家蚕对“灭蚕蝇”的抵抗力试验

Study on Bombyx mori's Resistant to "Mie Can Ying"

本文通过健康蚕、被家蚕追寄蝇寄生的家蚕(简称蝇蛆蚕)对"灭蚕蝇"的抵抗力试验发现:(1)"灭蚕蝇"对健康蚕、蝇蛆蚕都有一定的影响,但随着浓度增高,影响增大。(2)"灭蚕蝇"同样浓度施用后,健康蚕的抵抗力要强于蝇蛆蚕,其中50倍"灭蚕蝇"施用后,健康蚕死亡率只有10%～15%,蝇蛆蚕死亡率却高达35%以上。(3)"灭蚕蝇"添食,对家蚕的影响要大于体喷方法。虽然家蚕对"灭蚕蝇"产生了一定的抗药性,但在养蚕生产中,"灭蚕蝇"的施用浓度依然不能过高,以免造成家蚕死亡。

The test of resistant on healthy Bombyx mori and Bombyx mori parasitized by lavar of Exorista sorbillans Wiedemann to ＂Mie Can Ying＂ showed that ： （ 1 ） ＂Mie Can Ying＂ to healthy Bombyx mori and Bombyx mori parasitized by Lavar of Exorista sorbillans Wiedemann have a certain effect, and as the concentration increasing, the effect become high. （2） After adding ＂Mie Can Ying＂ of same concentration, healthy Bombyx mori＇s resistance was stronger than Bombyx mori parasitized by lavar of Exorista sorbillans Wiedemann, and after adding ＂Mie Can Ying＂ diluted one fiftieth of the original value, the mortality rate of healthy Bombyx mori only is 10% -15% , while the mortality rate of Bombyx mori parasitized by lavar of Exorista sorbillans Wiedemann is higher 35%. （3） The effect of Bombyx mori to ＂Mie Can Ying＂ adding from food, is higher than adding from body surface. Although Bombyx mori to ＂Mie Can Ying＂ produced a certain resistant, concentration of ＂Mie Can Ying＂ added is still not too high to avoid the death of Bombyx mori in sericulture production.