Method for establishing rice blade NDVI fitting model for representing rice growing states

A technology for fitting models and growth states, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inability to accurately estimate the growth state of rice

Inactive Publication Date: 2016-07-13
SHENYANG AGRI UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method based on the rice leaf NDVI fitting model to characterize the growth state of rice, which solves the problem that the rice canopy NDVI obtained by remote sensing cannot accurately estimate the growth state of rice in the prior art

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  • Method for establishing rice blade NDVI fitting model for representing rice growing states
  • Method for establishing rice blade NDVI fitting model for representing rice growing states
  • Method for establishing rice blade NDVI fitting model for representing rice growing states

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Embodiment 1

[0089] The following provides a method for constructing a rice leaf NDVI fitting model that characterizes the growth state of rice with the test area being the Northeast region and the test material being Shendao 47 varieties. Specifically, it is implemented in accordance with the following steps:

[0090] Step 1, select several sampling points inside the paddy field, each sampling point is a 0.5m area 2 the circular area of

[0091] Step 2, at the tillering stage, jointing booting stage, heading filling stage and maturity stage, obtain the respective maximum temperature, minimum temperature, maximum relative humidity and minimum relative humidity of the rice bottom, rice middle, rice canopy and rice growth environment every day;

[0092] Step 3, at the tillering stage, jointing booting stage, heading filling stage and maturity stage, obtain rice leaf NDVI every day;

[0093] Step 4, at the tillering stage, jointing booting stage, heading filling stage and maturity stage, obt...

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Abstract

The invention discloses a method for representing rice growing states based on an NDVI model. The method comprises the following steps that the highest temperatures and the lowest temperatures of rice bottoms, rice middles, rice canopies and a rice growing environment are acquired, and the highest relative humidities and the lowest relative humidities of the rice bottoms, the rice middles, the rice canopies and the rice growing environment are acquired; a rice blade NDVI is acquired; a rice canopy NDVI is acquired; the sunshine hours of rice blades and the number of rice growing days are acquired; the data is analyzed through a multivariate regression analysis method of SPSS software so that the NDVI fitting model for representing the rice growing states can be acquired. By means of the method, the growing states of the rice blade tillering stage, the rice blade jointing booting stage, the rice blade head sprouting postulation stage and the rice blade maturation stage can be accurately established, and a basis is established for model study for scientifically assessing the rice health condition.

Description

technical field [0001] The invention belongs to the technical field of crop growth information monitoring, and in particular relates to a method for constructing a rice leaf NDVI fitting model that characterizes the growth state of rice. Background technique [0002] The normalized difference vegetation index (NDVI) can reflect the vegetation growth state and vegetation coverage. As the most important physiological structure in the growth process of rice, rice leaves have an important impact on rice yield. Studying the changes in NDVI of rice leaves and constructing corresponding NDVI models can quickly and accurately judge the growth status of rice leaves, which is of great significance for the identification of early pests and diseases. [0003] In the prior art, the NDVI of the rice canopy can be obtained by means of remote sensing, but the NDVI of the rice leaves cannot be obtained, so the growth state of the rice leaves cannot be accurately estimated, and the growth sta...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 许童羽于丰华陈春玲曹英丽周云成郑伟
Owner SHENYANG AGRI UNIV
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