STUDY　ON　RESIDUES　OF　^（14）C－FENITROTHION　IN　MODEL　RICE－FISH　ECOSYSTEM　AND　FIELD　RICE－FISH　ECOSYSTEM  

作　　者：张仲良 王化新 郭大智 陈志瑜 吴素琼 

出　　处：《Nuclear Science and Techniques》1994年第1期46-50,共5页核技术（英文）

摘　　要：Residues of 14C--f e.itrothio. in a model rice--fish ecosystem and field rice--fish ecosystem were studied. When equal amounts of the pesticide were applied, the extractable residues in brown rice (equivalent to 34.3f 1.9 μg / kg fenitrothion) and rice stems and leaves (20.9± 1.5 μg / kg) of the model rice-fish ecosystem were 10-15times higher than that of the field rice-fish ecosystem(4.48 ± 0.13 μg / kg and 1.27 ±0.34 μg / kg respectively). Residues in upper part of the soil (6.50± 0.1- 8.10±0.2 μg / kg) and lower part of the soil (1.30± 0.1-1.50±0.1μg / kg) of the model rice-fish ecosystem were 10-40 times higher than that of the field rice-fish ecosystem (0.17 ±0.01 μg / kg). The extractable residues in paddy water of the model ecosystem (0.30 ± 0.01 μg / kg) were similar to that of the field ecosystem (0.20 ± 0.02 μg / kg). Whenthe fenitrothion was sprayed on the rice plants, residues in brown rice, fish body, soiland paddy water were lower than those when the pesticide was sprayed on the surfaceof the soil.

关 键 词：FENITROTHION Residue MODEL FIELD Rice--fish ecosystem 

分 类 号：X131.3[环境科学与工程—环境科学]