1992年8月20～23日,农业部全国农业技术推广总站在浙江省杭州市主持召开了第三次蔬菜遮阳网覆盖堵淡栽培技术协作交流会。参加会议的有浙江、上海、江苏等22个省、直辖市和计划单列市的代表,浙江、江苏、广州、安徽等遮阳网生产厂家的代表,以及南京农大李式军教授、江苏省农科院沈善铜副研 August 20, 1992 ~ 23, the Ministry of Agriculture National Agricultural Technology Extension Station in Hangzhou, Zhejiang Province, hosted the third cover vegetable shade shade cultivation technology collaboration exchange. Representatives of Zhejiang, Shanghai, Jiangsu and other 22 provinces, municipalities and cities directly under the Central Government, representatives of shade net manufacturers in Zhejiang, Jiangsu, Guangzhou and Anhui, as well as Li Shijun, professor of Nanjing Agricultural University, Shen Shan Copper deputy research