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黄顶菊,一个听起来很美的名字,其实是来自国外的有害植物,被人们称为“生态杀手”。2001年,河北省在衡水湖边首次发现几株黄顶菊,当时并没有引起人们的注意。到2005年底,已经扩散到衡水湖周边,截至目前,河北省邯郸、邢台、衡水、沧州、石家庄、廊坊、保定等7个市的47个县(市、区)以及京、津周边地也区不同程度存在黄顶菊分布,发生面积30多万亩,重为面积5万亩。黄顶菊属外来植物,原产于南美洲,是一种一年生恶性性杂草,高25厘米～170厘米。花冠为鲜黄色,种子为黑色,极
Flatidae, a beautiful name sounds, is actually a harmful plant from abroad, is known as “ecological killer ”. In 2001, Hebei Province first discovered several yellow flavescens beside Hengshui Lake, which did not attract people’s attention at that time. By the end of 2005, it has spread to the periphery of Hengshui Lake. Up till now, 47 counties (cities and districts) in seven cities including Handan, Xingtai, Hengshui, Cangzhou, Shijiazhuang, Langfang and Baoding in Hebei Province, There are different degrees of bumblebee distribution, the occurrence of an area of more than 300000 acres, an area of 50000 acres. Flaveria is a non-native plant, native to South America, is a annual malignant weed, 25 centimeters to 170 centimeters high. Corolla is bright yellow, the seeds are black, very