大豆菟丝子是一年生寄生性恶性杂草,是危害大豆的大敌。多年来,因“鲁保一号”的保存和使用受气候条件的严格限制,防效很差。在每年发生危害季节,只有用人工摘除或连同大豆植株一起拔除,一般连续进行三、五次,仍不能控制危害,减产约10％,严重的达50％以上,个别地块甚至绝收。 Soy dodder is an annual parasitic malignant weeds, is the enemy of endangering soybean. Over the years, because of the preservation and use of “Lu Baoyuan” by the severe climatic conditions, the control effect is very poor. In the annual occurrence of hazardous season, only by artificial removal or together with the removal of soybean plants, the general continuous three or five times, still can not control the harm, cut about 10%, a serious up to 50% or more, even the absolute amount of individual plots.