搜索结果: 1-6 共查到“知识库 Aphis gossypii”相关记录6条 . 查询时间(0.042 秒)
Differences in growth and yield responses to Aphis gossypii Glover between different okra varieties
Aphis gossypii okra yield plant growth
2015/3/1
The reactions of five commercial varieties of okra, Abelmoschus esculentus, to A. gossypii were evaluated under semiarid field conditions. Each experimental plant of varieties Clemson spineless, Clems...
黄瓜蚜虫的图像识别与计数方法（Image Recognition and Counting for Glasshouse Aphis gossypii）
黄瓜蚜虫 温室 图像处理 粘连 检测
2010/12/29
通过分析蚜虫区域、绿色背景和蚜叶区的G分量特点，建立G分量阈值确定原则，并采用G分量阈值将蚜虫区域和非蚜虫区域分离开。针对蚜虫的粘连重叠问题，利用扩展极小值阈值变换的方法对输入图像进行标记，对标记后的图像进行距离变换和分水岭分割，以去除粘连。试验结果表明：算法能有效地分割粘连重叠的蚜虫，过分割率与欠分割率之和为3.14%。计数准确率达到96.2%，高于直接计数的80.7%。
Resistance of Aphis gossypii (Homoptera: Aphididae) to selected insecticides on cotton from five cotton production regions in Shandong, China
Aphis gossypii cotton insecticide resistance
2009/3/5
Resistance of cotton aphid (Aphis gossypii Glover) collected from four leading cotton producing regions and one non-cotton producing region in Shandong Province, China, in 1985, 1999, and 2004 to fe...
Development and Fecundity of Aphis Gossypii Glover（Homoptera：Aphididae）on Three Malvaceae Hosts
Aphis Gossypii Glover Three Malvaceae Hosts
2009/1/15
Aphis gossypii Glover (Homoptera, Aphididae) obtained from cotton fields near Adana in the east Mediterranean region of Turkey were colonized on Gossypium hirsutumL. ‘Çukurova 1518’ in a clima...
Functional Response of Two Coccinellid Predators, Scymnus levaillanti and Cycloneda sanguinea, to the Cotton Aphid, Aphis gossypii
Coccinellid Scymnus levaillanti Cycloneda sanguinea functional response aphid density handling time attack constant
2009/1/12
Functional responses of 2 female coccinellid predators, Scymnus levaillanti and Cycloneda sanguinea, to the cotton aphid, Aphis gossypii, at various temperatures were studied under laboratory conditi...