承德市北部的丰宁、围场两县年种植马铃薯4万余公顷,年产种薯、商品薯8亿余千克,冬季储薯1.2亿千克左右,是全国四大马铃薯生产基地之一。近年来,由于马铃薯块茎腐烂线虫的危害造成很大储薯损失,1994年造成储薯损失5%～7%,为害严重的薯窖造成损失高达20%～30%。根据目前所检索到 Fengning in the north of Chengde City, paddock in two counties planted more than 40,000 hectares of potato, with an annual output of seed, potato 800 million kilograms, 120 million kilograms of potatoes in winter, is one of the four major potato production base. In recent years, due to the damage caused by potato tuber rotting nematode caused a lot of potato losses, in 1994 caused the loss of 5% to 7% of potato storage, serious damage caused by the loss of as high as 20% to 30%. According to the current retrieved