Abstract: Field experiments were conducted in Jilin, Zhejiang and Guangxi provinces for determination of residual tebuconazol and azoxystrobin in tissues of rice (Oryza sativa) using GC-MS and dissipation dynamics, accumulation and distribution of tebuconazol and azoxystrobin in different parts of rice explored. Results show that dissipation dynamics of tebuconazol and azoxystrobin residues in the plants fitted the first-order kinetic equation, and dissipation half-life of tebuconazol and azoxystrobin in the plants was 4.68-5.68 and 4.65-6.08 d, respectively. When 168.8 g•hm^-2 (recommended dosage) and 253.2 g•hm^-2(1.5 times the recommended dosage) of 750g•L^-1 tebuconazol and azoxystrobin water dispersible granules was sprayed twice and thrice, respectively, the accumulation and distribution of tebuconazol and azoxystrobin in tissues of the plants was characterized by the order of husk > straw > rice in Jilin and the order of straw > husk > rice in Zhejiang and Guangxi.

Key words: tebuconazol, azoxystrobin, Oryza sativa, accumulation, distribution