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Fertilization decision method based on crop growth remote sensing monitoring information

A technology for remote sensing monitoring and crops, applied in the agricultural field, can solve problems such as indiscriminate and poor timeliness, and achieve the effects of reducing work intensity, reducing blindness, and improving accuracy

Active Publication Date: 2013-03-20
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problems of weak timeliness and no difference in fertilization decision-making for different fields within the district (level) existing in the current soil testing formula fertilization, especially in soil fertility division (level) formula fertilization work, using satellite remote sensing image data , extract crop growth information in key growth stages, mine remote sensing image pixel-level crop growth difference information, and propose a method for fertilization decision-making based on crop growth remote sensing monitoring information. Fast, accurate, real-time crop fertilization decisions

Method used

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  • Fertilization decision method based on crop growth remote sensing monitoring information
  • Fertilization decision method based on crop growth remote sensing monitoring information
  • Fertilization decision method based on crop growth remote sensing monitoring information

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Embodiment 1

[0059] In this embodiment, Tongzhou and Daxing areas in Beijing are taken as the research areas. By adopting the decision-making method of the present invention, the decision-making information of nitrogen fertilization in the jointing stage of winter wheat in 2008 in Daxing area of ​​Tongzhou area is finally obtained.

[0060] like figure 1 As shown, the specific steps of this embodiment include:

[0061] 1. Classification and extraction of target crops

[0062] In 2008, multiple phases of Landsat TM satellite remote sensing images in the study area were obtained during the growth period of winter wheat. The acquisition dates were March 27 and April 17, respectively, corresponding to the emergence and jointing stages of winter wheat. Using the remote sensing images of March 27 and April 17, 2008, and using the decision tree classification method, the winter wheat planting areas in Daxing District, Tongzhou were extracted, and the figure 2 The distribution map of winter whe...

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Abstract

The invention relates to a fertilization decision method based on crop growth remote sensing monitoring information. The fertilization decision method based on the crop growth remote sensing monitoring information is formed by integration of a traditional formulated fertilization technique based on soil fertility sub-areas (grades), a remote sensing technique and a geographic information system (GIS) technique, according to different land blocks and difference conditions of crop growth in the land blocks, superiority of the remote sensing technique is brought into full play, a real-time, rapid and accurate fertilization decision oriented toward farmland land blocks is achieved, accuracy of the fertilization decision is improved, blindness of the use of chemical fertilizer is reduced, and a foundation for wide-range popularization of a soil testing and formulated fertilization technique is laid.

Description

technical field [0001] The invention belongs to the field of agriculture, and relates to a crop fertilization method, in particular to a fertilization decision-making method based on crop growth remote sensing monitoring information. Background technique [0002] As the "grain" of crops, fertilizers have always played an important role in increasing crop production and farmers' income in my country. In agricultural production, fertilizers contribute more than 40% to crop yield increases. my country attaches great importance to the production and application of chemical fertilizers. Among the current planting inputs, farmers spend about half of the input on fertilizers. At present, it has become the world's largest producer and consumer of chemical fertilizers, accounting for 30% of the world's total consumption. [0003] For a long time, in order to simply increase the yield per unit area and increase the total output of crops, the phenomenon of excessive application of chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/02G06K9/62
Inventor 宋晓宇赵春江杨贵军常红徐新刚龙慧灵李伟国
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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