Method and device for obtaining crop productivity potential index in county area

Abstract

The embodiment of the invention provides a method and a device for obtaining a crop productivity potential index of a county area. The method comprises the following steps of: acquiring meteorologicalpoint coordinate data of a target county and a plurality of reference counties with the same bisection factors; dividing the numerical range of the coordinate data of each meteorological point into equal-spaced sections according to a plurality of section modes respectively, and obtaining a plurality of section modes are obtained; selecting a segmentation mode d as a target segmentation mode froma plurality of segmentation modes, and obtaining each segmentation interval under the target segmentation mode; obtaining the coordinate data weights of each meteorological point respectively; obtaining reference crop productivity potential indices of each meteorological point coordinate data under each subsection interval respectively; calculating actual crop potential productivity index of eachgrading unit by weighted summation; taking the average value of actual crop potential productivity index as the target crop potential productivity index of the target county. The method for obtainingthe crop productivity potential index of the county region provided by the invention is more objective, accurate and refined.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of grade evaluation of agricultural land, and in particular to a method and device for obtaining a county-level crop production potential index. Background technique [0002] According to the evaluation method of cultivated land quality grading stipulated in the "Agricultural Land Quality Grading Regulations", the crop production potential index is one of the basic parameters of the agricultural land grading work in my country, and it is the climatic condition that affects the growth of crops. The scientific nature of this parameter Accuracy is of great significance to the grade evaluation of cultivated land quality in my country. [0003] At present, the crop production potential index is obtained through a series of corrections based on the meteorological data observed by the meteorological stations in each county, combined with the local farming system and radiation, and a unique ...

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Problems solved by technology

However, in mountainous and hilly areas with complex topography, due to the influence of terrain, precipitation and accumulated temperature have changed greatly, so the use of the only crop production potential index in the county cannot objectively reflect the actual situation in mountainous and hilly areas

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