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采用林间试验,在苹果小吉丁虫幼虫期对受害野苹果树进行不同施药方式和施药浓度的组合处理,探究16%虫线清乳油对野苹果小吉丁虫化学防治效果。试验结果表明,采用打孔注药和输液法施药方式在30 d后校正防效均达到90%以上;采用输液法及施药浓度为1倍稀释时,在整个防治期内校正防效均高于其它处理。对返青率进行比较分析时发现,对于野苹果树生长,最适合的施药浓度为2倍稀释。因此,在虫害防治前期采用1倍稀释浓度、防治后期采用2倍稀释浓度进行施药防治的效果较好。
The intercropping experiment was carried out to study the chemical control effect of 16% insect clear cleansing oil on the apple tree Jixianjimian in the combination of different application modes and application concentration in the apple tree during the larvae stage. The test results show that the perfusion injection and infusion method in 30 d after the correction control effect reached more than 90%; using infusion method and the application concentration of 1-fold dilution, the control during the entire prevention and control were Higher than other treatments. Comparative analysis of the rate of greening found that for the growth of wild apple tree, the most suitable concentration for the two-fold dilution. Therefore, the use of 1-fold dilution in the early stage of pest control, prevention and treatment of the use of 2-fold dilution of the control effect is better.