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Method for predicting crop yield based on waterlogging stress

A waterlogging stress and crop yield technology, applied in forecasting, data processing applications, instruments, etc., can solve the problems of difficult to characterize the sensitivity difference waterlogging process time influence, crop yield prediction accuracy is not high, and achieve the effect of accurate prediction

Active Publication Date: 2020-05-05
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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Problems solved by technology

[0004] In the process of implementing this application, the inventors found that there are at least the following problems in related technologies: the traditional water production function is difficult to characterize the sensitivity difference of crops to waterlogging responses to different water depths and the time influence of the waterlogging process, resulting in the prediction accuracy of crop yields not tall

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  • Method for predicting crop yield based on waterlogging stress
  • Method for predicting crop yield based on waterlogging stress
  • Method for predicting crop yield based on waterlogging stress

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Embodiment Construction

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0040] The embodiment of the present application provides a method for predicting crop yield based on waterlogging stress, such as figure 1 As shown, the method includes:

[0041] S101. Determine each constant in the water production function of the crop based on actual production data;

[0042] The water production function of crops is an expression describing the mathematical relationship between crop yield and moisture, which is used to determine the optimal irrigation system of crops and predict crop yield.

[0043] In this step, the field water depth and corresponding crop yield of multiple border fields are obtained daily, and the crop yield of each border field and the daily field water depth are substituted into the cons...

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Abstract

The invention discloses a method for predicting crop yield based on waterlogging stress, and relates to the technical field of agricultural production. The method comprises the steps of determining all constants in a moisture production function of crops based on actual production data; calculating an initial waterlogging stress parameter of the crop based on a calculation formula of the initialwaterlogging stress parameter in the moisture production function of the crop and the current field water depth; calculating effective waterlogging stress parameters of the crops based on a calculation formula of the effective waterlogging stress parameters in the moisture production function of the crops and the initial waterlogging stress parameters; and predicting the yield of the crops based on a calculation formula of the relative yield in the moisture production function of the crops and the effective waterlogging stress parameters. The stress influence of waterlogging on crop growth isuniformly represented, so that the prediction precision of the crop yield is improved.

Description

technical field [0001] The present application relates to the technical field of agricultural production, in particular to a method for predicting crop yield based on waterlogging stress. Background technique [0002] Crops can achieve high yield under suitable environmental conditions such as soil moisture and ventilation, and various environmental factors that are unfavorable to the survival and growth of crops are collectively called stress. Environmental stress will reduce crop yield to varying degrees, among which waterlogging stress is the performance that the soil water and air environment cannot meet the growth of crops. Waterlogging disaster is the main form of disaster in my country's agricultural production, and waterlogging alone or in combination severely restricts crop yield. Waterlogging is the accumulation of water in the farmland after the rain, which exceeds the ability of the crops to withstand flooding; while the waterlogging is mainly due to the high gr...

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Application Information

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IPC IPC(8): G06Q50/02G06Q10/04
CPCG06Q50/02G06Q10/04Y02A20/152
Inventor 焦平金关洪林刘路广王方方任贺靖徐景东
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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