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Remote sensing monitoring method of sheath blight in field winter wheat at jointing stage

A technology for remote sensing monitoring and sheath blight, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of not being able to represent the incidence of regional sheath blight, and achieve easy cognition and use, large amount of information, and save manpower and resources cost effect

Inactive Publication Date: 2016-11-23
JIANGSU ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many factors affecting the incidence of winter wheat sheath blight. The meteorological data can only represent the meteorological information of a certain station, and the disease index predicted by the fitting relationship between the meteorological information of this station and the disease index cannot represent the disease index. The incidence of sheath blight in the whole county and city

Method used

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  • Remote sensing monitoring method of sheath blight in field winter wheat at jointing stage
  • Remote sensing monitoring method of sheath blight in field winter wheat at jointing stage

Examples

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Effect test

Embodiment 1

[0018] (1) During the growth period of winter wheat in Dafeng City, query and order the environmental satellite remote sensing images (spatial resolution of 30 meters) of Dafeng City until March 21, 2014 (winter wheat jointing stage), and perform geometric correction and atmospheric correction prediction. ready for use after processing;

[0019] (2) The relative humidity of the canopy of the wheat field is obtained by the local agricultural department. The relative humidity of the canopy of the wheat field is added for 5 consecutive days from March 17 to 21 (5 days before the remote sensing satellite passes) and then the average value is calculated. In this example The average value of the relative humidity of the canopy of the wheat field is 58.1%;

[0020] (3) The daily average temperature data of the wheat field is obtained by the local agricultural department. The daily average temperature of the wheat field for 5 consecutive days from March 17 to 21 (5 days before the rem...

Embodiment 2

[0025] (1) During the growth period of winter wheat in Shuyang County, query and order the environmental satellite remote sensing images (spatial resolution of 30 meters) of Shuyang County until April 4, 2014 (winter wheat jointing stage), after geometric correction and atmospheric correction preprocessing stand-by;

[0026] (2) The relative humidity data of the wheat field canopy was obtained by the local agricultural department. The relative humidity of the wheat field canopy was added for 5 consecutive days from March 31 to April 4 (5 days before the remote sensing satellite passed through) and then the average value was calculated. The average value of the relative humidity of the wheat field canopy obtained in this example is 46.6%;

[0027] (3) The daily average temperature data of the wheat field is obtained by the local agricultural department. The daily average temperature of the wheat field for 5 consecutive days from March 31 to April 4 (5 days before the remote sen...

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Abstract

The invention discloses a remote sensing monitoring method for sheath blight of field winter wheat at the jointing stage, and belongs to the technical field of crop growth monitoring. Aiming at the problems existing in previous winter wheat disease monitoring methods, such as long time for forecasting and reporting, large manpower demand, delay of forecasting information, and limited monitoring range, a remote sensing monitoring method for sheath blight in field winter wheat at the jointing stage was proposed, which is a comprehensive utilization of remote sensing vegetation A method for monitoring the occurrence of winter wheat sheath blight in the field using three types of information, including index, wheat field canopy relative humidity and wheat field ambient temperature. Its advantage is that it integrates satellite remote sensing data and climatic factors to monitor winter wheat sheath blight, and can monitor the occurrence of field winter wheat sheath blight at the jointing stage in a large area, non-destructively and quickly, and greatly improves the accuracy of monitoring and timeliness; the remote sensing monitoring information map of winter wheat sheath blight produced has a large amount of information, is intuitive, easy to understand and use, and can provide a reference for the formulation of grassroots agricultural plant protection measures.

Description

technical field [0001] The invention relates to a winter wheat disease monitoring method, in particular to a remote sensing monitoring method for sheath blight of field winter wheat at the jointing stage, and belongs to the technical field of crop growth monitoring. Background technique [0002] Winter wheat sheath blight, also known as winter wheat sharp eye spot, is a soil-borne fungal disease distributed worldwide. one of the factors. The earlier the onset of winter wheat sheath blight, the greater the loss, and in severe cases, it will cause 20% to 40% yield reduction, and even cause dry booting, dry and white ears, and grain failure. The jointing stage of winter wheat is the fastest growing period in the life of winter wheat, and it is also a critical period for the rapid growth of sheath blight and its damage to stems. Doing a good job in the monitoring and forecasting of winter wheat sheath blight at the jointing stage is very important for lodging prevention and yi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25
Inventor 李卫国葛广秀
Owner JIANGSU ACAD OF AGRI SCI
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