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Project located in northwest Shanghai's Jiading District, Shanghai Xu Xing production of green vegetables grown in Horticulture Limited,belong to the northwest of Shanghai, the Yangtze River Delta forefront of the history of agriculture is developed.
¡¡¡¡Irrigation and fertilization consists of two parts : First, irrigation control design,Second, under the conditions dictated by irrigation control irrigation and fertilization.The project is a set of equipment, irrigation and fertilization characteristics and realize the difference object-oriented testing different crops.in the water-saving irrigation, fertilizer and labor savings, and improve the efficiency of agricultural operations.
¡¡¡¡The project is targeted fertilizer irrigation to grow vegetables, shed 72 total, the use of 18 solenoid valve.4 moisture sensor or soil moisture sensors, water sensors were divided into four groups according to irrigation control,The average share of each solenoid valve opened 4-5.Irrigation Control See "Technical Report irrigation control design."specific solenoid valve control is all of the four sub-group sessions irrigation, humidity threshold detection closed-loop control law.Fertilization and irrigation control and simple irrigation, fertilization first to target for the growth of vegetables and the main growing period,in greenhouse vegetable production, it is impossible at the same time to shed a lot of the same agricultural operations, such as transplanting and planting.farming; Second, when the irrigation and fertilization grown too much, too big a fertilized absolutely not a suitable container dissolvedSolution nutrition store, in addition to watching top dressing fertilizer seedlings, only a few color of the object fertilization.Therefore, the control must be oriented in irrigation and fertilization shed for a few differences of medication,The project to a single solenoid valve control object as irrigation and fertilization.Manual selection as a solenoid valve designed for irrigation and fertilization control program. |
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