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A method and system for rapid detection of water use efficiency of field wheat

A detection method and utilization rate technology, applied in the direction of color/spectral characteristic measurement, complex mathematical operations, etc., can solve problems such as unclear physiological meaning, complex parameters, and insufficient precision, and achieve good modeling effect, high prediction accuracy, and fast Accurately Predicted Effects

Active Publication Date: 2022-06-21
HENAN AGRICULTURAL UNIVERSITY
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Problems solved by technology

Predecessors have made some progress in using remote sensing data to monitor crop WUE, but the monitoring indicators, methods and models are not consistent due to locations and crop types, and their applicability is also restricted by cultivation conditions. In particular, the crop WUE monitoring model still has parameters Complexity, lack of precision, unclear physiological meaning and other defects

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  • A method and system for rapid detection of water use efficiency of field wheat
  • A method and system for rapid detection of water use efficiency of field wheat
  • A method and system for rapid detection of water use efficiency of field wheat

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Embodiment Construction

[0042]The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] The embodiment of the present invention discloses a rapid detection method for the water utilization rate of field wheat, see figure 1 , including the following steps:

[0044] Step 1. Collect the spectral reflectance of wheat in the area, and extract the field vegetation index NDDA. NDDA has the smallest prediction error and the highest prediction accuracy for leaf water use efficiency.

[0045] Step 2: Select the optimal rem...

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Abstract

The invention discloses a method and system for quickly detecting the moisture utilization rate of wheat in the field, and relates to the technical field of wheat moisture detection. The method includes: step 1, collecting the field vegetation index NDDA in the area; step 2, selecting the optimal remote sensing parameter from the remote sensing parameters , let the optimal remote sensing parameter be OWBI; step 3, combine the above-mentioned vegetation index NDDA and the optimal remote sensing parameter OWBI to obtain the remote sensing combination parameter NDDA / OWBI; step 4, establish the relationship between the remote sensing combination parameter NDDA / OWBI and crop water use efficiency WUE relationship model. The invention makes full use of the physiological advantages of the water use efficiency of leaves to effectively characterize the instantaneous water use status of crops, and realizes the rapid estimation of water use efficiency of field crop groups by using hyperspectral remote sensing measurement technology through the conversion of leaf scales to field population scales.

Description

technical field [0001] The invention relates to the technical field of wheat moisture detection, in particular to a rapid detection method and system for field wheat moisture utilization. Background technique [0002] Wheat is one of the important food crops in my country. In recent years, with economic development and population growth, the level of wheat production is particularly important to ensure world food security. In the context of global climate change, insufficient water has become an important limiting factor for wheat production in many regions. Water Use Efficiency (WUE) characterizes the comprehensive effect of crops on water use, and its value is the main criterion for measuring crop drought tolerance and efficient water use. Breeding and selecting varieties with high water use efficiency is the main factor in crop breeding work. one of the tasks. [0003] Crop water use efficiency (WUE) can be divided into crop field group, individual plant and leaf level...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G06F17/18
CPCG01N21/25G06F17/18
Inventor 冯伟贺利冯子恒温鹏飞刘万代王永华
Owner HENAN AGRICULTURAL UNIVERSITY
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