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A Soil Water Fusion Method Based on Bayesian Maximum Entropy

A technology of soil moisture and fusion methods, applied in data processing applications, instruments, calculations, etc., can solve problems such as reliability, uncertainty, different expression methods, and increased irrigation decision-making risks, so as to reduce ambiguity and improve Precision, the effect of eliminating redundancies and contradictions

Active Publication Date: 2021-07-27
FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
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Problems solved by technology

Since the various irrigation information collected by the sensor is different in space, time, and expression, the degree of reliability and uncertainty is different, and the focus and purpose are also different. If it is used without screening, it may increase the risk of irrigation decision-making.

Method used

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  • A Soil Water Fusion Method Based on Bayesian Maximum Entropy
  • A Soil Water Fusion Method Based on Bayesian Maximum Entropy
  • A Soil Water Fusion Method Based on Bayesian Maximum Entropy

Examples

Experimental program
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Effect test

Embodiment 1

[0062] Such as figure 1 As shown, a soil moisture fusion method based on Bayesian maximum entropy includes the following steps:

[0063] S101. During the growth period of winter wheat, use soil drill to collect soil moisture information every 7 days, and obtain soil moisture content by soil extraction and drying method. The sampling depths are 0-20cm, 20cm-40cm, 40cm-60cm, 60cm-80cm, 80cm-100cm.

[0064] S102. Deploy soil moisture sensors using geostatistical analysis methods to monitor changes in soil moisture in real time. The deployment depths are 0-20cm, 20cm-40cm, 40cm-60cm, 60cm-80cm, and 80cm-100cm. The geostatistical analysis method is based on the theory of regionalized variables and uses the variation function as the main tool to study the distribution of soil moisture in space.

[0065] S103, using a Field Spec Handheld ground feature spectrometer (ASD company product, spectral range 350nm-1075nm; resolution 3.5nm, sampling interval 1.6nm, field angle 25°), collec...

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Abstract

The invention relates to a soil moisture fusion method based on Bayesian maximum entropy, which makes full use of the soil moisture obtained by manual soil extraction, the soil moisture (EC-5) monitored in real time by sensors and the soil moisture information retrieved from hyperspectrum, and the application data Fusion technology, which integrates soil moisture data from three different sources to obtain the distribution of soil moisture on a regional scale, eliminates possible redundancy and contradictions between information, and reduces the uncertainty of irrigation decision-making information and decision-making reasoning. The degree of fuzziness improves the accuracy of irrigation decision-making, provides irrigation decision-making opinions and suggestions for the government's drought relief work, and guides water management departments in irrigation areas to make scientific allocation of water resources.

Description

technical field [0001] The invention relates to a soil moisture fusion method based on Bayesian maximum entropy. Background technique [0002] At present, the shortage of water resources has become a worldwide problem, and the safe, efficient and rational use of water resources has become the focus of global attention. [0003] To achieve precision irrigation, fast and accurate information acquisition is the foundation, and timely and scientific irrigation decision-making is the core. In recent years, with the development of refined, intensified, information-based agriculture and digital earth, various high-tech and high-precision sensors have been widely used in the agricultural field, making the information sources for irrigation decisions more extensive and abundant, and irrigation decision-making information forms of expression are more diverse. Because each sensor has its own characteristics, usually a sensor can only reflect the suitability of crop moisture from a ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06Q50/02
CPCG06Q50/02G06F18/217G06F18/251
Inventor 陈智芳王景雷孙景生宋妮
Owner FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
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