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储藏稻谷用甲基嘧啶硫磷(0—[2—二乙氨基—6—甲基—4—嘧啶]0,0—二甲基硫代磷酸酯)处理,其方法分为二种:(1)喷雾法5、10、15ppm;(2)砻糠载体法5、10ppm。防虫磷处理浓度为15ppm,作为对照。上述六个处理各十万斤,分别装在六个仓库中。另一仓作对照样品。储藏时间为一年。在一定的间隔时间里,检查害虫的发生情况,并扦样测定稻谷中的残留。实验结果表明:用5、10、15ppm。喷雾处理后的稻谷经一年储藏后,在原粮中分别可检出2.82;7.11和6.25ppm;用5、10ppm砻糠法处理后的稻谷在原粮中可检出3.29和5.89ppm;用马拉硫磷15ppm处理的稻谷为5.28ppm。一年后的碾米产品中其残留情况为:喷雾处理的三种浓度在加工大米中分別检出0.36;0.44;0.49ppm;细糠中分别为9.63;18.48;18.66ppm,砻糠法处理的稻谷加工后的大米中分别检出0.26和0.26ppm,在细糠中分别为13.80和14.66ppm。用上述加工的大米制成米饭后在所有浓度下均不能检出有甲基嘧啶硫磷存在。
The stored rice is treated with Methylthium Phosphate (0- [2- diethylamino-6-methyl-4-pyrimidine] 0,0-dimethyl phosphorothioate) ) Spray method 5,10,15 ppm; (2) 砻 bran carrier method 5,10 ppm. Pest control concentration of 15ppm, as a control. The above six handling each ten thousand pounds, were installed in six warehouses. Another warehouse as a control sample. Storage time is one year. In a certain interval of time, check the occurrence of pests and sticks to determine the residual rice. The experimental results show that: with 5,10,15 ppm. Sprayed rice after storage for one year, respectively, can be detected in the original 2.82; 7.11 and 6.25ppm; with 5,10 ppm 砻 bran after treatment of rice in raw grain can be detected 3.29 and 5.89ppm; Phosphorus 15 ppm treated paddy was 5.28 ppm. One year after the rice products, the residue was: the three concentrations of spray treatment were detected in the processed rice 0.36; 0.44; 0.49ppm; fine bran were 9.63; 18.48; 18.66ppm, 0.26 and 0.26 ppm were detected in the paddy rice, 13.80 and 14.66 ppm in the fine bran, respectively. Methyl pyrithione was not detectable at all concentrations using the rice processed above.