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Position: Home > Articles > The effect of G. grisescens on controlling P. lapathifolium Acta Tabacaria Sinica 2006,12 (2) 34-37

烟田蓼科杂草的重要天敌-褐背小萤叶甲对酸模叶蓼的控制效果研究

作者：

林智慧;杨建全;赖禄祥;张玉珍;陈家骅

单位：

福建农林大学;福建烟草公司;福建烟草公司三明分公司

关键词：

褐背小萤叶甲;酸模叶蓼;控制效果

摘要：

试验结果表明,褐背小萤叶甲幼虫对酸模叶蓼幼苗期(4叶片/株)的控制效果较强,控制效果随着虫密度的增加而增强。幼虫期的控制效果(y)和1龄幼虫放虫密度(x)的线性关系式y=0.0781+0.2701x。每株投放1龄幼虫3.0头,就可取得良好防效。褐背小萤叶甲成虫对酸模叶蓼(10叶片/株)的控制效果更为显著。每株放虫4.0头、5.0头和6.0头的小区,10d后防治效果分别达到80.0%、91.3%和100%。放虫后10d的控制效果(y)与成虫放虫密度(x)的相关式y=0.2363+0.1309x,成虫对酸模叶蓼的控制效果随着放虫密度的上升而提高。成虫的投放密度达到5.0头/株,就能取得良好的控制效果。

译名：

The effect of G. grisescens on controlling P. lapathifolium

作者：

LIN Zhi-hui1 YANG Jian-quan2 LAI Lu-xiang1 ZHANG Yu-zhen2 CHEN Jia-hua3 (1 Sanming Tobacco Company, Sanming, 365001;2 Fujian Agriculture and Forestry University, Fuzhou, 350002;3 Fujian Provincial Tobacco Compony, Fuzhou, 350003)

关键词：

G. grisescens; Polygomam lapathifolium; control effect

摘要：

Studies showed that the larvae of G. grisescens could effectively control the 4-leaf-seedlings of P. lapathifolium and the control effect would be strengthened as the larva density increased. The linear relation between the control effect (y) and the density of one-year-old larvae (x) could be described as y=0.0781+0.2701x. Introduction of 3 one-year-old larvae to each seedling could result in a favorable control effect. The effect of the imagoes on controlling the 10-leaf-plants of P. lapathifolium was more obvious that in fields where had been respectively introduced 4, 5, and 6 imagoes to each plant, 80%, 91.3%, and 100% of P. lapathifolium plants were under control after 10 days. The linear relation between the control effect (y) after 10 days and the imago density (x) was y=0.2363+0.1309x, indicating that the control effect would be strengthened as the imago density increased. Introduction of 5 imagoes to each plant could result in a favorable control effect.

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烟田蓼科杂草的重要天敌-褐背小萤叶甲对酸模叶蓼的控制效果研究

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