| 卵形异绒螨空间分布型及二阶抽样技术研究 |
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| 引用本文： | 张韧,胡长效. 卵形异绒螨空间分布型及二阶抽样技术研究[J]. 江西农业学报, 2007, 19(12): 53-56 |
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| 作者姓名： | 张韧 胡长效 |
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| 作者单位： | 徐州生物工程高等职业学校,江苏徐州,221006;徐州生物工程高等职业学校,江苏徐州,221006 |
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| 摘 要： | 卵形异绒螨是我国北方地区梨树蚜虫的一种外寄生性天敌。通过2005年5月调查,得出卵形异绒螨在梨树间和梨树内都属于聚集分布。计算了卵形异绒螨二阶抽样的理论抽样数,进行了卵形异绒螨二阶抽样的序贯分析。
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| 关 键 词： | 卵形异绒螨 空间分布型 二阶抽样 序贯抽样 |
| 文章编号： | 1001-8581（2007）12-0053-04 |
| 收稿时间： | 2007-09-05 |
| 修稿时间： | 2007-09-05 |
Study on Spatial Distribution Pattern of Allothrombium ovatum and Its Second Order Sampling Technique |
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| ZHANG Ren,HU Chang-xiao. Study on Spatial Distribution Pattern of Allothrombium ovatum and Its Second Order Sampling Technique[J]. Acta Agriculturae Jiangxi, 2007, 19(12): 53-56 |
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| Authors: | ZHANG Ren HU Chang-xiao |
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| Abstract: | Allothrombium ovatum was an ectoparasitic natural enemy on pear aphids in northern China.The investigation results showed that the spatial distribution pattern of Allothrombium ovatum in pear garden and in pear tree all belonged to aggregation distribution.Theoretical second order sampling number for this natural enemy was presented and the second order sequence sampling technique was explored. |
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| Keywords: | Allothrombium ovatum Spatial distribution pattern Second order sampling Sequence sampling |
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