淮山药是一种大众化的滋补保健佳蔬。其块茎不仅肉质柔滑、风味鲜美、营养丰富 ,且可菜药兼用 ,加工增值 ;加之耐贮易运 ,市场走俏 ,开发前景广阔。淮山药为高产高效经济作物。但生产上常因重茬连作 ,而遭致短体线虫病 (黑斑病 )的毁灭性危害 ,加之品种退化 ,产量愈种愈低。为 Chinese yam medicine is a popular nourishing health care vegetables. The tubers are not only succulent, delicious, rich in nutrition, but also serve both as a vegetable and as a raw material. Chinese yam for high yield and efficient cash crops. However, the production often due to continuous cropping, which was caused by the short-body nematode disease (black spot disease) devastating damage, coupled with the degradation of varieties, the yield of the more low. for