| 桑田越北腹露蝗若虫空间格局研究 |
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| 引用本文： | 陈强,张振飞,吴伟坚,丘思娟,陈玉托. 桑田越北腹露蝗若虫空间格局研究[J]. 华南农业大学学报, 2009, 30(2) |
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| 作者姓名： | 陈强 张振飞 吴伟坚 丘思娟 陈玉托 |
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| 作者单位： | 华南农业大学昆虫生态研究室,广东广州,510642;广东省英德市病虫测报站,广东英德,513000;广东省植物保护总站,广东广州,510500 |
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| 基金项目： | 国家自然科学基金，广东省蝗虫防治经费 |
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| 摘 要： | 利用扩散系数(C)和离散分布的理论拟合,对越北腹露蝗Fruhstorferiola tonkinensis 1～5龄若虫的田间调查数据进行分析.结果表明,各龄蝗蝻均呈聚集分布,1～5龄蝗蝻的C分别为879.578、152.742、22.972、6.053和6.150,1龄蝗蝻聚集度最高,3龄后开始扩散.1～3龄蝗蝻的空间格局可用Neyman A型分布拟合,4～5龄可用负二项分布拟合,即1～3龄呈核心分布,4～5龄演变为嵌纹分布.1龄蝗蝻平均每个聚团的个体数(m2)为878头,2～3龄调查范围内的平均蝗团数(m1)增加,平均每蝗团的个体数(m2)减少.4～5龄聚团瓦解.
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| 关 键 词： | 越北腹露蝗 空间格局动态 扩散系数 概率拟合 桑田 |
Spatial Distribution Pattern of Nymphs of Fruhstorferiola tonkinensis in Mulberry Field |
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| CHEN Qiang,ZHANG Zhen-fei,WU Wei-jian,QIU Si-juan,CHEN Yu-tuo. Spatial Distribution Pattern of Nymphs of Fruhstorferiola tonkinensis in Mulberry Field[J]. JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY, 2009, 30(2) |
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| Authors: | CHEN Qiang ZHANG Zhen-fei WU Wei-jian QIU Si-juan CHEN Yu-tuo |
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| Affiliation: | 1 Laboratory of Insect Ecology;South China Agricultural University;Guangzhou 510642;China;2 Yingde Plant Disease and Insect Pest Forecast Station of Guangdong Province;Yingde 513000;3 Plant Protection Station of Guangdong Province;Guangzhou 510500;China |
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| Abstract: | The index of dispersion(C) and probability distributions fitting were applied to study the spatial pattern of nymphs of Fruhstorferiola tonkinensis in mulberry field.The results showed that the spatial distribution patterns were aggregated in all instars of the nymph.The dispersion indexes of the nymphs were 879.578,152.742,22.972,6.053 and 6.150 from the 1st to 5th instar,respectively.The spatial distribution pattern of the 1st to 3rd instar nymphs were fitted to Neyman type A distribution,and the 4th and ... |
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| Keywords: | Fruhstorferiola tonkinensis spatial distribution pattern index of dispersion probability distributions fitting mulberry field |
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