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试验结果表明,50%杀螨隆(宝路)WP叶苹果树山楂叶螨和李始叶螨均有较好防效,适宜浓度为2000~2500倍液,持效期达21天以上。
The results showed that 50% of mite mite (Po Road) WP leaves of apple trees hawthorn spider mite and spider mites are better control effect, the appropriate concentration of 2000 to 2500 times the liquid, the holding period of 21 days or more.