Water and fertilizer integrated intelligent irrigation control method suitable for frame type cultivation

Abstract

The invention discloses a water and fertilizer integrated intelligent irrigation control method suitable for frame type cultivation. A multi-layer planting frame part, an irrigation control part and a lifting control part are included, multiple layers of cultivation substrates are arranged on the multi-layer planting frame, argil pipes are arranged in the cultivation substrate layers, and conversion of self potential energy of a liquid storage tank is achieved through the equal lever principle of a pulley device; and an electric push rod device can change the height position of the liquid storage tank only by overcoming system resistance, and a controller controls opening and closing of an electromagnetic valve and lifting of the liquid storage tank according to feedback data of a sensor so as to supply water, fertilizer and nutrients to the argil pipes under positive and negative pressure. Therefore, the water content of the cultivation substrates is always kept in the optimal water content interval required by the growth of vegetables, so that intelligent supply of the water, fertilizer and nutrients required by different types of vegetables in multiple layers and different growth periods of the same vegetable is truly realized.

Description

technical field [0001] The invention relates to the technical field of cultivation irrigation, in particular to a water and fertilizer integrated intelligent irrigation control method suitable for shelf cultivation. Background technique [0002] At present, greenhouse vegetable cultivation mostly adopts irrigation methods such as drip irrigation and sprinkler irrigation. The cost of the drip irrigation device is high, and the capillary dripper will be blocked due to the influence of impurities and mineral precipitation; the uniformity of drip irrigation is not easy to ensure, and it will also cause salt accumulation, and drip irrigation on a cultivation medium with high salt content or When saltwater drip irrigation is used, the salt will accumulate at the edge of the wet zone, causing salt damage. The downside of using sprinkler irrigation to irrigate from above the plants is that the wetted leaves of the vegetables may pose a risk of plant disease, although micro-sprinkle...

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Problems solved by technology

The cost of the drip irrigation device is high, and the capillary dripper will be blocked due to the influence of impurities and mineral precipitation; the uniformity of drip irrigation is not easy to ensure, and it will also cause salt accumulation, and drip irrigation on a cultivation medium with high salt content or When saltwater drip irrigation is used, the salt will accumulate at the edge of the wet zone, causing salt damage

The downside of using sprinkler irrigation to irrigate from above the plants is that the wetted leaves of the vegetables may pose a risk of plant disease, although micro-sprinkler systems that are closer to the ground can deliver water to the base of the plants and reduce the risk of plant disease development, however The number of such micro-sprinkler irrigation systems close to the ground is limited, and it is difficult to achieve uniform irrigation. In addition, except for self-pressure sprinkler irrigation devices, sprinkler irrigation devices require external energy supply

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