摘要
为了明确蓖麻不同部位水提物和醇提物对韭菜迟眼蕈蚊的杀虫活性,采用浸虫法测定了蓖麻茎、叶、籽壳、籽粕水提物和醇提物对韭菜迟眼蕈蚊3龄幼虫的室内毒力,为采用蓖麻提取物防治韭菜迟眼蕈蚊提供理论依据。结果显示,蓖麻不同部位水提物和醇提物对韭菜迟眼蕈蚊3龄幼虫均有较高毒力,校正死亡率与提取物质量浓度和作用时间呈正相关;用质量浓度为1 g/m L的蓖麻茎、叶、籽壳、籽粕水提物和醇提物处理72 h,3龄幼虫的校正死亡率分别为59.88%、52.84%、88.51%、68.77%和56.67%、53.33%、83.33%、65.56%。提取物毒力大小顺序为籽壳水提物>籽粕水提物>籽壳醇提物>茎水提物>籽粕醇提物>茎醇提物>叶水提物>叶醇提物。
In order to clear the insecticidal activity of the water extract and alcohol extract of different parts of Ricinus communis on Bradysia odoriphaga,the toxicity of water extract and alcohol extract of stem,leaf,seed shell and caster cake of Ricinus communis against 3th instar larvae of Bradysia odoriphaga was tested with dipping-insect method in the laboratory,to provide a theoretical basis for controlling Bradysia odoriphaga using the extract of Ricinus communis. The result showed that both water extract and alcohol extract of different parts of Ricinus communis had high toxicity against 3th instar larvae of Bradysia odoriphaga. Meanwhile,the adjusted mortality rates rose with the increase of extract concentration and treatment time. The adjusted mortalities of 3th instar larvae were 59. 88%,52. 84%,88. 51%,68. 77%and 56. 67%,53. 33%,83. 33%,65. 56%,respectively after treatment of water and alcohol extracts of stem,leaf,seed shell and caster cake at 1 g / m L for 72 h. The order of toxicity was as follows： water extract of seed shell water extract of caster cake〉 alcohol extract of seed shell 〉water extract of stem alcohol extract of caster cake alcohol extract of stem〉 water extract of leaf 〉alcohol extract of leaf.
出处
《河南农业科学》
CSCD
北大核心
2016年第4期91-94,共4页
Journal of Henan Agricultural Sciences
基金
国家公益性行业(农业)科研专项(201303027-6)
关键词
蓖麻
水提物
醇提物
韭菜迟眼蕈蚊
杀虫活性
Ricinus communis
water extract
alcohol extract
Bradysia odoriphaga
insecticidal activity
