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采用室内模拟试验方法,研究了施药剂量、稀释倍数、施药次数、剂型、施药时期对三唑磷在水稻上原始沉积的影响,并通过套袋处理探讨了穗期施药对糙米中三唑磷最终残留量的影响。结果表明,三唑磷的原始沉积量与施药剂量呈线性正相关关系,与稀释倍数呈线性负相关关系,线性方程分别为:y=0.883 1+0.352 7x(r=0.982 2)和y=110.21-0.200 5x(r=0.986 2),施药次数与三唑磷残留量呈正相关;于穗期施药后,未套袋处理糙米中三唑磷的残留量显著高于套袋处理。明确了田间施药过程中影响三唑磷在水稻上原始沉积量的主要因子为施药剂量、施药次数和稀释倍数,探明了套袋处理能有效降低糙米和谷壳中三唑磷的残留量,可为科学合理施药以有效降低农药残留提供参考。
The effects of application dose, dilution times, application times, dosage forms and application period on the original deposition of triazophos on rice were studied by indoor simulation test. The effects of application of pesticides on brown rice Triazophos impact on the final residue. The results showed that there was a linear positive correlation between the initial deposition of triazophos and the dosage, and a linear negative correlation with the dilution ratio. The linear equations were y = 0.883 1 + 0.352 7x (r = 0.982 2) and y = 110.21-0.2005x (r = 0.986 2). The number of pesticides applied was positively correlated with triazophos residues. After application, the residual amount of triazophos in non-bagged brown rice was significantly higher than that after bagging treatment. The main factors influencing the initial deposition of triazophos on rice in the field were defined as the application dose, application times and dilution times, and proved that bagging treatment can effectively reduce the content of triazophos in brown rice and chaff Residues, for scientific and rational pesticide application in order to effectively reduce pesticide residues provide a reference.