| 油松毛虫性信息素监测量与失叶率及虫口密度的相关性分析 |
| |
| 引用本文： | 杜凯名,高成龙,刘文萍,张连生,陆鹏飞,骆有庆.油松毛虫性信息素监测量与失叶率及虫口密度的相关性分析[J].植物保护学报,2016,43(6):966-971. |
| |
| 作者姓名： | 杜凯名 高成龙 刘文萍 张连生 陆鹏飞 骆有庆 |
| |
| 作者单位： | 1. 北京林业大学林学院,省部共建森林培育与保护教育部重点实验室,北京100083;2. 北京林业大学信息学院,北京,100083;3. 辽宁省朝阳市建平县森林病虫害防治检疫站,朝阳,122400 |
| |
| 基金项目： | 国家林业公益性行业科研专项（201404401），国家自然科学基金（31570643），北京自然科学基金（6142015） |
| |
| 摘 要： | 为明确性信息素对油松毛虫Dendrolimus tabulaeformis成虫的监测量与不同危害程度林区失叶率及其幼虫虫口密度的关系,采用棋盘式五点取样法,将失叶率、幼虫虫口密度及成虫监测量两两进行模型拟合。结果显示,幼虫低虫口密度(y_1)、高虫口密度(y_2)与对应的成虫监测量(x_1)、(x_2)呈二次方曲线函数,方程分别为y_1=-0.060x_1~2+6.174x_1-85.753;y_2=0.076x_2~2-3.111x_2+109.844;在幼虫极高虫口密度(y_3)时,成虫监测量(x_3)呈线性递减,方程为y_3=-1.795x_3+214.060;幼虫虫口密度(y)、成虫监测量(x)随着失叶率(z)的增加而增高,但当失叶率超过74%时,幼虫虫口密度呈下降趋势,方程为y=-794.937z~2+1188.218z-308.626;当失叶率超过72%时,成虫监测量也出现下降,二者可以按照方程x=-189.035z~2+272.374z-53.474进行模拟。研究表明,幼虫虫口低密度、高密度与成虫监测量的相关性均显著,极高虫口密度时,成虫监测量呈下降趋势;幼虫虫口密度、成虫监测量均与失叶率呈二次方函数关系。
|
| 关 键 词： | 油松毛虫 监测量 虫口密度 失叶率 性信息素 |
| 收稿时间： | 2016/1/27 0:00:00 |
The correlation analysis among sex pheromone trap catch, leaf loss rate and population density of Chinese-pine caterpillar Dendrolimus tabulaeformis |
| |
| Du Kaiming,Gao Chenglong,Liu Wenping,Zhang Liansheng,Lu Pengfei and Luo Youqing.The correlation analysis among sex pheromone trap catch, leaf loss rate and population density of Chinese-pine caterpillar Dendrolimus tabulaeformis[J].Acta Phytophylacica Sinica,2016,43(6):966-971. |
| |
| Authors: | Du Kaiming Gao Chenglong Liu Wenping Zhang Liansheng Lu Pengfei and Luo Youqing |
| |
| Institution: | Key Laboratory for Silviculture and Conservation, Ministry of Education;College of Forestry, Beijing Forestry University, Beijing 100083, China,Key Laboratory for Silviculture and Conservation, Ministry of Education;College of Forestry, Beijing Forestry University, Beijing 100083, China,College of Information, Beijing Forestry University, Beijing 100083, China,Forest Pest Control and Quarantine Station of Jianping County, Chaoyang 122400, Liaoning Province, China,Key Laboratory for Silviculture and Conservation, Ministry of Education;College of Forestry, Beijing Forestry University, Beijing 100083, China and Key Laboratory for Silviculture and Conservation, Ministry of Education;College of Forestry, Beijing Forestry University, Beijing 100083, China |
| |
| Abstract: | To evaluate the relationships among sex pheromone trap catch, leaf loss rate and population density of Chinese-pine caterpillar Dendrolimus tabulaeformis in forest with different damage degrees, leaf loss rates, population densities of larvae and catches of adults were investigated by using a five-point chessboard sampling method, and the optimal fitting models of paired-comparisons were conducted. The results showed that, the low (y1) and high (y2) population densities of larvae could be estimated by quadratic curves with adults catches (x1), (x2), and the equations were y1=-0.060x12+6.174x1-85.753 and y2=0.076x22-3.111x2+109.844, respectively. When the larvae population density was very high (y3), adults catches (x3) had a linear reduction in the case, and y3=-1.795x3+214.060. The population density of larvae (y) and adults catches (x) increased with the increase of leaf loss rate (z), and when leaf loss rate exceeded 74%, larvae population density showed a declining trend and the equation was y=-794.937z2+1 188.218z-308.626. When leaf loss rate was higher than 72%, adults catches (x) decreased, and x=-189.035z2+272.374z-53.474. The results indicated that the adults catches had significant correlation with the population density of larvae at the low and high population densities; the adults catches decreased at the higher population density. The relationships between both population density and adults catches and leaf loss rate could be described by a quadratic function. |
| |
| Keywords: | Dendrolimus tabulaeformis monitoring number population density leaf loss rate sex pheromone |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《植物保护学报》浏览原始摘要信息 |
| 点击此处可从《植物保护学报》下载免费的PDF全文 |
|
