Method and device for determining irrigation timing and irrigation amount

An irrigation amount and timing technology, applied in the fields of botany equipment and methods, watering devices, gardening, etc., can solve the problems of lack of verification methods, accuracy problems, and inability to represent the actual water content of a large range of soil, and achieve accurate data, The effect of improving accuracy

Active Publication Date: 2018-11-23
张凡
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Problems solved by technology

[0002] In the prior art, there are mainly two decision-making theoretical systems for irrigation: the first is the water loss method based on the water balance equation and evapotranspiration. Evapotranspiration (or called evapotranspiration rate), the irrigation scheme is determined according to the crop evapotranspiration, but the crop evapotranspiration is calculated based on meteorological data, due to the uncertainty of the meteorological data itself, and the obtained crop evapotranspiration has no The uncertainty of crop evapotranspiration will affect the accuracy of the irrigation scheme; the second is the soil moisture method based on the actual measured soil moisture. The essence of this metho...

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  • Method and device for determining irrigation timing and irrigation amount

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[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0018] In an embodiment of the present invention, a method for determining an irrigation scheme is provided, such as figure 1 As shown, the method includes:

[0019] Step 101: According to the meteorological data in the past preset time period of the area to be irrigated (that is, the historical meteorological data in the past period of time) and the meteorological data in the future preset time period (that is, the forecast weather data in the future period of time), calculating crop evapotranspiration for the area to be irrigated (for example, the crop evapotranspiration may be hourly crop e...

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Abstract

The embodiment of the invention provides a determining method and device for the irrigation opportunity and the irrigation volume. The method comprises the steps that crop evapotranspiration of an area to be irrigated is calculated according to meteorological data of the area to be irrigated within a past preset time period and meteorological data within a future preset time period; the actual soil water content of the area to be irrigated is measured continuously, and water consumption of the area to be irrigated is calculated according to the variable quantity of the actual soil water content; the irrigation opportunity and the irrigation volume of the area to be irrigated are determined according to the crop evapotranspiration and the water consumption of the area to be irrigated. According to the method, an evapotranspiration method used for large-range decision making and a soil water method used for small-range decision making are effectively combined together and can be used for making irrigation decisions for large-range open type farmlands, grasslands and forests, and accuracy of irrigation decision making can be improved.

Description

technical field [0001] The invention relates to the technical field of irrigation, in particular to a method and device for determining the timing and amount of irrigation. Background technique [0002] In the prior art, there are mainly two decision-making theoretical systems for irrigation: the first is the water loss method based on the water balance equation and evapotranspiration. Evapotranspiration (or called evapotranspiration rate), the irrigation scheme is determined according to the crop evapotranspiration, but the crop evapotranspiration is calculated based on meteorological data, due to the uncertainty of the meteorological data itself, and the obtained crop evapotranspiration has no The uncertainty of crop evapotranspiration will affect the accuracy of the irrigation scheme; the second is the soil moisture method based on the actual measured soil moisture. The essence of this method is to measure the actual content of the soil by experiment or instrument measure...

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Application Information

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IPC IPC(8): A01G25/00A01G25/16
Inventor 张凡李仰斌郭慧滨姚彬姚寒峰
Owner 张凡
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