夏季时节植物生长旺盛，病虫害也处于高发期，本期园艺热钱，园艺高手张崇炎要介绍一种安全环保的常见除虫剂——除虫菊 ...

A disposable bulb duster or paper cup. But it's the choice of ingredients that's crucial, with dust insecticide laced with ...