Citrus huanglongbing morbidity area forecasting method based on meteorological conditions

Abstract

The invention relates to the technical field of crop plant protection, in particular to a citrus liberobacter asiaticum morbidity area forecasting method based on meteorological conditions. According to the technical scheme, the method comprises the following steps: S1, preparing the incidence data of the citrus citrus greening disease: monitoring or searching previous literatures by personnel to obtain the incidence data of the citrus citrus greening disease; s2, meteorological data preparation: preparing meteorological data with the same age limit as the statistical age limit in the S1; s3, establishing a forecasting conceptual model: establishing a regional forecasting conceptual model through various data prepared in S1 and S2; and S4, model analysis: analyzing the regional forecasting conceptual model to generate a regional forecasting analysis model. The established model is simple and practical, parameters are easy to obtain, forecasting is accurate, a disease area can be forecasted in real time, a scientific basis is provided for implementation of field prevention and control measures, and the incidence probability of the Huanglongbing is reduced.

Description

technical field [0001] The invention relates to the technical field of crop plant protection, in particular to a regional forecasting method for the incidence of citrus Huanglongbing based on meteorological conditions. Background technique [0002] Huanglongbing is a non-soil-borne disease. The pathogenic bacteria transmitted by infected psyllids feeding on young leaves are transmitted to the roots through vascular bundles, which damage the roots and cause root rot, which in turn causes the roots to be unable to absorb nutrients and water from the soil, and plant metabolic wastes cannot be removed from the soil. The roots are discharged, resulting in plant sap circulation obstacles, and leaves and fruits are diseased due to lack of nutrients and water. The general incubation period is 6 to 18 months. Under suitable climatic conditions, psyllids can reproduce all year round, and can reproduce for multiple generations in a year. . As a result, psyllids continue to reproduce a...

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Problems solved by technology

Through the comprehensive analysis of a large number of historical documents on the incidence of Huanglongbing, the basic conclusion is that the occurrence of Huanglongbing is closely related to climate or meteorological conditions, both at the regional and field scales. It is difficult to find the quantitative relationship, because many relevant studies are scattered, short-term, descriptive, and rarely provide matching original meteorological data, especially the temperature, humidity, and sunshine hours in meteorological conditions. There are very few cases of establishing quantitative analysis directly with the incidence of indicators such as precipitation and precipitation. Even if the model relationship is established, it has not been verified in a large-scale and long-term series, and there are no cases of practical application.

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