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Farmland irrigation water amount calculation method and device

A water quantity calculation and farmland irrigation technology, applied in the field of farmland irrigation, can solve the problem of low accuracy of irrigation water consumption, and achieve the effect of accurate utilization and avoidance of waste.

Inactive Publication Date: 2017-05-31
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method and device for calculating the amount of irrigation water in farmland, which solves the problem of low accuracy of the existing irrigation water amount

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  • Farmland irrigation water amount calculation method and device
  • Farmland irrigation water amount calculation method and device
  • Farmland irrigation water amount calculation method and device

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Embodiment Construction

[0057] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0058] Such as figure 1 As shown, the embodiment of the present invention provides a method for calculating the amount of irrigation water in farmland, comprising the following steps:

[0059] Step 101, obtaining the soil water content of the target irrigation area.

[0060] In this step, the dielectric constant in the soil in the target irrigation area is measured by a time domain reflectometer arranged in the target irrigation area, and the soil moisture content is obtained according to the estimation of the dielectric constant in the soil. In order to obtain the soil moisture content in the target irrigation area more accurately, the probes of the time domain reflectometer can be set in layers in the soil of the target irrigation area, for example, t...

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Abstract

The invention provides a farmland irrigation water amount calculation method and device. The method includes the steps that whether the water content of soil is lower than a preset water content or not is judged; if the water content of soil is lower than the preset water content, the required water amount of a target irrigation area is obtained; the effective precipitation amount of the target irrigation area is obtained; according to the required water amount of the target irrigation area and the effective precipitation amount of the target irrigation area in a time period, the irrigation amount of the target irrigation area is calculated. By means of the method and device, the problem that in the prior art, irrigation water consumption accuracy is low is solved, water requirement conditions of crops in the target irrigation area are quantitatively and periodically reflected, precise utilization of irrigation water is achieved, and unnecessary waste of water resources is avoided.

Description

technical field [0001] The invention relates to the field of farmland irrigation, in particular to a method and device for calculating the amount of farmland irrigation water. Background technique [0002] Affected by global climate change, water resource management issues are becoming increasingly severe around the world. From a global perspective, the report of the International Food and Agriculture Organization pointed out that the world's agricultural water accounts for 69.5% of the total fresh water consumption. [0003] At present, the traditional farmland irrigation water consumption is generally obtained based on the empirical method. The method is as follows: For a certain crop in the irrigation area, the net irrigation water consumption of each irrigation is calculated from the empirical formula according to the irrigation system and irrigation area in a typical year , Gross irrigation water consumption and the irrigation water consumption of the whole irrigation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/02
CPCG06Q50/02
Inventor 肖伟华鲁帆严登华赵勇宋欣熠王浩戴春胜曹波王启东
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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