The invention discloses a mMethod and a system for determining rice meteorological yield

Abstract

The invention provides a method and a system for determining rice meteorological yieldthe meteorological yield of rice. According to the method and the system, main meteorological index information influencing crop growth in an area where a current crop is located is obtained; wherein the data mainly comprises historical data and data of known time in the current year; The method comprises the following steps: predicting rice meteorological index information in the current year through a meteorological index prediction model, predicting meteorological biomass of rice in each growth period in the current year through a meteorological index-meteorological biomass prediction model, and predicting rice meteorological yield in the current year through a meteorological biomass-meteorological yield prediction model. According to the method and the system for determining the meteorological yield of the rice, a meteorological index-meteorological biomass prediction model of the rice in each growth period is established; meteorological biomass prediction of rice in each growth period can be achieved, so that the accuracy of rice meteorological yield prediction is improved, dynamic release ofrice meteorological yield is achieved, and technical support is provided for guaranteeing supply and demand balance of the rice market in ChinaAccording to the method and the system, current-year rice meteorological index information is predicted through a meteorological index prediction model according to main meteorological index information, mainly including historical data and current-year known time data, influencing crop growth in a region where a current crop is located, and then the current-year rice meteorological index information is predicted through a meteorological index-meteorological index-meteorological index prediction model; The meteorological biomass prediction model predicts the meteorological biomass of the rice in each growth period in the current year, and through the meteorological biomass-meteorological biomass-, the meteorological biomass of the rice in each growth period is predicted; And the meteorological yield prediction model predicts the current-year rice meteorological yield. According to the method and the system for determining the meteorological yield of the rice, the meteorological index of the rice in each growth period is established; According to the meteorological biomass prediction model, meteorological biomass prediction of rice in each growth period can be achieved, so that the accuracy of rice meteorological yield prediction is improved, dynamic release of rice meteorological yield is achieved, and technical support is provided for guaranteeing supply and demand balance of the rice market in China.

Description

technical field [0001] The present invention relates to the field of economic crop yield prediction, and more particularly, relates to a method and system for determining the meteorological yield of rice. Background technique [0002] Rice yield is usually divided into biological yield and economic yield. Biomass, referred to as biomass, refers to the total amount of various organic substances produced and accumulated by rice through photosynthesis and absorption, that is, through the transformation of matter and energy, in each growth cycle. Root systems are usually not included in the calculation of biomass. Economic yield refers to the harvested amount of rice grains required for cultivation purposes, which is generally referred to as yield. Usually, the level of economic output is directly proportional to the level of biomass. [0003] The length of the rice growth period is not only mainly determined by the heredity of rice, but also due to factors such as climatic co...

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Problems solved by technology

[0007] In order to solve the technical problem in the prior art that only considers the impact of the climate conditions of the whole growth cycle on the meteorological yield of rice and cannot timely and accurately predict the fluctuation of the meteorological yield of rice under the climatic conditions, the present invention provides a method for determining the meteorological yield of rice. Methods include:

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