根腐病是朱顶红的重要病害,它从根部染病,起初是烂根,然后由根茎扩展至全球,最后枯死。叶片染病后先呈现出红褐色不规则斑点,然后造成干枯或早期黄叶。病菌顺叶流入鳞片缝隙中,使未出球的幼箭染病枯死。外层鳞片发病后很快干枯。怎样防治呢?发现病斑及黄瘦现象后,马上采取药水浇根及喷叶处理,入冬后用药物涂根或浸根治疗。常用药品中,硫磺粉和硫磺胶悬剂为触杀涂抹剂,可直接用原粉 Root rot is a major disease of amaryllis. It attacks from the roots, initially from the rotten roots, then from rhizomes to the world and eventually dies. The leaves showed reddish-brown irregular spots after the disease, and then caused the dry or early yellow leaves. Bacterial cistern flow into the scaly slit, so that the ball did not play young arrows dead. Outer scales quickly dry after onset. How to prevent it? Found lesion and yellow skinny phenomenon, immediately take medicine pouring roots and spray leaves treatment, after the winter coated with drugs or root immersion therapy. Commonly used drugs, sulfur powder and sulfur suspension for contact with the smear, can be used directly to the original powder