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Winter wheat drought risk early-warning method based on ecotope scale

A technology of risk early warning and ecological zone, which is applied in the direction of forecasting, instrumentation, and data processing applications. It can solve problems such as poor universality, insufficient prediction accuracy of early warning models, and slow data update, achieving strong applicability, increasing applicability, and Realize the effect of real-time correction and verification

Inactive Publication Date: 2015-06-24
山东省农业科学院科技信息工程技术研究中心
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AI Technical Summary

Problems solved by technology

[0005] 1. The prediction accuracy of the existing early warning model is not enough, and it can only realize the macroscopic prediction and forecast of drought, and the universality is poor
[0006] 2. Data updates of existing early warning technologies and methods are slow

Method used

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  • Winter wheat drought risk early-warning method based on ecotope scale
  • Winter wheat drought risk early-warning method based on ecotope scale
  • Winter wheat drought risk early-warning method based on ecotope scale

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with preferred embodiments.

[0029] In this preferred embodiment, taking Shandong as an example, the method for early warning of winter wheat drought risk based on the ecological zone scale is described in detail. The analysis methods for early warning of drought in other areas are the same as those in Shandong, and will not be repeated here.

[0030] According to temperature, light, water, air, and soil factors, different winter wheat ecological types in Shandong are divided. The method of division is common knowledge of those skilled in the art and will not be repeated here.

[0031] 1. Climate drought index (precipitation negative anomaly, that is, the percentage of precipitation anomaly is negative)

[0032] Precipitation anomaly percentage (%) = (total precipitation at the current stage - precipitation climate value) / precipitation climate value * 100%

[0033] 2. The relative meteoro...

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Abstract

The invention discloses a winter wheat drought risk early-warning method based on an ecotope scale. The winter wheat drought risk early-warning method based on the ecotope scale has the benefits that accurate drought prediction and prevention with high applicability can be provided; the drought early-warning method is optimized by ecotope data, so that the applicability of the drought early-warning method and the prediction accuracy are enhanced; and through the ecotope multipoint data analysis, a data base of the drought early-warning method is updated in real time, so that the real-time correction and the verification of the drought early-warning method are achieved to realize the predication and the prevention of winter wheat drought taking an ecotope as a unit scale. Through further combining with remote sensing data, the higher efficiency of the technical scheme can be realized, and meanwhile, the drought prediction and the 3S technology are combined to push the informatization and the digitization of winter wheat production.

Description

technical field [0001] The invention relates to a winter wheat drought risk early warning method, in particular to a winter wheat drought risk early warning method based on an ecological zone scale. Background technique [0002] Drought is one of the main natural disasters that affect my country's agriculture. The annual drought loss in my country accounts for more than 15% of the losses of various natural disasters. The annual grain production due to drought is about 5 billion kg. In the 1950s to 1980s, the grain loss due to drought was about It accounts for 50% of the total grain loss in the country due to disasters. While the drought caused severe economic losses, it also caused a series of secondary resource and environmental problems, such as groundwater funnels and seawater intrusion in coastal areas, due to the substantial attenuation of river runoff during the drought period, and the excessive extraction of groundwater during drought relief, which has a negative impac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/02
Inventor 刘淑云
Owner 山东省农业科学院科技信息工程技术研究中心
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