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Development period simulation method based on response and adaptation mechanism of crops to environment

A simulation method and technology of growth period, applied in the field of agriculture, can solve problems that are difficult to apply and do not consider the adaptability of crop development period to climate, etc., and achieve the effect of simple method and improved prediction accuracy

Active Publication Date: 2019-09-17
CHINESE ACAD OF METEOROLOGICAL SCI +1
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  • Application Information

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Problems solved by technology

Existing simulation methods are difficult to apply to scenarios under climate fluctuations because they do not consider the adaptability of crop development to climate
However, the simulation method of crop development period considering the response and adaptation mechanism has not been reported yet.

Method used

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  • Development period simulation method based on response and adaptation mechanism of crops to environment
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  • Development period simulation method based on response and adaptation mechanism of crops to environment

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Embodiment 1

[0055] Such as figure 1 As shown, the invention discloses a method for simulating crop development period considering the response and adaptation mechanism.

[0056] From the observation data of the crop development period of the agricultural meteorological observation station of the China Meteorological Administration in the past 30 years, the stations with more than 15 years of observation of the same variety development period were selected. A total of 10 stations have such data, of which 6 stations observe winter wheat, 1 station observes rice, 2 stations observe maize, and 1 station observes both rice and maize (Tonghua), as shown in Table 1.

[0057] Table 1 Observation stations and observation crops

[0058]

[0059] Since this method uses one method to simulate all developmental stages of all crops, for the sake of simplicity, the specific calculation method will be introduced in detail below by taking the simulation of the Tonghua rice reproductive growth stage (h...

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Abstract

The invention relates to the technical field of agriculture, in particular to a development period simulation method based on a response and adaptation mechanism of crops to the environment. The method comprises the following steps: collecting actually measured crop phenology data of a research site; obtaining the number of days required by the development stage, the initial date sequence of the development stage and the average temperature of the development stage according to the phenological data; obtaining a development rate according to the required number of days of the development stage, wherein the development rate is the reciprocal of the required number of days of the development stage; calculating the value of the average temperature * the starting day sequence; obtaining a regression equation by taking the development rate as a dependent variable and taking the average temperature, the average temperature and an initial day sequence as independent variables through a binary one-time regression method, wherein the equation is a development period simulation formula. According to the method, a mechanism that crops respond to environment changes is considered, and a mechanism that the crops adapt to the environment is also considered, so that the development period can be better simulated compared with an existing model. The method is simple, only three parameters are needed, and the parameters can be directly obtained through observation data.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a growth stage simulation method based on the response and adaptation mechanism of crops to the environment. Background technique [0002] Crop growth simulation is an emerging edge technology, and it is a major development in the study of crop physiology and ecology in recent years. It uses the principle of system analysis and computer simulation technology to quantitatively describe the process of crop growth, development, yield formation and its response to the environment. This growth simulation model is highly comprehensive and integrated of crop physiological and ecological knowledge, and has universal application significance. Successful crop growth models can be widely used to understand, predict and regulate crop growth and yield. [0003] When the crop model predicts the development period, it usually uses the development period simulation method to simulate. V...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/02
CPCG06Q50/02G06F30/20
Inventor 邬定荣于强王培娟霍治国宋艳玲杨建莹
Owner CHINESE ACAD OF METEOROLOGICAL SCI
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