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广聚萤叶甲和豚草卷蛾对江西南昌豚草的联合控制作用

ISSN号：2095-1787
期刊名称：《生物安全学报》
时间：0
分类：S451[农业科学—植物保护]
作者机构：[1]江西省农业科学院植物保护研究所,江西南昌330200, [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
相关基金：国家重点基础研究发展计划（“973”计划）项目（2009CB119200）; “十一五”国家科技支撑计划重大项目（2006BAD08A18）

作者：黄水金[1], 陈琼[1], 陈红松[2], 秦文婧[1], 涂雪琴[1], 郭建英[2]

关键词：广聚萤叶甲, 豚草卷蛾, 豚草, 生物防治, Ophraella communa, Epiblema strenuana, Ambrosia artemisiifolia, biological control

中文摘要：

【背景】豚草是一种世界性的重要害草,在江西南昌地区普遍发生。广聚萤叶甲和豚草卷蛾是很有利用前景的豚草天敌,而有关这2种天敌在江西南昌地区田间对豚草的联合控制效果尚不明确。【方法】2009年6月25日分别按广聚萤叶甲0.7头.株-1和豚草卷蛾0.4头.株-1的密度在江西南昌豚草入侵地同时释放2种天敌,并于8月4日～9月13日,每隔10d调查广聚萤叶甲各虫态的数量、豚草卷蛾虫瘿数、豚草的株高和死亡株数。【结果】释放前期广聚萤叶甲和豚草卷蛾种群数量增长较快,但释放70d后,豚草植株死亡率达90.14%,天敌种群数量急剧下降;释放80d后,豚草植株死亡率达到100%。此外,在整个调查期间,天敌释放区豚草株高增长缓慢,均极显著低于对照区。【结论与意义】广聚萤叶甲和豚草卷蛾在江西南昌地区田间对豚草的联合控制效果显著,宜在江西大规模推广应用。

英文摘要：

[Background]Ambrosia artemisiifolia is a worst worldwide weed and commonly occurs in Nanchang,Jiangxi Province,Southeast China.Ophraella communa and Epiblema strenuana are two important natural enemies of A.artemisiifolia and have significant exploitation and utilization value.However,there are very few studies on the combined control effect of O.communa and E.strenuana on A.artemisiifolia in Nanchang,Jiangxi Province.[Method]The two natural enemies（O.communa and E.strenuana）were released as 0.7 beetles and 0.4 moths per plant into the areas invaded by A.artemisiifolia in Nanchang,Jiangxi Province,on 25th June 2009.From 4 August to 13 September,the number of O.communa at all the metamorphosis stages,the number of cecidium of E.strenuana,the plant height and mortality of A.artemisiifolia were surveyed every 10 d.[Result]The two natural enemies increased rapidly in the early stage,but after released for 70 d,the number of the two natural enemies decreased sharply with the mortality of A.artemisiifolia up to 90.14%.After released for 80 d,the mortality of A.artemisiifolia reached to 100%.Furthermore,the plant height of A.artemisiifolia in the releasing area increased very slowly during the measurement period,but was significantly lower than that of the control.[Conclusion and significance] The joint biological control system with O.communa and E.strenuana has good control effect against A.artemisiifolia and is worth trying out more widely in Jiangxi Province.

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