近年来山,药以其特有的药用价值和食用价值备,受市场青睐。但随着山药种植面积的不断扩大山,药根结线虫病呈现偏重发生趋势加,上部分农户对山药根结线虫病的发生与危害认识不足防、治不及时从,而严重影响了山药产量和品质。表现症状:山药根结线虫是以幼虫侵入茎块受,害块茎表面 Mountain in recent years, medicine for its unique medicinal value and edible value prepared by the market. However, with the continuous expansion of planting area of ​​yam, root-knot nematode disease tended to be more and more serious. Some farmers did not know enough about the occurrence and damage of yam root-knot nematode disease. And quality. Symptoms: yam root knot nematodes invade stems by larvae, damage tubers surface