| 园林树木种类及树冠大小对自流式注干药剂吸收及传导的影响 |
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投稿时间：2018-04-23
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| 引用本文：张娟,李军,黄俊,等.园林树木种类及树冠大小对自流式注干药剂吸收及传导的影响[J].农药学学报,2018,20(4):529-534. |
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| 基金项目:国家重点研发计划项目（2016YFC1201100，2016YFC1201104）；杭州市农业科研攻关专项（20130432B44）；杭州市萧山区农业重大科技攻关专项（2013203，2015210） |
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| 中文摘要:为探明园林树木种类、树冠大小及药剂种类对自流式注干药剂吸收及传导的影响，将甲氨基阿维菌素苯甲酸盐（简称甲维盐）分别与丁硫克百威、吡虫啉及阿维菌素组合，配制成2.8%甲维盐＋0.3%丁硫克百威（简称3.1% EB）、6%甲维盐＋4%吡虫啉（10% EB）与2%甲维盐＋0.5%阿维菌素（2.5% EB）3种乳油（EC）注干液剂，通过自流式树干注药方式，将3.1% EB和10% EB分别导入香抛树、柳树与栾树体内，研究了不同树种及不同药剂下药液吸收与传导的差异；采用2.5% EB，研究了香抛树树冠直径对药液吸收及传导的影响，同时通过HPLC-UVD检测方法，考察了药剂的残效期。结果表明：树木种类会显著影响注干药剂的吸收，且吸收速率依次为柳树>香抛树>栾树，开始注药5 d后，柳树上的药剂已被全部吸收，而栾树上3.1% EB和10% EB的剩余量分别为66.6%和48.6%；开始注药5 d后，10% EB在香抛树上的吸收率显著高于3.1% EB，两者剩余量分别为12.6%和29.3%，而其他处理则显示药剂种类对其吸收率影响不大；香抛树树冠直径大小对2.5% EB的吸收具有显著影响，冠径越大越利于药剂的吸收；开始注药起第113天，在香抛树枝叶中仍能检测到阿维菌素和甲维盐残留。研究表明，柳树对3.1% EB和10% EB的吸收性能均最佳，且供试药剂种类对其吸收性能影响不大；香抛树冠径大小与其对2.5% EB的吸收呈正相关性，且药剂残效期高达90~120 d。 |
| 中文关键词:树干注药 甲氨基阿维菌素苯甲酸盐 丁硫克百威 吡虫啉 阿维菌素 树冠直径 药剂吸收传导 残留 |
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| Effects of tree species and crown size on the absorption and conduction of insecticides applied by trunk injection |
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| Abstract:The effects of tree species, crown size and insecticides on the absorption and conduction of insecticide applied by trunk injection has been investigated. The 2.8% emamectin benzoate + 0.3% carbosulfan (hereafter 3.1% EB), 6% emamectin benzoate + 4% imidacloprid (10% EB), and 2% emamectin benzoate + 0.5% abamectin (2.5% EB) was made from a mixture of emamectin benzoate with carbosulfan, imidacloprid and abamectin, respectively. The influences of tree species and insecticides (3.1% EB and 10% EB), and crown diameter (2.5% EB) on the absorption conduction of those insecticides in Citrus grandis were studied by flowing trunk injection, meanwhile the residual period of 2.5% EB was investigated by the high performance liquid chromatography (HPLC-UVD) method. The results showed that the absorption rate of insecticides was significantly affected by tree species:Salix babylonica > C. grandis > Koelreuteria paniculata. Moreover, the insecticides were completely absorbed into the trunk within 5 days in S. babylonica. However, the remaining 3.1% EB and 10% EB in K. paniculata were up to 66.6% and 48.6%, respectively. Although the absorption rate of 10% EB (12.6% remaining) in C. grandis was faster than that of 3.1% EB (29.3% remaining) within 5 days, there was no significant difference between these two insecticides in other treatments. The absorption of 2.5% EB was positively related to the crown diameter of C. grandis. On the 113rd day after injection, abamectin and emamectin benzoate were still observed in the branches and leaves. The overall analysis suggested that the best absorption of 3.1% EB or 10% EB was observed in the case with S. babylonica. And there was no significant difference between the absorption of 3.1% EB and that of 10% EB among three tested trees. In addition, the absorption of 2.5% EB was positively related to the crown diameter of C. grandis, and the residual period of 2.5% EB in C. grandis was up to 90-120 days. |
| Key words:trunk injection emamectin benzoate carbosulfan imidacloprid abamectin crown diameter absorption and conduction of insecticide residue |
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