注干施药技术防治入侵害虫螺旋粉虱研究

采用药剂注干技术,研究了各种常规防治药剂、溶剂、新制剂对螺旋粉虱的防治效果及安全性,以及植物生长势、注干部位、注干孔深对注干剂吸收的影响。药效试验结果表明,20%乐果液剂的效果最高达90%,其次为20%吡虫啉浓可溶剂和10%啶虫脒乳油;树木对注干剂配伍溶剂的吸收试验结果表明,大叶榄仁对乙醇的吸收最快,其次分别为异丙醇、二甲基甲酰胺、丙二醇和甲醇.环已酮(1∶1),甲醇.环已酮(1∶1)对大叶榄仁易产生药害;在3种新制剂中,20%乐果液剂对螺旋粉虱的防治效果最好。树径越大,对药剂的吸收越快,5 cm孔深对药剂吸收最快,1.0 m处位置药液的吸收率最高。

Study on stunk insecticides injection technique to control the invasion pest spiralling whitefly Aleurodicus dispersus Russell

Those trails were used trunk injection method.The control effect and security of conventional pesticides,solutions and new preparations to spiralling whitefly were studied,and the effect of tree-walk,injection position and injected holes depth to absorb of agentia also were studied.The best control pesticides was rogor solution which control effect reach to 90%,next were imidacloprid and acetamiprid EC.The injection bioassays results showed that the absorbed speed of Terminalia catappa to ethanol was most q...