Abstract:

【OBJECTIVE】Early warning for greenhouse vegetable disease is an essential way for protecting eco-environment and vegetable quality safety. The early warning framework can provide guidance for development of models and systems.【METHOD and RESULTS】The concept of early warning for greenhouse vegetable disease was derived from plant disease epidemiology, and then the “disease early warning system” was evolved from “disease warning system”. The logical course of disease early warning included warning factor establishment, warning indicator monitoring, warning source traceability, warnings situation delivery and warning situation obviation. The establishment of warning factor system could provide reference for disease epidemiological problem analysis and disease early warning models. The framework of early warning for greenhouse vegetable diseases was set up with the basis of classical early warning method, the logical course of new early warning method, and the key techniques of modern early warning method. Taking primary infections of cucumber downy mildew for example, the framework was evaluated preliminarily. 【CONCLUSION】The models and systems based on the framework could provide the decision support for early warning of primary infections of cucumber downy mildew.