马齿苋又称马苋、马齿草，是马齿苋科一年生肉质状草本植物，菜药两用。具有提神、清热利湿、滋补、凉血、杀菌防病之功效。白锈病是马齿苋栽培上最主要的病害，一般病叶率３％～３５％，重者６０％～８０％，严重影响商品的外观和食用价值。为此，笔者于１９９９～２００１年? Purslane, also known as horse amaranth, Ma Tusi, is the annual purslane Magnoliaceae herb, vegetable medicine dual use. With refreshing, heat dampness, nourishing, cooling, sterilization and disease prevention effect. White rust is purslane cultivation of the most important diseases, the general sick leaf rate of 3% to 35%, severe cases of 60% to 80%, seriously affecting the appearance and food value of the product. To this end, I in 1999 ~ 2001?