| 树木-水稻农林系统中害虫的侵害 |
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| 作者姓名： | K. K. Islam G. M. M. Rahman A. T. M. Rafiqul Hoque |
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| 作者单位： | Department of Agroforestry Bangladesh Agricultural University Mymensingh Bangladesh，Department of Agroforestry Bangladesh Agricultural University Mymensingh Bangladesh，Institute of Forestry and Environmental Sciences Chittagong University Chittagong 4331 Bangladesh |
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| 摘 要： | 本文比较研究了10种水稻害虫在3个树种(Akashmoni,Jhau和Albida)与稻子混栽的农-林复合生态系统中的发生情况,通过3个树种的冠幅大小、透光率以及害虫发生程度相比较,提出农-林复合生态系统中,水稻害虫的发生与树冠的透光率呈密切的负相关关系。
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| 关 键 词： | 透光率 害虫侵害 水稻 农林系统 |
| 文章编号： | 1007-662X（2006）01-0044-03 |
| 收稿时间： | 2005-09-10 |
| 修稿时间： | 2005-11-10 |
Infestation of insect pests in tree-rice agroforestry system |
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| K. K. Islam G. M. M. Rahman A. T. M. Rafiqul Hoque.Infestation of insect pests in tree-rice agroforestry system[J].Journal of Forestry Research,2006,17(1):44-46. |
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| Authors: | K K Islam G M M Rahman A T M Rafiqul Hoque |
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| Institution: | (1) Department of Agroforestry, Bangladesh Agricultural University, Mymensingh, Bangladesh;(2) Institute of Forestry and Environmental Sciences, Chittagong University, Chittagong, 4331, Bangladesh |
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| Abstract: | The prevalence of insect pests was studied on rice BR11 (mukta) as understory crop grown in association with 11 years old selected tree species viz, Akashmoni, Jhau and Albida in the field laboratory of the Department of Agroforestry, Bangladesh Agricultural University (BAU), Mymensingh during the period from July to December, 2003. Among the three species Albida and Jhau possessed the largest canopy and there light penetration rate were high. On the other hand, Akashmoni had the lowest canopy but it penetrated low amount of light. Albida-rice association showed the lowest infestation of major rice insects followed by Jhau-rice association, while Akashmoni-rice association showed the highest insect infestation. Light intensity in the control plot (absent of tree species) was maximum and it caused minimum severity of insects infestation as compared to other associations. From the result it appeared that light interception has the relationship with insect population in rice. Therefore, tree species having sparse canopy which allowed easy penetration of sunlight is suitable for tree-rice agroforestry system. |
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| Keywords: | Light interception Insect infestation Rice Agroforestry |
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