| 1.6%瑞香狼毒素水乳剂对4种蔬菜害虫的作用方式比较 |
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| 引用本文： | 宋丽雯,张新虎,沈慧敏.1.6%瑞香狼毒素水乳剂对4种蔬菜害虫的作用方式比较[J].植物保护,2017,43(1):218-223. |
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| 作者姓名： | 宋丽雯 张新虎 沈慧敏 |
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| 作者单位： | 1. 农业部西北黄土高原作物有害生物综合治理重点实验室，西北农林科技大学植物保护学院，杨凌 712100;2. 宁夏农业技术推广总站,银川,750001;3. 宁夏回族自治区盐池县科学技术局,盐池,751500 |
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| 基金项目： | 宁陕科技合作项目(080807) |
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| 摘 要： | 采用叶片夹毒法、微量点滴法和玻片浸渍法等方法测定了1.6%瑞香狼毒素水乳剂对菜青虫、小菜蛾、豌豆蚜和截形叶螨的杀虫效果。结果表明:处理24h后,在触杀活性试验中,1.6%瑞香狼毒素水乳剂对试虫的毒力大小为菜青虫小菜蛾豌豆蚜截形叶螨;在内吸活性试验中,1.6%瑞香狼毒素水乳剂对截形叶螨和豌豆蚜的LC50分别为149.22mg/L和101.76mg/L,均小于触杀作用下的219.10mg/L和165.25mg/L,表明1.6%瑞香狼毒素水乳剂对豌豆蚜和截形叶螨内吸毒性明显优于触杀作用;在胃毒活性试验中,1.6%瑞香狼毒素水乳剂对菜青虫和小菜蛾的LC50分别为342.82mg/L和407.34mg/L,而触杀作用下的LC50为58.61mg/L和75.30mg/L,表明该药剂对菜青虫和小菜蛾有较强的触杀作用和一定的胃毒作用。
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| 关 键 词： | 甘草 甘草胭珠蚧 土壤处理 灌根 防治效果 |
| 收稿时间： | 2016/1/19 0:00:00 |
| 修稿时间： | 2016/3/4 0:00:00 |
Comparison of different actions of 1.6% daphneantoxin EW on four vegetable pests |
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| Song Liwen,Zhang Xinhu,Shen Huimin.Comparison of different actions of 1.6% daphneantoxin EW on four vegetable pests[J].Plant Protection,2017,43(1):218-223. |
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| Authors: | Song Liwen Zhang Xinhu Shen Huimin |
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| Institution: | 1. Key Laboratory of Integrated Pest Management on Crop in Northwestern Loess Plateau, Ministry of Agriculture, P.R.China; College of Plant Protection, Northwest A & F University, Yangling 712100, China; 2. Agro-Technical Extension Station of Ningxia, Yinchuan 750001, China; 3. Science and Technology Bureau of Yanchi County, Ningxia 751500, China |
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| Abstract: | Porphyrophora sophorae (Arch.) is one of the key pests of cultivated liquorice, Glycyrrhiza uralensis Fisch. The control effect of four insecticides, including imidacloprid 35% SC , thiamethoxam 70% WG, chlorpyrifos 48% EC, and chlorpyrifos 5% GR through root-irrigation or soil treatment against the pest were investigated. The results showed that no control efficacy of any insecticides reached 50%, but the densities of the nymphs reduced in the following spring when the insecticides were applied in mid August. However, the efficacies of imidacloprid 35% SC and thiamethoxam 70% WG by irrigating root were over 80% when they were applied in mid June. Therefore root-irrigation using imidacloprid 35% SC (1 500×) or thiamethoxam 70% WG (7 500×) with a dosage of 300 mL per plant were recommended for the control of P. sophorae in mid June or before. |
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| Keywords: | Glycyrrhiza uralensis Porphyrophora sophorae soil treatment root-irrigation control efficacy |
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