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草地螟(Loxostege sticticalis L.)近几年已成为黑龙江省的主要害虫之一,它主要以第一代幼虫为害大豆等作物的叶子造成减产.当前防治草地螟仍以化学防治为主要手段,为了合理地施用农药控制其为害,提高经济效益,压缩不必要的防治面积,研究制订防治指标已成为生产上急待解决的迫切问题;而明确幼虫食量和为害损失率是制订防治指标的前提。为此,我们进行了草地螟幼虫食量测定,田间剪叶模拟试验和接虫试验。从而初步提出草地螟为害大豆的防治指标,供防治时参考。
Grasshopper (Loxostege sticticalis L.) has become one of the major pests in Heilongjiang province in recent years, and it is mainly caused by the first-generation larvae infestation of the leaves of crops such as soybeans.Currently prevention and control of Meadow Borer is still the main means of chemical control, The reasonable application of pesticides to control its damage, improve economic efficiency, reduce unnecessary control area, research and formulation of control indicators has become an urgent problem in the production of urgent solution; and clear larvae food intake and damage loss rate is the prerequisite for the development of control indicators. To this end, we conducted the larvae of grasshopper food intake determination, field leaf cutting simulation and pest test. Thus initially proposed control of Sesamia inferens for soybean damage, for control reference.