甘肃天然草原主要毒草分布、危害及其防治对策

甘肃天然草原有毒植物有18科39属178种。对家畜危害性大、分布较广的毒草主要有:豆科棘豆属的甘肃棘豆Oxytropis ransuensis、黄花棘豆O．ochrocephala、小花棘豆O.glabra、糠形棘豆O.falcate、蓝花棘豆O．coerulea,豆科黄芪属的变异黄芪Astragalus variabilis,瑞香科狼毒属的狼毒Sellera chmaejas- me,禾本科芨芨草属的醉马草Achnatherum inebrians、由于自然和人为因素的影响,甘肃省天然草原退化严重,生态环境逐渐变劣,有毒植物大量繁衍增生,家畜采食后,中毒的现象时有发生,造成较大的损失。为此,对毒草的地理分布、生境条件、家畜中毒症状做了简要阐述,提出了防治对策,以减少家畜中毒死亡。

Distribution, harms and control measures of the main poisonous plants in the natural grassland of Gansu province

In the natural grassland of Gansu, there are 18 families 39 genera 178 species poisonous plants. The major poisonous plants which endanger livestock and with relatively wide distribution, are Oxytropis ransuensis. O. ochrocephala. O.glabra.O. falcate. O.coerulea, Astragalus variabilis , Stellera chmaejasme, Achnatherum inebrians. Due to the natural and artificial influence, the natural grassland of Gansu province degenerates greatly, the ecological environment gradually worsens, poisonous and harmful species multiplicates and increases enormously; livestock poisoning happens ocurrently after eating them, resulting in big loss. In accordance with this, the geological distribution, the condition of ecological environment, symptom of livestock poisoning were briefly discussed, the counter-measures were put forward, so as to reduce the death of livestock.