Control effect of herbicide “Langdujing” on Stellera chanaejasme control

Grassland degeneration leads to extensive spread of Stellera chamaejasme which has endangered domestic animals and becoming more and more seriously in recent years. In order to prevent the spreading of S. chamaejasme, the control effects of Herbicide “Langdujing” on S. chamaejasme were evaluated with three concentrations (750, 900, 1050 mL·hm-2) in Black River headwater area in July 2013. The results showed that Langdujing spraying with all three concentrations made S. chamaejasme lost its dominant position and inhibited the height, coverage and above-ground biomass of S. chamaejasme. The yields of monocotyledon forage grass slightly increased although there was no significant difference (P>0.05). The yields of dicotyledon significantly decreased (P<0.05). The concentrations of 1 050 mL·hm-2 had the best controlling efficiency on S. chamaejasme which was 94.92% .