螺螨酯、噻虫嗪桶混矿物油对柑橘全爪螨和柑橘木虱的田间增效及减量作用

Decrement and Synergism of Spirocharb and Thiamethoxazine Barrel-mixed Mineral Oil on Panonychus citri and Diaphorina citri in the Field

[目的]为了探究螺螨酯、噻虫嗪桶混矿物油对柑橘全爪螨和柑橘木虱的增效和减量作用,为农药减量增效使用提供理论支撑。[方法]以螺螨酯、噻虫嗪常量、减量30%桶混矿物油助剂田间测试其增效作用、减量作用。[结果]添加助剂矿物油后,螺螨酯速效性、持效性增强,药后1、3d,螺螨酯减量30%的防效高于单剂减量和单剂常量,其他各调查时段添加助剂防效均显著高于单剂。添加矿物油后,药后3d,噻虫嗪常量防效可提高3%,减量的防效可提高约6%。[结论]添加矿物油可以减少螺螨酯、噻虫嗪的使用量,具有减量增效作用。

[Aims] This study aims to evaluate the decrement and synergistic effects of spirocidate and thiamethoxazine barrel-mixed mineral oil on citrus Panonychus citri and Diaphorina citri and to provide theoretical support for pesticides decrement and synergism. [Methods] The decrement and synergistic effects of spirocidate and thiamethoxazine by constant treatment and reduction treament with barrel-mixed mineral oil additives were tested in the field. [Results] By adding mineral oil, the fast effect and residual effect of spironolactone enhanced and the control effect of 30%reduction of spironolactone were better than that of single dose reduction and single dose constant at 1 DAT [day(s)after treatment] or 3 DAT.The control effect of spironolactone with additives was significantly higher than that of single dose in other investigation periods. By adding mineral oil, the constant control effect of thiamethoxazine increased by3 percentage points and 30% decrement control effect increased by about 6 percentage points at 3 DAT. [Conclusions]The decrement and synergism of spirocidate and thiamethoxazine could be obtained by adding mineral oil.