Greenhouse plant leaf air saturation vapor pressure deficit measuring device and measuring method

A technology of water vapor pressure difference and measuring device, which is applied in the direction of measuring device, pressure difference measurement between multiple valves, measuring fluid pressure, etc. problems such as lack of poor acquisition, to achieve the effect of high accuracy, high measurement accuracy, and reliable data support

Active Publication Date: 2013-08-07
BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
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  • Abstract
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Problems solved by technology

[0008] The purpose of the present invention is to solve the technical problems of the lack of targeted equipment for obtaining le...

Method used

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  • Greenhouse plant leaf air saturation vapor pressure deficit measuring device and measuring method
  • Greenhouse plant leaf air saturation vapor pressure deficit measuring device and measuring method
  • Greenhouse plant leaf air saturation vapor pressure deficit measuring device and measuring method

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] Such as figure 1 , figure 2 , image 3 with Figure 4As shown, the greenhouse plant leaf air-saturated water vapor pressure difference measurement device provided by the present invention includes a blade upper surface measurement unit 1 and a blade lower surface measurement unit 2 arranged up and down through a suction part or a clamping part, and the blade upper surface measurement unit 1 includes a first cavity 10 and an air temperature and humidity sensor 8, a first microprocessor 9 and a contact temperature sensor 3 arranged in sequence in the first cavity 10, and the bottom surface of the first cavity 10 is connected to the The position opposite to the conta...

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Abstract

The invention relates to the technical field of agricultural environment measurement, in particular to a greenhouse plant leaf air saturation vapor pressure deficit measuring device and measuring method. The greenhouse plant leaf air saturation vapor pressure deficit measuring device comprises a leaf blade upper surface measuring unit and a leaf blade lower surface measuring unit which are in vertical arrangement through a suction component or a clamping component, wherein the temperature of the leaf blade upper and lower surfaces is measured through a contact type temperature sensor and of the leaf blade upper surface measuring unit and a second temperature sensor of the leaf blade lower surface measuring unit, the temperature of leaf blades is synthetically reflected, the accuracy is high, meanwhile, the temperature and the humidity of air near the leaf blades are accurately measured through an air temperature and humidity sensor, the leaf air saturation vapor pressure deficit is accurately obtained through the calculation of a first microprocessor, the measuring precision is high, and reliable data support is provided for greenhouse environment regulation and control, disease prevention and water stress.

Description

technical field [0001] The invention relates to the technical field of agricultural environment measurement, in particular to a measuring device and method for measuring the air-saturated water vapor pressure difference of greenhouse plant leaves. Background technique [0002] The main purpose of greenhouse environment regulation is to create good light, temperature, water, air, and fertilizer conditions for the growth and development of crops, and to harvest high-quality, high-yield crops within the required period. Among them, the vapor pressure deficit (abbreviation: vpd) obtained according to the temperature and humidity near the leaves of the plant canopy or the greenhouse environment is an important parameter that affects the movement of plant stomata and reflects the current or accumulated crop transpiration water potential. Compared with traditional humidity Parameter control has great significance in humidity regulation, disease prevention, irrigation management and...

Claims

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Application Information

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IPC IPC(8): G01L13/00
Inventor 赵春江张馨郑文刚田宏武梁居宝单飞飞鲍锋
Owner BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
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