| 矢尖蚧种群密度的零频率估计 |
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| 引用本文： | 陈邦强,王代武,张权炳.矢尖蚧种群密度的零频率估计[J].西南农业大学学报,1988(2). |
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| 作者姓名： | 陈邦强 王代武 张权炳 |
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| 作者单位： | 中国农业科学院柑桔研究所，中国农业科学院柑桔研究所，中国农业科学院柑桔研究所 |
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| 摘 要： | 据据Gerrard阈限密度法,采用无虫叶片占全部抽样叶的比率来估计矢尖蚧雌成虫和幼虫的平均密度,并给出了不同虫口密度和抽样精度下的理论抽样数。
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| 关 键 词： | 种群密度 采样 /矢尖蚧 零频率 |
STUDIES ON THE ZBRO FREQUENCY ESTIMATION OF POPULATION DENSITY OF Unaspis yanonensis Kuwana |
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| Chen Bangqiang,Wang Daiwu,Zhang Quangbing Citrus Research Institute,Chinese Academy of Agricultural Sciences.STUDIES ON THE ZBRO FREQUENCY ESTIMATION OF POPULATION DENSITY OF Unaspis yanonensis Kuwana[J].Journal of Southwest Agricultural University,1988(2). |
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| Authors: | Chen Bangqiang Wang Daiwu Zhang Quangbing Citrus Research Institute Chinese Academy of Agricultural Sciences |
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| Abstract: | Acording to the Gerrard's threshold density method, the density of the female adults and larvae of Unaspis yanonensis Kuwana have been estimated and the optimum dispose of the number for sampling has been determined. |
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| Keywords: | population density sampling /Unaspis yanonensis Kuwana zero frequency |
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