Portable reference crop total evapotranspiration measuring and issuing system

A quantitative measurement and portable technology, applied in the field of portable reference crop evapotranspiration measurement and release system, can solve the problems of difficult installation and loading, not considering the particularity of accuracy, and short battery working time, so as to reduce equipment costs and improve local Applicability and scientific effect

Inactive Publication Date: 2009-07-15
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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Problems solved by technology

[0003] The above-mentioned lysimeter or analog device has disadvantages such as high cost, difficulty in installing soil, inconvenient movement, and need for regular maintenance. At the same time, due to the precision and sensitivity of related instruments, unintentional disturbance and human trampling around it will cause measurement errors. Error; the calculation method is currently commonly used. In the process of use, special sensors need to be selected, and some formulas have too many measurement parameters (more than 5), etc., resulting in high cost. ...

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  • Portable reference crop total evapotranspiration measuring and issuing system
  • Portable reference crop total evapotranspiration measuring and issuing system
  • Portable reference crop total evapotranspiration measuring and issuing system

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[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] The invention belongs to the field of modern agricultural irrigation, meteorology and scientific research measuring instruments, which can be used to measure environmental parameters such as environmental information, temperature, humidity, light intensity, wind speed and direction, rainfall, soil humidity, etc., and calculate the reference evapotranspiration of crops according to the measurement results, Then obtain the water demand of crops, and release it remotely through Ethernet or communication network, and provide low-cost portable devices and data basis for the formulation of regional crop irrigation system and regional irrigation water consumption, water res...

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Abstract

The invention discloses a portable reference crop evapotranspiration amount measurement distribution system, comprising a sensor group for collecting the reference crop evapotranspiration amount measuring parameters; a collection main machine for processing the reference crop evapotranspiration amount measuring parameters. The accurate measurement of the reference crop evapotranspiration amount measuring parameters can be performed by the less sensors and the device cost is reduced. The system is provided with the remote access and distribution function by an Ethernet and the application of GSM/GPRS, with no geographical restriction and unified management and the data is provides for constituting the area crop irrigation procedure and area irrigation water use, the water resources utilization plan, the irrigation project planning design and management.

Description

technical field [0001] The invention relates to the field of agricultural measurement, in particular to a portable reference crop evapotranspiration measurement release system. Background technique [0002] The current reference crop evapotranspiration (ET 0 ) and the determination of crop water demand, mostly adopt the calculation method of crop reference evapotranspiration, use aerodynamic method, water balance method, lysimeter method, eddy correlation method and remote sensing method to measure and obtain crop reference evapotranspiration, commonly used such as ET 0 . Soil transpiration and evapotranspiration pipe / transpiration and evapotranspiration simulator is based on the principle of soil water balance, which can simulate the transpiration and evapotranspiration of soil and plants in the natural state, monitor the water lost by crops, turf, plants and soil through evaporation, and accurately predict the reasonableness of crops. Irrigation time and required irriga...

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Application Information

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IPC IPC(8): G01N33/00
Inventor 赵春江王成乔晓军张馨侯瑞锋田宏武
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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