橘小实蝇蛋白饵剂田间应用及效果评估

应用橘小实蝇蛋白饵剂主要有悬挂诱集瓶和点喷两种方式,为了提高田间应用效果,研究了稀释倍数、使用量和周期等对引诱效果的影响。结果表明,悬挂诱集瓶和点喷使用时,稀释2倍的效果最佳;对橘小实蝇的引诱效果均随着使用量的增加而增加,最佳使用量分别为15mL和30mL;使用周期均为5d。悬挂诱集瓶试验结果中发现,适当提高pH可提高引诱效果,pH为6时引诱效果最佳,引诱数量为6.67头,其中雌虫和雄虫分别为4.67头和2.00头;比较不同寄主果园和不同地点中应用效果时发现,杨桃果园里的引诱效果比柑橘和蜜柚果园好,引诱数量为5.00头;公园、果园和校园的引诱数量分别为11.73、7.00头和5.33头。点喷应用的试验结果表明,添加量为0.20%马拉硫磷效果最佳,成虫死亡数量为7.67头。

Field application and effect evaluation of protein baits to Bactrocera dorsalis

Trap bottle and spot spray were two important means of protein bait applications. In order to improve the field application attractant effectiveness to Bactrocera dorsalis, some factors such as dilution times, amount and cycle of protein bait were studied. The results showed that the effect of two fold dilution was the best. The optimal amounts of the two methods were 15 mL and 30 mL, respectively, even though the attractant effectiveness increased with the increase of the amount used. The life cycles of two means were both 5 d. The results of trap bottle application indicated that the attractant effectiveness could be increased by raising pH value properly, and the best value of pH was 6, with an attractant number of 6.67, of which the numbers of females and males were 4.67 and 2.00, respectively. By comparing the application effects in different host orchards and different locations, we showed that the attractant effectiveness in star fruit orchards was better than orange and grapefruit orchards, and the attractant number was 5.00. The attractant numbers of park, orchard and campuses were 11.73, 7.00 and 5.33, respectively. The results of spot spray showed that the effect was best when adding 0.20% malathion, and the number of adult death was 7.67.