无公害农药“灭蚧灵”防治桑白盾蚧研究

Studies on the non-public hazard pesticide“Mie Jie Ling”against Pseudaulacaspis pentagona Targioni scale louse

用自制无公害农药“灭蚧灵”防治贵阳市园林植物主要害虫桑白盾蚧，１０倍液效果高达８９％；“灭蚧灵”单用、与微量化学农药混用，效果差异不显著。掌握在蚧虫１龄若虫、２龄若虫初喷药，可大大提高“灭蚧灵”的杀虫效果。

It is effective to use the non_public hazard pestidide `Mie Jie Ling' made by ourselves against major scale louse in garden Pseudaulacaspis pentagona Targioni Controling result of `Mie Jie Ling' 10 times was 89%; To apply single `Mie Jie Ling' to apply mingle it and chemical pesticide, the difference of both results is no enough clear. When we apply `Mie Jie Ling' at 1 age nymphal stage, 2 age nymphal initial stage of scale louse, its results will improve greatly.