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A simulation method of developmental period based on the response and adaptation mechanism of crops to the environment

A simulation method and technology of growth period, applied in the field of agriculture, can solve the problems that the climate adaptability of crop development period is not considered, and it is difficult to apply, so as to achieve the effect of simple method and improved prediction accuracy

Active Publication Date: 2020-09-04
CHINESE ACAD OF METEOROLOGICAL SCI +1
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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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  • A simulation method of developmental period based on the response and adaptation mechanism of crops to the environment
  • A simulation method of developmental period based on the response and adaptation mechanism of crops to the environment
  • A simulation method of developmental period based on the response and adaptation mechanism of crops to the 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 field of agricultural technology, in particular to a growth stage simulation method based on the response and adaptation mechanism of crops to the environment. The method includes: collecting the measured crop phenology data at the research site; obtaining the required days of the development stage, the date sequence of the initial stage of the development stage, and the average temperature of the development stage according to the phenology data; obtaining the growth rate according to the required days of the development stage, and the growth rate is The reciprocal of the number of days required for the stage; calculate the value of the average temperature × initial date sequence; take the growth rate as the dependent variable, take the average temperature, average temperature × initial date sequence as the independent variable, use the binary linear regression method to obtain the regression equation, the The equation is the developmental period simulation formula. The method of the invention not only considers the mechanism of crop response to environmental changes, but also considers the mechanism of crop adaptation to the environment, so it can better simulate the development period than the existing model. And this method is simple, only needs 3 parameters, and the parameters can be obtained directly from the 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 Patents(China)
IPC IPC(8): G06F30/20G06Q50/02
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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