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0引言菟丝子俗称黄丝、无根草,是危害多种双子叶植物的一年生恶性杂草,主要危害大豆、苜蓿、沙打旺、三叶草等,也寄生于菊科、藜科等植物。菟丝子的茎缠绕并寄生于寄主植物的地上部分。一株菟丝子向周围蔓延,缠绕寄生成片的寄主植株,直径可达9 m以上。被寄生的植株长势衰弱、矮小,以至不能发育结实,提早成片死亡,造成严重减产乃至绝收。菟丝子不仅危害植物,它还可以引起家畜中毒。中毒后的临床表现为化脓性和出血性胃炎和肠粘膜炎。塔城地区是农业为主,农牧结合的地区,苜蓿是地区提出以“5个一百万亩”基地建设之一。今年来随着农业种植结构的调整,苜蓿的种植区域和种植面积不断扩大,成为一
0 Introduction Dodder, commonly known as yellow silk, rootless grass, is an annual evil endangered many dicotyledonous plants, the main hazards of soybean, alfalfa, sand Wang, clover, also parasitic in Compositae, Chenopodiaceae and other plants. The stem of dodder is entwined and parasitized in the aerial part of the host plant. A dodder spread to the surrounding, winding parasitic patches of host plants, the diameter of up to 9 m or more. Parasitic plants grow weak, short, and can not develop strong, early death, causing serious cuts and even absolute. Dodder is not only harmful to plants, it can also cause livestock poisoning. Post-toxic clinical manifestations of purulent and hemorrhagic gastritis and intestinal mucositis. Tacheng area is dominated by agriculture, agriculture and animal husbandry combined with the area, alfalfa is one of the areas proposed to “5 one million mu” base construction. This year with the adjustment of agricultural planting structure, alfalfa planting area and growing area, becoming a