Control system and method for insufficient irrigation of crops

A control system and insufficient technology, applied in the direction of control/regulation system, non-electric variable control, botanical equipment and methods, etc., can solve the problem that the accuracy of the device for measuring water surface evaporation is not high enough, and intelligent irrigation forecast and control have not been realized , the small evaporation value of the water surface of the evaporating dish, etc., to achieve the effect of high degree of automation, guaranteed accuracy and simple method

Active Publication Date: 2013-01-16
CHINA AGRI UNIV
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Problems solved by technology

[0006] (1) Existing methods either only measure evaporation, or only carry out irrigation warning, but fail to realize intelligent irrigation forecast and control; Insufficient irrigation; (3...

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  • Control system and method for insufficient irrigation of crops
  • Control system and method for insufficient irrigation of crops
  • Control system and method for insufficient irrigation of crops

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Embodiment Construction

[0045] 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.

[0046] The present invention proposes a method for controlling insufficient irrigation of crops, which can realize forecasting and control of insufficient irrigation, by establishing data including water demand of crops in different regions, different crops and different growth stages, evaporation pan coefficient, and the percentage of water deficit allowed for insufficient irrigation. Database, through the automatic data collection system to collect the data of evaporation and rainfall on the evaporation pan water surface, use the formula to calculate the irrigation start time and irrigation duration, and realize the forecast and control of insufficient irrigation through ...

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Abstract

The invention relates to the technical field of forecast and control in insufficient irrigation of crops and discloses control system and method for insufficient irrigation of crops. A data base including data such as water requirement, pan coefficient and water deficit percentage allowed by insufficient irrigation is established for corps in different areas and different growth phases. Evaporation from water surface of evaporation pans and rainfall are acquired by an automatic data acquisition system. Start time and duration of irrigation are calculated according to a formula. Forecast and control in insufficient irrigation are achieved by a controller system. The control method is applicable to forecasting and controlling insufficient irrigation for field crops in arid and semi-arid areas, gardens and protected agriculture, and is applicable to various irrigation methods of spray irrigation, drip irrigation, basin irrigation and the like. The control system and method are widely applicable. The control method is simple and is low in cost. Precision is guaranteed, and automation level is high.

Description

technical field [0001] The invention relates to the technical field of crop irrigation forecast and control, in particular to a crop irrigation control system and method. Background technique [0002] With the continuous development of economy and society, the contradiction between supply and demand of water resources is becoming more and more prominent. In order to alleviate the contradiction between supply and demand of water resources in our country, agriculture, as a large water user, has great potential for water saving. The utilization rate of irrigation water in our country is low, and the phenomenon of waste is widespread. At present, the average irrigation water utilization coefficient in my country is 0.50, far below the world advanced level of 0.7~0.8. In order to improve the efficiency of irrigation water utilization, in addition to adopting advanced water-saving irrigation projects, it is also necessary to improve the management level of irrigation. Therefore,...

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Application Information

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IPC IPC(8): A01G25/16G05D27/02
CPCY02A40/22
Inventor 王凤新张友良林剑辉康绍忠郭林
Owner CHINA AGRI UNIV
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