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通过田间开放式小区试验研究，明确了小麦穗期多病虫同时危害与产量损失的关系：建立了小麦穗期受麦蚜Ｘ１、白粉病Ｘ２和叶锈病Ｘ３同时危害与产量损失的相关模式。设立了麦蚜Ｘ１、白粉病Ｘ２的经济阈值模型。并提出了稳期病虫的综合防治指标。
Through the open field experiment in the field, the relationship between the simultaneous damage of pests and diseases and the yield loss at the heading stage of wheat was clarified. The correlation models of simultaneous damage and yield loss of wheat aphid X1, powdery mildew X2 and leaf rust X3 at the heading stage were established. The economic threshold model of wheat aphid X1 and powdery mildew X2 was established. And proposed a comprehensive prevention and control indicators of pests and diseases.