近几年，本县大豆抱囊线虫病有所蔓延，尤其是高地或遇到干旱的年份发生较重。在1994年，因持续高温干旱此病在我县各地均有发生，影响大豆产量和品质。大豆遭受抱囊线虫危害后，植株明显矮化，叶片变黄，生长瘦弱，与缺氮素或水淹症状相似；病株根系不发达，很少有粗侧根，在 In recent years, the county soybean cyst nematode disease has spread, especially in the heights or in the years of drought occurred heavier. In 1994, the disease occurred in various parts of our county due to the continuous high temperature and drought, affecting soybean yield and quality. Soybean cysts nematode harm, significantly dwarf plants, leaves turn yellow, thin growth, and lack of nitrogen or flooded similar symptoms; diseased roots are underdeveloped, there are few rough lateral roots, in the