杨树自流式打孔注药药液吸收速率影响因素

Influence factors of absorption rate of poplar with auto flowing trunk injection

选用目前市场常用的13种杀虫剂,采取自流式树干打孔注药法,进行不同药剂及浓度对速生杨树体吸收药液产生的影响试验。结果表明:40%氧乐果、30%乙酰甲胺磷、4.5%高效氯氰菊酯、1%甲维盐乳油吸收速率最快,注药后24 h其原液、1∶2浓度液均被树体吸收。40%辛硫磷、48%毒死蜱、5%啶虫脒、40%杀扑磷、3.2%阿维菌素乳油原液吸收速率比1∶2浓度液快,其他药剂原液与1∶2浓度液吸收速率差别不大。

13 kinds of pesticides commonly in the market were selected to analyse the effects of different insecticides and concentrations on the absorption rate of the fast-growing poplar with auto flowing trunk injection. The results showed that the absorption effect of omethoate 40% EC,acephate 30% EC,beta-cypermethrin 4. 5% EC and andemamectin benzoate 1% EC were the best,whose stock solution and 1∶ 2 concentration liquids were all absorbed by trees 24 h after injection. The absorption rate of stock solution of phoxi 40% EC,chlorpyrifos 48% EC,acetamiprid 5% EC,methidathion 40% EC,and abamectin 3. 2% EC were faster than that of the 1∶ 2 concentration liquids,and there was no significant difference between the absorption rate of stock solution and 1∶ 2 concentration liquids of other pesticides.