Remote-sensing quick monitoring method of winter wheat powdery mildew in field

A technology for winter wheat and powdery mildew, which is applied in the field of crop growth monitoring, can solve the problems of affecting the accuracy of monitoring and the accurate implementation of control measures, difficulty in obtaining large-scale disease data in a timely manner, and limited sampling scope and sample size. To achieve the effect of easy recognition and use, increase the scope of monitoring, and reduce the workload of investigation

Inactive Publication Date: 2013-05-01
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Problems solved by technology

If there is no timely monitoring and control, once an outbreak occurs, it will often cause a large-scale reduction in winter wheat production, or even extinction in severe cases, resulting in irreparable economic losses. Therefore, the timely monitoring of large-scale winter wheat powdery mildew has always been the focus and focus of academic research. difficulty
[0003] For a long time, the traditional field sampling survey of wheat fields ha

Method used

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  • Remote-sensing quick monitoring method of winter wheat powdery mildew in field

Examples

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Effect test

Embodiment 1

[0017] (1) During the growth period of winter wheat in Xinghua City, query and order the environmental satellite remote sensing images (spatial resolution of 30 meters) of Xinghua City on April 16 (winter wheat flowering period), after preprocessing of geometric correction and atmospheric correction stand-by;

[0018] (2) Synchronized with the satellite transit day, set up 10 ground monitoring points in Xinghua City, each ground monitoring point is located in the center of the winter wheat contiguous planting area greater than 10,000 square meters, and the distance between each ground monitoring point is 3 about kilometers;

[0019] (3) information collection of chlorophyll content of leaves of winter wheat plants at ground monitoring points, collecting 10 points altogether, and then calculating the average value, the average value of chlorophyll content of leaves of winter wheat plants is 32.84% in this example;

[0020] (4) Water content information collection of winter whe...

Embodiment 2

[0025] (1) During the growth period of winter wheat in Shuyang City, query and order the environmental satellite remote sensing images (spatial resolution of 30 meters) of Shuyang City until April 26 (the flowering period of winter wheat), and perform geometric correction and atmospheric correction preprocessing before use ;

[0026] (2) Synchronized with the satellite transit day, set up 10 ground monitoring points in Shuyang City, each ground monitoring point is located in the center of the winter wheat contiguous planting area greater than 10,000 square meters, and the distance between each ground monitoring point is 3 kilometers about;

[0027] (3) information collection of chlorophyll content of leaves of winter wheat plants at ground monitoring points, collecting 10 points altogether, and then calculating the average value, the average value of chlorophyll content of leaves of winter wheat plants is 33.45% in this example;

[0028] (4) Water content information collecti...

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Abstract

The invention discloses a remote-sensing quick monitoring method of winter wheat powdery mildew in a field, and belongs to the technical field of crop growth monitoring. The remote-sensing quick monitoring method of the winter wheat powdery mildew in the field aims at solving the problems that the traditional monitoring method of the winter wheat powdery mildew in the field is high in manpower and time consumption, limited in monitoring range and sample capacity and hysteretic in observing and predicting information. The method uses a remote-sensing vegetation index, a chlorophyll content of winter wheat plant leaves, a moisture content of the leaves and average daily temperature of the wheat field to monitor the occurrence of the winter wheat powdery mildew in the field. The method has the advantages that as the method integrates satellite remote-sensing data, winter wheat growth information and climatic factors to monitor the winter wheat powdery mildew in the field, the occurrence of the large-area winter wheat powdery mildew can be monitored immediately and accurately in a wide range and at lower cost; and a produced remote-sensing monitoring information map for the winter wheat powdery mildew is high in information content, visual, and easy to comprehend and use, and has a high reference for formulating preliminary agricultural management measures.

Description

technical field [0001] The invention relates to a winter wheat disease monitoring method, in particular to a remote sensing rapid monitoring method for field winter wheat powdery mildew, belonging to the technical field of crop growth monitoring. Background technique [0002] Powdery mildew is one of the important diseases of winter wheat in my country. Under the conditions of suitable temperature, relative humidity greater than 70%, and dense growth conditions, the disease often occurs. The disease can invade the aboveground organs of winter wheat plants, especially the leaves and leaf sheaths. Sometimes chaff and awns are also harmed, which is a cross-regional climatic disease with the characteristics of high incidence, wide occurrence range and strong epidemic. If there is no timely monitoring and control, once an outbreak occurs, it will often cause a large-scale reduction in winter wheat production, or even extinction in severe cases, resulting in irreparable economic lo...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01S17/89
Inventor 李卫国庄东英熊世为
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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