大豆重迎茬减产严重。调查分析其主要原因是重迎茬的病虫害加重、土壤营养失调等。据此,试验提出了减轻重迎茬为害的技术措施。 Soybean replantation seriously heavy cut. The main reason for the investigation and analysis is that the pests and diseases of heavy-stubble crop are aggravated, and the soil nutrition disorders and so on. Based on this, the experiment proposed the technical measures to reduce the heavy-cropping accidents.