桔小实蝇在云南蒙自地区的发生规律研究

桔小实蝇寄主范围广、繁殖量大、危害重,是世界性的重要检疫害虫。本文通过调查分析,研究了云南蒙自市的海拔、防治措施、果树种类三因素对桔小实蝇种群动态的影响。结果表明,桔小实蝇在1412 m低海拔地区的种群数量大于1608 m和1700 m高海拔地区的,这说明海拔越高,桔小实蝇种群数量越小,危害也越小。根据在相似海拔地区相同果园桔小实蝇种群数量的比较,发现严格按照本课题组探索的防治措施做好桔小实蝇防治能收到良好的效果。蒙自市的水果成熟期不同,随着各种水果的成熟,桔小实蝇种群动态会出现多个峰值,3~5月桔小实蝇种群高峰期主要出现在枇杷园,7~10月主要出现在石榴园、小红枣园和水蜜桃园。对桔小实蝇在蒙自种群动态的调查,能够为下一步防治措施的制定做好准备。

Study on the Occurrence Regularity Bactrocera dorsalis Hendel in Mengzi City of Yunnan Province

Bactrocera dorsalis is an important quarantine pest in the world because of its wide host range,large reproduction and serious damage.Through investigation and analysis,the effects of altitude,control measures and fruit tree species on the population dynamics of Bactrocera dorsalis were studied.The results showed that the population number of Bactrocera dorsalis in the low altitude area of 1412 m was larger than that in the high altitude area of 1608 m and 1700 m,indicating that the higher the altitude,the smaller the population number and the smaller the harm.According to the comparison of the population number of Bactrocera dorsalis in the same orchard at the similar altitude,it was found that the control measures of Bactrocera dorsalis explored by our research group can achieve good control effect.The fruit maturity period of Mengzi city was different.With the maturity of various fruits,there would be multiple peaks in the population dynamics of Bactrocera dorsalis.The peak of Bactrocera dorsalis mainly occured in loquat garden from March to May;occured in pomegranate garden,red jujube garden and peach garden from July to October.