两种吡虫啉水剂对日本松干蚧防治效果研究

Study on the Control Effect of Two Imidacloprid Aqueous Agents on Japanese Pine Bast Scale,Matsucoccus matsumurae(Kuwana)

采用浸药法和打孔注射法,测定了两种吡虫啉水剂对日本松干蚧的防治效果。室内药效试验结果表明,施药5d后,5%吡虫啉盐酸盐水剂和5%吡虫啉乙酸盐水剂对日本松干蚧的防治效果分别可以达到55.36%和70.17%。林间试验结果表明,5%吡虫啉乙酸盐水剂可将日本松干蚧虫口密度由0.63头/cm2(中度发生)降低至0.13头/cm2(轻度发生),防治效果显著,具有极大的开发利用价值。

Using dipping-pesticide method and the punching injection method,the control effects of two imidacloprid aqueous agents on Japanese pine bast scale(JPBS)were determined.The results of laboratory tests showed thatthe control effects of 5%imidacloprid hydrochloride aqueous agents(IHAA)and 5%imidacloprid acetic acid aqueous agents(IAAA)on JPBS could reach 55.36%and 70.17%,respectively,after 5 days of application.The results of the field tests showed that 5%IAAA could reduce the pests’density of JPBS from 0.63 heads/cm2(Moderate hazard)to 0.13 heads/cm2(Mild hazard),which indicated a remarkable control effect.5%IAAA had great development and utilization value.