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使用40%氧化乐果乳油、50%甲胺磷乳油两种内吸性杀虫剂树干注射防治松纵坑切梢小蠹的试验表明:树干注射化学药剂对防治蛀梢期小蠹成虫有较好的效果。两种药剂平均杀虫效率均在70%以上,50%甲胺磷的效果略高于40%氧化乐果。药剂对云南松树梢和针叶均无不良影响。以8月采取每孔注射1.5ml的40%氧化乐果乳油或50%甲胺磷乳油的防治效果最佳,杀虫率均达到87%以上。
Experiments on the trunk injection of two systemic insecticides with 40% omethoate and 50% methamidophos showed that trunk injection of chemical agents was more effective in controlling Beauveria bassiana adults Good results. The average insecticidal efficiency of the two agents were above 70%, the effect of 50% methamidophos was slightly higher than 40% omethoate. Pharmacy on Yunnan pine needles and needles no adverse effects. In August to take each hole injection of 1.5ml of 40% omethoate or 50% methamidophos EC best control effect, the insecticidal rate reached more than 87%.