盆栽月季最易感染白粉病,发病原因主要有三点:一是花盆摆放的位置通风不良。二是养花环境处在低温多湿。三是月季植株光照不足。针对发病原因,第一在莳养月季时,要将花盆放在通风良好,光照充足的地方,还要节制浇水,要一次浇透,保持盆土见干见湿。发病时,要及时防治。今 Potted rose most susceptible to powdery mildew, the incidence of the main three points: First, the location of flower pots poorly ventilated. Second, the flowers in the environment at low temperature and humidity. Third, lack of light on the plants rose. For the cause of the disease, the first in the raising of roses, the pot should be placed in a well-ventilated, well-lit place, but also to control the watering, to be doused once, to keep the basin see Gangan see wet. When the disease, to prevent and cure. this