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防治榆兰金花虫,多采用氧化乐果和呋喃丹两种内吸药物。为探求这两种药物的最佳用药量和药效期,避免防治工作中的盲目性,防止用药量过大,造成药害和不必要的浪费。用药量偏小,达不到防治效果,力求以较小的投资获得最大的防治效果。我们在武邑县李贤兰村榆树方田林网内,用氧化乐果和呋喃丹对榆兰金花虫进行了最佳用药量和药效期试验,现将试验结果分述如下:
Control elm gold flower insects, and more use of omethoate and carbofuran two kinds of absorption drugs. In order to explore the optimal dosage and duration of the two drugs, avoid the blindness in prevention and treatment and prevent excessive dosage, resulting in injury and unnecessary waste. Small amount of medication, reach the effect of prevention and control, and strive to obtain the greatest control effect with a smaller investment. We Wuyi County Li Yin Lancun Yushu Fang Tianlin network, with omethoate and carbofuran on the elm goldenrod the best dose and efficacy of the test, the test results are described below: