亚麻是张家口市坝上地区主要的经济作物。由于亚麻枯萎病为主的亚麻苗期病害,使亚麻产量低而不稳。自农村实行联产承包责任制后,亚麻种植面积逐年扩大,造成重茬种植,致使亚麻苗期病害严重发生。1985年受害面积10.13万hm~2,占播种面积的84.4％,其中绝收0.53万hm~2,减产亚麻籽2160万kg。由于亚麻籽和纤维茎秆的减产,严重影响城乡人民的食油供应以及亚麻为原料的工业生产。为此,从1985年开始在搞清亚麻苗期病害发生规律的基础上,1992年又对亚麻苗期病害的防治进行了试验研究,逐步试验总结出一套亚麻抗病增产技术措施,并实行了推广,使亚麻苗期病害得到控制。产量由原来的20kg/667m~2左右,提高 Flax is Zhangjiakou City Bashang region’s major cash crops. Due to flax wilt-based flax seedling diseases, low and unstable flax yield. Since the implementation of the contract responsibility system in rural areas, flax planting area has expanded each year, resulting in heavy cropping, resulting in serious flax seedling disease. In 1985, the area affected was 101,300 hm 2, accounting for 84.4% of the sown area, of which 53,300 hm 2 were cut off and 21.6 million kg was cut off. Due to the reduced production of flaxseed and fiber stems, the supply of cooking oil to urban and rural people and the industrial production of flax as raw materials have been severely affected. To this end, beginning in 1985 to understand the law of flax seedling disease on the basis of prevention and treatment of flax seedling disease in 1992 conducted a pilot study, and gradually summed up a set of flax disease resistance and yield technology and implementation Promote the flax seedling disease control. Output from the original 20kg / 667m ~ 2 or so, increased