狼毒净和灭狼毒对青海省草地狼毒的防治效果

Control Effect of“Langdujing”and“Mielangdu”against Grassland Stellera chamaejasme in Qinghai Province

[目的]评估2种药剂对草地狼毒的防除效果。[方法]测定了狼毒净、灭狼毒2种药剂对青海省草地狼毒的防治效果,研究了其对草地经济类群产量、牧草种类、草地昆虫的影响,并测定了2种药剂在土壤和牧草中的残留。[结果]狼毒净、灭狼毒对草地狼毒有明显的防治效果,均达90%以上,且差异不显著。2种药剂均对可食牧草种类有影响,对阔叶牧草当年有影响,翌年牧草种类和产量基本可恢复,对优良牧草的种类基本无影响;当年对常见昆虫种类和数量有一定影响。[结论]狼毒净和灭狼毒均适宜在青海省防除草地狼毒中推广应用。

Abstract [ Objective ] The aim was to evaluate control effects of two kinds of agents against grassland Stellera chamaejasme. [ Method] Control effects of two kinds of agents like ＂Langdujing＂ and ＂Mielangdu＂ against grassland S. chamaejasme were determined. Effects of the two kinds of agents on the yield of grassland economic groups, pasture species and pests were studied, and the residues of the two kinds of agents in soil and grass were determined. [ Result] ＂Langdujing＂ and ＂Mielangdu＂ had obvious control effects against grassland S. chanu^jasme, and the control effects were over 90% ,furthermore there was no significant difference among them. The two kinds of agents ＂had affect on the kind of esculent herbage, had affect on broadleaf herbage in the current year, but the yield and kinds of herbage could recover in the next year. The two kinds of agents had no affect on the kind of fine herbage, but had certain affect on the kind and quantity of pests in the current year. [ Conclusion ] ＂Langdujing＂ and ＂Mielangdu＂ are suitable for popularization and application in Qinghai Province what against grassland SteUera chamaejasme.