“沙打旺”俗称地丁,是一种优良的多年生豆科牧草和绿肥作物.适应性强,抗旱耐碱,产量高,固沙而且保土。但是,近年来由于引种中忽视检疫,以及对菟丝子防治不重视,造成菟丝子对沙打旺的危害日趋严重。1983年全县因菟丝子危害损失沙打旺种子1万斤左右,严重影响了沙打旺的产量。一、菟丝子发生为害情况调查椐两年调查,1982年仅是野岗,双塔点片发生;19 “Shatamwang” commonly known as D, is an excellent perennial legumes and green manure crops. Adaptable, drought-resistant alkali, high yield, sand and soil conservation. However, in recent years, due to the neglect of quarantine in introduction and the lack of attention to the prevention and treatment of dodder, the damage caused by dodder is more and more serious. In 1983, the county endangered the loss of sandwiched seed about 10,000 kg, severely affected the output of sand wangwang. First, dodder damage investigation 椐 two years of investigation, in 1982 only Yeung Kong, twin towers point film occurred; 19