机构地区:[1]长江大学昆虫研究所.长江大学农学院,湖北荆州434025 [2]中国农业科学院植物保护研究所.植物病虫害生物学国家重点实验室,北京100193
出 处:《果树学报》2018年第11期1406-1412,共7页Journal of Fruit Science
基 金:国家自然科学基金(31370413;31772206)
摘 要:【目的】准确简便预测柑橘大实蝇Bactrocera minax (Enderlein)成虫在橘园内的诱集适期。【方法】通过逻辑斯蒂模型拟合成虫羽化出土和橘园成虫诱集动态,并比对成虫羽化动态与橘园的成虫诱集动态(以湖北宜都为例),计算出橘园成虫诱集动态较成虫羽化动态的相对滞后程度,并分析影响滞后程度的气候因素。【结果】2010—2013年成虫羽化出土动态的逻辑斯蒂方程分别为Y=100.713/[1+Exp(10.163-0.707X)]、Y=100.452/[1+Exp(4.096-0.718X)]、Y=123.36/[1+Exp(2.996-0.484X)]、Y=118.632/[1+Exp(6.994-0.564X)]。成虫羽化始盛日分别为5月24日、5月14日、5月15日、5月11日,高峰日分别为5月26日、5月16日、5月18日、5月13日,盛末日分别为5月28日、5月18日、5月20日、5月15日。2010—2013年橘园成虫诱集动态的逻辑斯蒂方程分别为Y=94.054/[1+Exp(3.962-0.294X)]、Y=102.328/[1+Exp(4.57-0.206X)]、Y=99.727/[1+Exp(2.023-0.27X)]、Y=100.468/[1+Exp(4.584-0.375X)]。橘园诱集成虫的始盛日分别为6月5日、5月30日、5月30日、5月28日;诱集高峰日分别为6月10日、6月6日、6月5日、6月2日;盛末日分别为6月17日、6月14日、6月11日、6月6日。诱集盛期较羽化盛期存在相对稳定的滞后程度,始盛日、高峰日、盛末日的滞后程度分别为(15±1.35) d、(18.5±1.32) d、(22.5±1.55) d。各年度的滞后程度与滞后期间温度、湿度、降雨量无显著相关性。【结论】柑橘大实蝇橘园诱集动态较羽化动态之间存在相对稳定的滞后程度,在对其防治中,可通过常温保蛹法观察羽化,预测田间诱集适期,提高柑橘大实蝇成虫诱杀防治的精准性。【Objective】In order to monitor the dynamics of adult population and predict the optimal field trapping period in the citrus orchards. At present the food trapping is the main method for monitoring the dynamic occurrence of citrus fruit fly adults in the citrus orchards. Because the adult citrus fruit fly early emerged(2 or 3 days after emergence) showed the habit,which flew away from the citrus orchard and then returned to the citrus orchard to lay eggs after a period of time. The dynamic occurrence of the adult in the citrus orchard was obtained through the real-time monitoring method of trapping. The occurrence was found a serious lag, which made some limitations for guiding the trapping and killing control of adults. Some scholars have proposed the possibility to predict the dynamics of adult occurrence in citrus orchards at constant temperature, indoor room temperature, and an outdoor screening house, using the fly pupal rearing method to monitor the adult emergence dynamics. Monitoring of adult emergence using constant temperature and an outdoor screening house can predict the appropriate timing of thetrapping in citrus orchards. Constant temperature cannot be synchronized with the natural adult eclosion period in the field due to the difference between the constant temperature and the natural temperature.The natural temperature often results in low emergence rate due to uncontrollable outdoor humidity while indoor room temperature preservation eliminates the problem of inconsistent eclosion periods and low emergence rate.【Methods】Citrus fruit fly larvae were collected in Yidu city of Hubei province(Zhicheng town) in late October of each year from 2009 to 2012. The larvae pupated in a fine sand container with a water content of 15% and stored at natural temperatures(4.8-22.6 ℃). Adult emergence was monitored in the second year. Citrus orchard trapping test field was selected in Yidu city(Zhicheng town Zhifang village), Hubei province with an area of 40 000 m2. Sixty traps were evenl
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