1983～1986年,承担农业部植保总站的北方城市(北京、沈阳、西安、兰州)蔬菜病虫害调查课题,曾对沈阳市41种蔬菜上的病害进行了比较系统的调查,共发现192种病害。其后,在1987～1991年间,又继续开展研究工作,不定期调查了29种蔬菜上的病害,其中27种以前曾有过调查,2种蔬菜为新调查种类。5年 From 1983 to 1986, a survey of pests and diseases of vegetables in the northern cities (Beijing, Shenyang, Xi’an and Lanzhou) of the Plant Protection Terminology Office of the Ministry of Agriculture carried out a systematic survey on diseases on 41 vegetables in Shenyang City, and found 192 diseases. Subsequently, from 1987 to 1991, the research work was continued, and the diseases on 29 kinds of vegetables were irregularly investigated, of which 27 were previously investigated and 2 were the new types of surveys. 5 years