| 丘北辣椒主要害虫及天敌种类发生消长规律研究 |
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| 引用本文： | 杨敏娟,张懿,陶玫.丘北辣椒主要害虫及天敌种类发生消长规律研究[J].云南农业大学学报,2009,24(1):150-153. |
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| 作者姓名： | 杨敏娟 张懿 陶玫 |
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| 作者单位： | 云南农业大学,植物保护学院,云南,昆明,650201
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| 摘 要： | 试验于2007年对云南省丘北县辣椒田的主要害虫、天敌种类及其发生消长规律进行了系统调查。调查结果表明：主要害虫有桃蚜、烟青虫、棉铃虫和斜纹夜蛾；主要天敌有异色瓢虫和七星瓢虫。桃蚜的发生高峰期在8月上旬，平均每株11.3头；斜纹夜蛾、烟青虫和棉铃虫幼虫的发生高峰期均在8月中旬，平均每株虫量3.9头、斜纹夜蛾3.0头。主要捕食性天敌七星瓢虫、异色瓢虫成虫发生高峰期分别在8月中上旬和8月下旬，平均每株虫量七星瓢虫0.82头、异色瓢虫1.3头。由于田间桃蚜种群数量处于较低水平，秋季辣椒生长期间对桃蚜可不采取化学防治。
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| 关 键 词： | 辣椒 害虫 天敌 消长规律 |
| 收稿时间： | 2008-2-20 |
| 修稿时间： | 2008-4-16 |
Study on the Population Dynamics of Pests and Natural Enemies of Capsicum in Qiubei |
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| YANG Min-juan,ZHANG Yi,TAO Mei.Study on the Population Dynamics of Pests and Natural Enemies of Capsicum in Qiubei[J].Journal of Yunnan Agricultural University,2009,24(1):150-153. |
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| Authors: | YANG Min-juan ZHANG Yi TAO Mei |
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| Abstract: | The pests and their natural enemies on capsicum were investigated in Qiubei County, Yunnnan province, in 2007.The results showed that the main pests were Myzus persicae(Sulze), Heilicoverpa assulta(Guenee), Helicoverpa armigera(Hubner) and Spodoptera litura(Fabricius), the natural enemies were Coccinella septempunctata and Harmonia axyridis. The maximum occurrence of M. persicae was in the early August, with an average density of 11.3 per plant. But the maximum occurrence of Hassulta,Harmigera and Slitura was in the mid-August, the average density was 3.9 and 3.0 per plant, respectively. The maximum occurrence of the adult of Cseptempunctata and Haxyridis was in the early mid-August and the late August, with an average density of 0.82 and 1.3 per plant, respectively. Because of the low population of the Mpersicae, chemical control can not be taken during the growth of autumn capsicum. |
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