extraction technology has achieved industrial-grade purity for Eucommia gum, positioning it as a potential substitute for natural rubber [5]. - The innovations have led to the creation of electromagnetic shielding materials from Eucommia gum, marking a significant advancement from theory to industry application [5].