Room temperature environment control technology based on economic optimum

A technology with optimal economy and control technology, applied in the field of greenhouse environment control, can solve problems such as complex calculation formulas, various data and coefficients, and achieve the effect of improving economic benefits

Inactive Publication Date: 2005-01-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the entire control process is concentrated in the reproductive growth stage of crops (lettuce is in the entire growth stage), and the calculation formula is very complicated, requiring a lot of data and coefficients

Method used

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  • Room temperature environment control technology based on economic optimum
  • Room temperature environment control technology based on economic optimum
  • Room temperature environment control technology based on economic optimum

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Embodiment Construction

[0026] The technical solution and implementation mode of the present invention will be further described below by taking cucumber, one of the main fruits and vegetables grown in the current agricultural facility horticulture, as an example.

[0027] First, measure the crop growth under different environmental factors such as temperature, light, and carbon dioxide concentration, measure the environmental factor parameters achieved by each control mechanism in the greenhouse, and establish a database of environmental factors and crop growth, and a database of control effects .

[0028] Take cucumber as an example, about 40 days after planting, as the vegetative growth stage of cucumber, 40 days later until the end of the harvest period, as its reproductive growth stage.

[0029] Through cultivation experiments, the proportion of dry matter produced by photosynthesis of cucumber planting for 40 to 50 days is 0.018 to 0.427, and the proportion of 50 to 60 days is 0.427 to 0.527. ...

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PUM

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Abstract

A green house environment controlling technique with optimal economic effect features that an optimal control scheme is determined through measuring the growth of crop under some, environmental factors and the environmental factors privoded by temp control system, creating their database and control effect database, calculating the ability to provide the environmental factors and its cost P, calculating the economic yield C of crop, and choosing the maximal C / P value to obtain optimal control scheme.

Description

technical field [0001] The invention relates to the technical fields of agricultural biological environment engineering and protected gardening, in particular to the greenhouse environment control technology aiming at economic optimization. Background technique [0002] One of the main characteristics of modern greenhouse production is that according to the outdoor meteorological conditions and the growth and development stages of crops, environmental control equipment can be used to effectively control the environmental conditions in the greenhouse, and continuous production and management methods can be used to efficiently and balancedly produce various crops. Vegetables, fruits, flowers, herbs, etc. [0003] There are many factors affecting the growth and development of crops in the greenhouse, mainly involving water, nutrients, temperature, light and humidity. In order to obtain the maximum production profit or the economic output of crops, these environmental factors t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/00A01G9/24
CPCY02A40/25
Inventor 毛罕平李萍萍伍德林王纪章顾寄南王鸿翔潘颖
Owner JIANGSU UNIV
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