夏季怎样防治柑桔锈壁虱首先经常巡视果园，发现叶片正反两面有迅速扩展的淡黄色灰状物或园中有个别“黑皮果”出现枝头，或是每片叶上有２—５头锈蜘蛛虫体附着．就必须及时喷药．每７—１０天喷１次，连喷３—５次。目前对柑桔锈壁虱有较好效果的药剂及组合是：６００倍... How to prevent citrus rust tick in summer First, we often visit the orchard and found that both sides of the leaves have rapidly expanding on both sides of the yellowish gray matter or garden, there are individual “black fruit” appear branches, or each leaf 2- 5 rust spider parasitic body attached. It must be timely spraying. Spray every 7-10 days, even spray 3-5 times. The current citrus rust ticks have a better effect of the agents and combinations are: 600 times ...