落葵 ,又名豆腐菜、胭脂菜 ,是一年生缠绕性草本植物 ,由于落葵富含营养成分 ,且低热量、少脂肪 ,经常食用有降血压、益肝、清热凉血、防止便秘等疗效 ,极适宜老年人食用。落葵的主要病害是紫斑病。1　症状主要危害叶片。从幼苗到收获结束均可发病。病斑初期为紫红色水渍状小点 Lakui, also known as tofu dishes, rouge, is an annual winding herb, as Lok Fu is rich in nutrients, and low calorie, less fat, regular consumption of lower blood pressure, liver, heat and cooling to prevent constipation and other effects , Very suitable for the elderly to eat. The main disease of Lakui is purple spot disease. 1 Symptoms Major Harm Leaves. From the seedlings to the harvest can be the onset. Lesions early purple spots water-like dots