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Irrigation decision method and irrigation system for substrate culture crops

A technology of substrate cultivation and decision-making method, which is applied in the field of irrigation system and can solve problems such as the inability to achieve precise water-saving irrigation.

Active Publication Date: 2013-10-02
JIANGSU UNIV
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Problems solved by technology

[0005] In order to solve the technical problem that accurate water-saving irrigation cannot be realized and the automatic irrigation decision-making of the irrigation system can not be realized when the crops are cultivated in the current facility substrate, the invention proposes a new irrigation decision-making method and irrigation system for the substrate cultivation crops

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  • Irrigation decision method and irrigation system for substrate culture crops
  • Irrigation decision method and irrigation system for substrate culture crops

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Embodiment Construction

[0051] The specific implementation manners of the present invention will be further described below in conjunction with the 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.

[0052] The embodiment of the present invention provides a novel irrigation decision-making method for lettuce cultivated with vinegar residue substrate, and the method includes the following four aspects:

[0053] (1) The cultivation substrate used is vinegar grains. Firstly, the main factors affecting the detection accuracy of the soil moisture sensor are determined and the parameters of the soil moisture sensor are corrected. Under the premise of keeping the bulk density constant, tap water was used to prepare 3 samples of vinegar grains with different volumes and water contents, and the moisture sensor was inserted vertically into the samples. A layer of plastic film, no gaps should be left bet...

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Abstract

The invention discloses an irrigation decision method and an irrigation system for substrate culture crops. The method comprises the steps as follows: 1, using calibrated dielectric-type soil moisture sensors to collect substrate moisture data; 2, adopting a dynamic data-driven based numerical simulation method to establish a substrate moisture migration model and a crop root system distribution model; 3, comparing water content of a substrate wet body with a pre-arranged water content of a crop irrigation target, performing irrigation data decision making via the matching degree of a substrate wet body and a crop root zone obtained from the models, and putting forward an irrigation decision of substrate culture crops according to the method. The method and the system provided by the invention can improve dynamic nature and real-time performance of substrate moisture forecast, have the characteristics of water saving and energy saving, have important significance for making a water plan, and is convenient in large-scale popularization and application.

Description

technical field [0001] The invention relates to an irrigation decision-making method and an irrigation system for substrate cultivated crops. Background technique [0002] my country is a large agricultural country, and it is also one of the countries with the most scarce water resources per capita in the world. As a major water user in my country, agriculture accounts for about 65% of the total water resources, and the waste of agricultural water is very serious. At present, the effective utilization coefficient of farmland irrigation water is only 0.5, which is far behind the world's advanced level of 0.7~0.8. The average water use efficiency of crops is 0.87kg / m 3 , compared with Israel 2.32, the difference is 1.45kg / m 3 , it can be seen that my country's agricultural irrigation water saving potential is considerable. Therefore, how to coordinate the contradiction between the demand of agricultural production and the demand of water saving has become an urgent problem t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/06
CPCY02A40/22
Inventor 李萍萍刘志刚王纪章
Owner JIANGSU UNIV
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