大豆田中的菟丝子是恶性寄生杂草,主要寄生于豆科、茄科、菊科等作物或杂草上,对药材、马铃薯及苗圃中的一些作物也可造成危害。在大豆田中危害将其幼茎缠绕于大豆的茎上,常把植株成簇地盘绕起来,受害大豆生长停滞,生育受阻、颜色发黄,植株矮小,极易凋萎,大豆茎上被无数黄色的细藤缠绕着,这些丝茎将吸根伸入豆秆皮内,夺取养分和水分,最终使大豆植株变黄或枯死。田间发生后,由1株缠绕形成 Dodder seeds in soybean fields are vicious parasitic weeds that are mainly parasitic on crops such as leguminous plants, solanaceae, asteraceae and weeds, and can also be harmful to some crops in medicinal herbs, potatoes and nurseries. Harm in the soybean field will be young stems wrapped around the stems of soybeans, often surrounded by clusters of plants around the victim growth of soybean stagnated growth, obstruction, yellow color, short plants, extremely wilting, soybean stalks are numerous yellow The vines entwine, these stems will be rooted into the stalks of straw, to seize nutrients and water, eventually yellowing of the soybean plant or dead. After the field occurred, formed by a wound