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卢龙县甘薯种植面积 2.23万 hm~2，占全县农作物种植面积的 53％。由于甘薯连年重茬种植，甘薯茎线虫病发生严重，给农业稳产、高产及农民增收造成很大的影响。经过几年来的积极防治，甘薯茎线虫病得到了很好地遏制，取得了明显的防治效果。其主要防治措施是： 1育苗期把好种薯
Lulong County sweet potato planting area of 22300 hm ~ 2, accounting for 53% of the county’s crop area. Due to continuous cropping sweet potato year after year, sweet potato stalk nematode serious, to agricultural stable yield, high yield and farmer income has a great impact. After several years of active control, sweet potato stem nematode disease has been well contained and achieved significant control effect. The main control measures are: a seedling to good seed