在月季栽培中,最常见的叶部病害就是黑斑病与白粉病了,如防治不及时不得法,病害将削弱植株生长势,降低观赏价值。若想有效控制,一定要了解其发病规律,在发病前采取预防措施,在发病初期及时用药。月季黑斑病和白粉病都是由真菌引起的,但是发病规律差异很大,通过下面的表格, In rose cultivation, the most common leaf disease is black spot disease and powdery mildew, such as control is not lawless, the disease will weaken the plant growth potential, reducing ornamental value. If you want to effectively control, we must understand the incidence of the law, take preventive measures before onset, early onset of timely medication. Rose black spot disease and powdery mildew are caused by fungi, but the incidence of different laws, through the following table,