Irrigation control system suitable for greenhouse single crop
A control system and crop technology, applied in the direction of greenhouse cultivation, application, climate change adaptation, etc., can solve problems such as difficult to achieve water-saving irrigation, achieve good application and promotion prospects, obvious effects, reasonable and feasible design
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Embodiment 1
[0061] Depend on figure 1 As shown, the applicant has designed an irrigation control system suitable for single crops in greenhouses, which includes a control center (100), a Zigbee networking module (200), a detection module (300) and an irrigation module (400);
[0062] The control center (100), the Zigbee networking module (200), and the detection module (300) are connected in sequence;
[0063] The control center (100), the Zigbee networking module (200), and the irrigation module (400) are connected in sequence;
[0064] The control center (100) includes a host computer (110) and a power supply (120);
[0065] The upper computer (110) is electrically connected to the power supply (120).
[0066] The power supply (120) provides power for the matrix moisture sensor (310), the air temperature sensor (320), the light sensor (330), the air humidity sensor (340) and the solenoid valve (410), respectively, and the upper computer (110) and the gateway ( 210) can be directly c...
Embodiment 2
[0079] The applicant utilizes the system described in embodiment 1 to set up a kind of method based on the irrigation control of the irrigation control system of greenhouse single plant crop, and the specific steps of the inventive method are as follows:
[0080] ①Select the type of cultivation substrate and determine the volume ratio of various substrates;
[0081] The selected matrix is vinegar grains, vermiculite and perlite in a volume ratio of 2:1:1.
[0082] ②Using dimensionless analysis method, using different drip irrigation flow rates, different water supply time and different buried depths of the wetting body to establish the characteristic model of the wetting body, and on this basis to establish the profile of the wetting body model and wetted volume model;
[0083] The calculation formula is as follows:
[0084] W = A 1 ( q t ) ...
Embodiment 3
[0146] The application example of embodiment 3 system (taking the automatic irrigation matrix cultivation lettuce as example in the greenhouse)
[0147] This system uses visual studio as the interface program development tool of the upper computer, uses c# language programming under .net, and uses sqlserver as the background database.
[0148] (1) Test material
[0149] The substrate is selected as a composite substrate (vinegar grains: vermiculite: perlite by volume ratio = 2:1:1), and the selected crop is lettuce.
[0150] (2) System control model
[0151] Saturated hydraulic conductivity K S =0.047cm / s, set the drip arrow flow q=0.15L / h, q=0.35L / h, q=0.5L / h; set the initial moisture content of the compound matrix θ=0.18cm 3 cm -3 , θ=0.23cm 3 cm -3 , θ=0.29cm 3 cm -3 ;Set the irrigation time t=5min, t=10min, t=20min, t=30min, t=40min, t=50min and t=60min; set the dripping arrow embedding depth z=3cm; The water content and the experimental data under different drip ...
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