Harm, Control and Comprehensive Utilization of Poisonous Weeds in Natural Grasslands of Gansu Province
Area of natural grassland of Gansu province is 15.6483 million hm2,ranked sixth in China.Due to drought,insect pests,overload grazing and other factors,it has degenerated seriously.The poisonous weeds have infested the grassland and spread widely,resulting in a large number of livestock poisoning and serious economic losses for the livestock industry.Common poisonous plants in Gansu natural grassland contains 78 families,187 genera and 312 species.Among them,the Stellera chamaejasme,Oxytropis kansuensis,O.ochrocephala,O.glabra,Astragalus variabilis,Achnatherurn inebrians,Ligularia sibirica,Sophora alopecuroides,Pedicularis resupinata and Quercus are the main poisonous weeds.This paper combined the current available data with own investigation by field research.We summarized the situation about poisonous weeds,such as the damage of grassland ecology and pastoral livestock production,geographical distribution,species,prevention and control measures and reasonable utilization individually.
Poisonous weedsSpeciesDisasterPrevention and controlNatural grasslandsGansu Province
NETL
NSTL
万方数据
维普
