| 大袋蛾防治阈值的研究 |
| |
| 引用本文： | 奥恒毅,邵祟斌,周嘉熹.大袋蛾防治阈值的研究[J].林业科学研究,1991,4(2):167-171. |
| |
| 作者姓名： | 奥恒毅 邵祟斌 周嘉熹 |
| |
| 作者单位： | 陕西省森林病虫害防治站
(奥恒毅)，西北林学院
(邵祟斌)，西北林学院(周嘉熹) |
| |
| 摘 要： |
|
| 关 键 词： | 大袋蛾 食叶量 防治 指标 泡桐 |
| 收稿时间： | 1990/1/10 0:00:00 |
The Preventive Threshold of Cryptothelea variegata |
| |
| Ao Hengyi,Shao Chongbin and Zhou Jiaxi.The Preventive Threshold of Cryptothelea variegata[J].Forest Research,1991,4(2):167-171. |
| |
| Authors: | Ao Hengyi Shao Chongbin and Zhou Jiaxi |
| |
| Institution: | Ao Hengyi(Forest Pests and Diseases Control Station of Shanxi Province)Shao Chongbin Zhou Jiaxi(Northwestern College of Forestry) |
| |
| Abstract: | Cryptothelea variegata Snellen harms leaves of Paulownia fortune: during the larval stage, the area nibbled is 248.28cm2/one larva. That the nibbled area of leaves makes up 25 per cent of the total leaves on each tree has been determined as the index of control. As for old tree, the index of control was 4 larvae/ten pieces leaves. The relation between total leaves on each tree (y. cm2) and diameter breast-high (x:cm) is: y=10987.5281x1.2647. |
| |
| Keywords: | Cryptbthelea variegata Paulownia fortunei nibbled area index of control |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《林业科学研究》浏览原始摘要信息 |
| 点击此处可从《林业科学研究》下载免费的PDF全文 |
