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Summer corn yield estimation method based on simulated multispectrum

A summer maize, multispectral technology, applied in the field of summer maize yield estimation based on simulated multispectral

Active Publication Date: 2021-08-17
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of large-scale summer maize yield estimation, and proposes a method for estimating summer maize yield based on simulated multispectral

Method used

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  • Summer corn yield estimation method based on simulated multispectrum
  • Summer corn yield estimation method based on simulated multispectrum
  • Summer corn yield estimation method based on simulated multispectrum

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Embodiment Construction

[0070] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0071] Before describing the specific embodiments of the present invention, in order to make the scheme of the present invention more clear and complete, at first the abbreviations and key term definitions that appear in the present invention are explained:

[0072] PROSAIL model: Canopy radiative transfer model.

[0073] Such as figure 1 Shown, the present invention provides a kind of summer maize yield estimation method based on simulated multi-spectrum, comprises the following steps:

[0074] S1: Determination of chlorophyll, leaf area index, biomass, total nitrogen content and nitrogen nutrition index of summer maize plants in the field test area;

[0075] S2: According to the measured leaf area index of summer maize, construct a leaf area index estimation model considering the growth stage;

[0076] S3: Construct a summer maize plant nitrogen nut...

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Abstract

The invention discloses a summer corn yield estimation method based on simulated multispectrum. The method comprises the following steps: S1, measuring chlorophyll, leaf area index, biomass, total nitrogen content and nitrogen nutrition index of summer corn plants in a field test area; S2, constructing a leaf area index estimation model considering a growth stage; S3, constructing a coupled summer corn plant nitrogen nutrition index estimation model; S4, constructing a relative yield estimation model based on the nitrogen nutrition indexes in the different growth stages; S5, collecting ground actual measurement spectral data of the field test area to obtain summer corn plant canopy simulation multispectral reflectivity; S6, constructing a coupled chlorophyll estimation model; S7, constructing a summer corn plant nitrogen nutrition index estimation model based on simulated multispectral data; and S8, constructing a summer corn yield estimation model based on simulated multispectrums, and performing calculation. According to the method, a summer corn yield prediction model is constructed, the physical significance is clear, and the result is interpretable.

Description

technical field [0001] The invention belongs to the technical field of crop yield estimation, and in particular relates to a summer corn yield estimation method based on simulated multi-spectrum. Background technique [0002] As a large agricultural country, my country's high-quality and high-yield food crops are closely related to the national economy and people's livelihood. Summer maize is one of the grain crops with the largest planting area in North China. Its stable and high yield is of great practical significance to national food security. Therefore, it is very important to accurately estimate the large-scale maize production. In the Statistical Yearbook, corn production is mainly obtained through surveys and statistics, but surveys and statistics are mostly in the form of questionnaires. The accuracy of estimating corn production through surveys and statistics is subject to the professionalism of the investigators and the surveyed personnel, and is greatly affected ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06N3/08G06Q10/04G06Q10/06G01N21/25
CPCG06F30/27G06N3/086G06Q10/04G06Q10/0639G01N21/25Y04S10/50
Inventor 彭致功朱吉祥魏征张宝忠康彤彤王菲宇陈鹤蔡甲冰扈志辉王雅琦谢天慧
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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