Potato late blight land parcel diagnosis and forecast model establishment method

Abstract

The invention discloses a potato late blight land parcel diagnosis and forecast model establishment method. The method comprises the following steps of (1), determining nearby meteorological station serial numbers through utilization of land parcel coordinates and national standard meteorological station coordinates, and obtaining daily data of history, real-time and coming-week meteorological forecast; (2), taking daily monitoring data of potato late blight of national standard monitoring points as initial data of a region model; (3), employing the monitoring data of the potato late blight determined by a user by the day or at most every other 7 days; (4), employing the monitoring data of the potato late blight of the same class of land parcels in a certain range; (5), combining region model-land class model-land parcel model; and (6), establishing a potato late blight land parcel diagnosis and forecast model. According to the technical scheme provided by the invention, real-time decision-making basis for late blight prevention is provided, and disease loss and pollution to the environment and agricultural products resulting from excessively applying pesticides are reduced.

Description

technical field [0001] The invention belongs to the technical field of diagnosis and forecasting of potato late blight, and in particular relates to a method for establishing a block diagnosis and forecasting model of potato late blight. Background technique [0002] The average annual potato planting area in my country is about 5.4 million ha 2 , ranking first in the world, but the average yield is only 15,400 kg / hm 2 , lower than the world average, one of the important constraints is the damage of potato late blight. The disease is a typical climate epidemic disease caused by Phytophthora infestans, and its infection cycle is about 7-15 days. Potato late blight will spread rapidly under favorable climatic conditions and lead to mass death of potato plants in planting areas. In our country, the output loss is 10%-30% in general epidemic years, and it can reach more than 50% or even extinction in severe epidemic years. At present, the main measures to control potato late...

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Problems solved by technology

[0003] At present, the international potato late blight forecasting model is the Belgian model. The biggest disadvantage of this model is that it uses hourly meteorological data such as temperature and humidity, and it is field meteorological data; Weather monitoring equipment, making it difficult for models to diagnose and forecast by parcel