论文部分内容阅读
为确定防治吐伦球坚蚧效果好的药剂及最佳防治时机,对吐伦球坚蚧越冬、越夏若虫进行了室内毒力测定及田间防效试验。室内毒力测定结果表明,5%啶虫脒乳油对越冬、越夏若虫活性最高,LC50分别为31.268mg/L和22.056mg/L。田间喷雾试验,14.6%噻虫嗪+9.4%高效氯氟氰菊酯悬浮剂对越夏若虫防效达99%以上。5%啶虫脒乳油对越冬若虫防效为98.76%。注干试验,25%噻虫嗪水分散粒剂200倍液和20%吡虫啉乳油50倍液注干15d后,对涌散期若虫防效为90.46%和94.16%;对越夏固定期若虫防效为92.51%和82.57%。以5%啶虫脒乳油和20%吡虫啉乳油对越冬若虫进行喷雾,防治效果与防治时机最佳。
In order to determine the effective prevention and cure Tuoling ball columbarium and the best time for prevention and treatment of Tuoling ball penguin overwintering, the summer nymphs were tested indoor toxicity and field efficacy test. The results of indoor toxicity test showed that 5% acetamiprid EC had the highest activity against overwintering and summer nymphs with LC50 of 31.268 mg / L and 22.056 mg / L, respectively. Field spray test, 14.6% thiamethoxam + 9.4% lambda-cyhalothrin suspension on Xia Xia nymph control efficiency of more than 99%. 5% acetamiprid cream on wintering nymphs control effect was 98.76%. Note dry test, 25% thiamethoxam water dispersible granules 200 times and 20% imidacloprid EC 50 times the injection dry 15d, the control of the nymphs during the flood period was 90.46% and 94.16%; the summer fixed nymphs Effective for 92.51% and 82.57%. Overwintering nymphs were sprayed with 5% acetamiprid EC and 20% imidacloprid EC, with the best control and prevention measures.