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| 影响第2代玉米螟种群数量变动的因素 | |
| 引用本文： | 丛斌,张永军,王立霞,杨长城,杨思咸,李玉清,陶福琛,李相羽,王丽娜.影响第2代玉米螟种群数量变动的因素[J].沈阳农业大学学报,2000,31(5):448-450. |
| 作者姓名： | 丛斌 张永军 王立霞 杨长城 杨思咸 李玉清 陶福琛 李相羽 王丽娜 |
| 作者单位： | 1. 沈阳农业大学植保系,辽宁,沈阳,110161 2. 辽宁省岫岩县植保站,辽宁,岫岩,110000 3. 辽宁省义县植保站,辽宁,义县,112000 4. 辽宁省阜新市植保站,辽宁,阜新,122000 |
| 基金项目： | 国家"九五"科技攻关专题(960050103)和辽宁省科委"赤眼蜂工厂化技术研究"课题提供部分资助 |
| 摘 要： | 运用通径分析法探讨了影响第２代玉米螟种群动态的影响因素,结果证明,影响第２代玉米螟幼虫发生量的关键因素首先是７月２６日至３１日的降水日数,降水日数长短与第２代玉米螟幼虫发生为害程度呈负相关;其次为卵期赤眼峰的寄生率,该因素是控制第２代玉米螟种群数量的关键因素之一。８日降水日数多有利于第２代玉米螟幼虫的发生。 |
| 关 键 词： | 玉米螟 赤眼峰 降水量 通径分析 种群数量 |
| 文章编号： | 1000-1700(2000)05-0448-03 |
| 修稿时间： | 2000年8月26日 |
Factor of Affecting the Second-Generation Asain Maize Borer Population Fluctuation with Path Analysis Method |
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| CONG Bin,ZHANG Yong-jun,WANG Li-xia,et al..Factor of Affecting the Second-Generation Asain Maize Borer Population Fluctuation with Path Analysis Method[J].Journal of Shenyang Agricultural University,2000,31(5):448-450. | |
| Authors: | CONG Bin ZHANG Yong-jun WANG Li-xia |
| Abstract: | Factors of affecting the population fluctuation of the second-generation Asian maize borer were studied with path analysis method. Before egg laying, the rainday duration on the last six days in July was the most key factor. The longer rainday on the last six days in July was, the less of the number of the second-generation larvae was. From the beginning to the end of egg laying, the key factor was the parasite of trichogramma. The average rate of parasite per year was above 80 percent. In some years, the rate could exceed by 90 percent. Generally, the precipitation in August was suitable for the second-generation Asian maize borer. |
| Keywords: | maize borer trichogramma precipitation path analysis metho |
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