In the period of nymph stage and ecdysis peak, the control effects was better but it need highly professional technique and not suitable for guiding farmer to control the midges.
在吸期、羽化高峰期防治虽能得较好的防治效果,但需专业技术人员掌握发育进度,不适合指导群防群治;
In the period of nymph stage and ecdysis peak, the control effects was better but it need highly professional technique and not suitable for guiding farmer to control the midges.
在吸期、羽化高峰期防治虽能得较好的防治效果,但需专业技术人员掌握发育进度,不适合指导群防群治;
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