红薯是一种公认的抗癌食品,无论是薯块还是近年来兴起的红薯茎尖蔬菜,都已成市场上受欢迎的产品,栽培面积有逐年扩大之势。在栽培中农户大多忽视了苗期病害的防治,使其生长不良,影响产量的形成,现将苗期几种主要病害的症状及防治技术介绍如下:红薯茎线虫病。该病又名糠心病,危害的结果导致大量的薯块内部变黑腐烂,里面都空空无物,有的还生有小白虫,完全失去食用价值。其实该病的危害在苗期已表现出症状,发病薯苗近 Sweet potato is a recognized anti-cancer food, whether it is tuber or the emergence of sweet potato shoothead vegetables in recent years, have become popular products on the market, the cultivation area has expanded year by year. Most farmers in farming neglect the control of seedling disease, poor growth, affecting the formation of yield, now several symptoms of seedling disease and prevention and treatment techniques are as follows: sweet potato stem nematode disease. The disease, also known as chai heart disease, endanger the result of a large number of black potato internal decay, which are empty nothing, and some also have small white worms, completely lost their edible value. In fact, the damage of the disease in the seedling has shown symptoms, the incidence of seedlings near