| 初始密度对广聚萤叶甲种群扩张的影响 |
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| 引用本文： | 郑兴汶,周忠实,郭建英,万方浩,陈红松,王建国.初始密度对广聚萤叶甲种群扩张的影响[J].昆虫天敌,2011(1). |
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| 作者姓名： | 郑兴汶 周忠实 郭建英 万方浩 陈红松 王建国 |
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| 作者单位： | 江西农业大学农学院植物保护系;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; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2009CB1192000); 国家“十一五”科技支撑计划重大资助项目(2006BAD08A18); 国家基金项目(30960223) |
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| 摘 要： | 本文通过在半自然下探讨不同初始成虫密度对广聚萤叶甲Ophraella communa种群扩增的影响。结果表明:初始密度对该叶甲种群发展和扩张影响显著。高初始密度(20对)处理的种群数量上升迅速,在短期内可迅速达到较高的水平;中等密度(5～10对)处理的种群增长速度较平缓,但在30d内亦可获得较高的种群数量;低密度(3对)处理的种群增长缓慢,在较长时间内亦无法达到理想的种群数量。根据试验结果,推荐大棚规模化饲养的起始成虫密度应为0.4～0.7头/株,以确保30d内获得较高的种群数量。
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| 关 键 词： | 生物防治 种群 初始密度 广聚萤叶甲 豚草 |
Effect of initial densities on population expansion of Ophraella communa |
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| ZHENG Xing-Wen,ZHOU Zhong-Shi,GUO Jian-Ying,WAN Fang-Hao,CHEN Hong-Song,WANG Jian-Guo.Effect of initial densities on population expansion of Ophraella communa[J].Natural Enemies of Insects,2011(1). |
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| Authors: | ZHENG Xing-Wen ZHOU Zhong-Shi GUO Jian-Ying WAN Fang-Hao CHEN Hong-Song WANG Jian-Guo |
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| Institution: | ZHENG Xing-Wen1,2,ZHOU Zhong-Shi2,GUO Jian-Ying2,WAN Fang-Hao2,CHEN Hong-Song2,WANG Jian-Guo1(1. Department of Plant Protection,Agricultural College,Jiangxi Agricultural University,Nanchang 330045,China,2. State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China) |
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| Abstract: | The effect of different initial densities on the population expansion of Ophraella communa beetles under a half-natural condition was studied in this article.The results indicated that the development and expansion of O.communa population were affected by initial densities.The population of the beetle was rapidly increased and reached a higher level in a short period under the high-initial density(20 pairs /plot).The increasing population of the beetle was slower under the mid-initial density(5-10 pairs /pl... |
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| Keywords: | biological control population initial density Ophraella communa Ambrosia artemisiifolia |
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