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In agricultural production, fertilizer and water use efficiency has been low. According to the survey, China's agricultural water consumption accounts for about 80% of the total water consumption, and the water utilization rate is only 45%. The reason for this situation is that irrigation technology is backward, and artificial watering for plants is mostly used, which is low efficiency, high cost and serious waste. In this context, the promotion of the technology level of fertigation is essential, therefore, large state agricultural science and technology using computer technology, electronic information technology, automatic control technology, sensor technology and other modern technology to develop the integrated automatic control system of water the system primarily to farmland, garden and agricultural facilities and daily control and management of water, reduce labor cost, Improve automated production efficiency, save water resources, fertilizer, achieve sustainable agricultural development.
The integrated automatic control system of water and fertilizer is composed of cloud platform, water data acquisition terminal, video monitoring, fertilizer application machine, filtration system, valve controller, solenoid valve, field pipeline, etc. The system can set periodic water and fertilizer plan according to the growth state of crops and soil environmental conditions, and implement rotation irrigation. Fertilizer machine according to the prescription set by users, irrigation process parameters automatically control fertilizer concentration, ph, irrigation amount and other indicators, to achieve the correct automatic control of water and fertilizer.
The integrated automatic control system of water and fertilizer combines information technology and agronomic technology to realize agricultural informatization and automatic control and complete the production management function of integrated automatic control of water and fertilizer of crops. According to the crop water requirement rule fertigation, comprehensive management of farmland water and nutrients, with fertilizer with the characteristics of water flow, is conducive to crop absorption, promote fertilizer, fertilizer by water adjust moisture, realize the sewage sludge, comprehensively improve the farmland use efficiency, water water, fertilizer, not only saving energy, saving manpower, also a substantial increase in crop yield and quality, At the same time, the environmental pollution caused by increasing fertilizer application was reduced.
