关键词: 菜用大豆, 菜用大豆, 灭蝇胺, 残留消解动态, 安全性评价

Abstract: To clarify the use of agricultural chemicals in rice production in Shenyang, sampling survey and analysis were conducted in four main rice- farming districts of Shenyang，including Xinmin, Liaozhong, Sujiatun and Faku, by questionnaire. A total of 62 farmer households were surveyed, and the investigated areas covered up to 11110 hm2. The results showed that the average use time of agricultural chemicals was 9.98 and the average dosage was 15.57 kg/hm2 during rice production. There were 41 kinds of active ingredients among the 92 surveyed agricultural chemicals, which contained 10 herbicides, 19 pesticides and 12 bactericides. The traditional formulation of agricultural chemicals was used as the primary choice in production process, including emulsifiable concentrates, wettable powders and suspensions, et al. The ratio of traditional agricultural chemicals was up to 81.62% . The ratio of low toxic agricultural chemicals was 72.83% and 65.27% of insecticides were medium toxic agricultural chemicals. The low professional quality of farmers, the high cost of rice production, the few specialized services of plant protection and the less preferential subsidy policies, etc. were the problems in agricultural chemical use. Policy adjustment and formulation in Shenyang could reduce agricultural chemicals use intensity by farmers, promote the use of new agricultural chemicals and biological agricultural chemicals, and achieve the purpose of agricultural chemical reduction.