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

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.