推广抗病虫品种，是综合防治作物病虫害的基础，它具有经济有效、简单易行、不污染环境的优点。随着抗源的不断发掘利用和抗病虫机理研究的深入，抗病虫育种已从过去培育单抗品种发展为培育多抗品种，从前期的自然选择、简单杂交过渡到应用聚合杂交、轮回选择、远缘杂交和基因 The promotion of pest-resistant varieties is the basis for integrated prevention and control of crop pests and diseases. It has the advantages of being cost-effective, simple, and non-polluting. With the continuous exploration and utilization of resistance sources and the research on the mechanism of resistance to pests and diseases, the breeding of disease-resistant and insect-resistant pests has developed from cultivating monoclonal antibody varieties in the past to cultivating multiple resistant varieties. From the early natural selection, simple hybridization crosses to hybridization, Selection, distant crosses and genes